EP0353152A1 - Device for withdrawing dug material for making deep trenches - Google Patents

Device for withdrawing dug material for making deep trenches Download PDF

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Publication number
EP0353152A1
EP0353152A1 EP89402126A EP89402126A EP0353152A1 EP 0353152 A1 EP0353152 A1 EP 0353152A1 EP 89402126 A EP89402126 A EP 89402126A EP 89402126 A EP89402126 A EP 89402126A EP 0353152 A1 EP0353152 A1 EP 0353152A1
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EP
European Patent Office
Prior art keywords
section
telescopic tube
pulley
tube
cuttings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89402126A
Other languages
German (de)
French (fr)
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EP0353152B1 (en
Inventor
Karl Bollinger
Philippe Chagnot
Joseph Dietsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soletanche SA
Original Assignee
Soletanche SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soletanche SA filed Critical Soletanche SA
Priority to AT89402126T priority Critical patent/ATE77428T1/en
Publication of EP0353152A1 publication Critical patent/EP0353152A1/en
Application granted granted Critical
Publication of EP0353152B1 publication Critical patent/EP0353152B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means

Definitions

  • the present invention relates to a device for removing cuttings when making trenches or excavation of great depth.
  • a solution consists in interrupting the drilling to lengthen by adding a new element the pipe which is used for the evacuation of the cuttings.
  • This solution has the drawback of requiring work to be interrupted, which constitutes a significant loss of time and money, given the immobilization of very expensive equipment which is necessary for this type of work.
  • the present invention relates to a device which makes it possible to dig trenches or excavations of great depth using a lifting device whose height is only a fraction of the depth of the trench and without it it is necessary to interrupt drilling to modify the structure of the device which allows the removal of cuttings.
  • the subject of the present invention is a device for the evacuation of cuttings resulting from the drilling of a trench or an excavation under mud at a great depth, characterized by the fact that the cuttings evacuation pipe comprises a first lower section arranged in the vicinity of the drilling cutters, which is constituted by a telescopic tube and a second section constituted by a flexible tube connected to the first section by one of its ends and the other end of which terminates in the vicinity of the ground at the point of unloading the spoil , this second section being supported between its two ends by a pulley which is suspended from the upper part of the lifting machine, and the height of which can be modified during work.
  • a blocking device which allows the two elements of the telescopic tube to be joined, in particular in the position where these two elements are inserted into one another.
  • the second flexible section of pipe is supported by a pulley itself suspended from a cable descending from the top of the lifting device which is wound on a winch preferably exerting a constant force .
  • the flexible section of the pipeline automatically adapts to the configuration of the device which varies with the descent of the cutters into the ground.
  • the upper part of the female element of the telescopic tube as well as the upper part of the male element of this tube are held in vertical position by means of guide glasses of which they are integral and which are crossed by a cable which supports the milling machine during its work.
  • the device according to the invention makes it possible for example, using a lifting device which has a total height of approximately 50 meters, to dig excavations the depth of which can reach approximately 140 meters without it being necessary to modify the structure of the device when lowering the cutter into the trench.
  • the device according to the invention can be implemented in different ways.
  • the two elements of the telescopic tube are tucked into each other and are locked on each other so that the telescopic tube does not stretch under the action of the discharge pressure of the cuttings, while the pulley supporting the flexible section is raised to the top of the lifting machine.
  • the pulley is then gradually lowered as the drilling progresses so that the telescopic tube, the two elements of which are tucked into each other, sinks into the ground as the cutter descends and this until the top of the telescopic tube reaches ground level.
  • the cutter can continue to descend, while the two telescopic tube elements gradually move away from each other until their maximum.
  • milling machine 4 which is intended to dig in the ground the trench 5 while being suspended at the top of the crane by one or more cables not shown.
  • the cutters are driven in rotation using electric or hydraulic motors which are supplied from the crane or from a power unit by pipes not shown.
  • the evacuation of drill cuttings mixed with the mud of the trench is carried out according to the invention by a pipe which comprises a first telescopic section 6 constituted by a female element 6 a inside which can slide a male element 6 b which itself constitutes a tube allowing the circulation of cuttings and mud.
  • a blocking device not shown makes it possible to immobilize the element 6b with respect to element 6 a , in particular in the position where these two elements are completely tucked into each other, as seen in FIG. 1.
  • the flexible pipe section 7 is supported by a pulley 8 itself suspended from a cable 9 passing over a pulley 10 at the top of the mast 3 of the crane, so that from the ground, it is possible to move the pulley 8 as desired to raise or lower it relative to the top of the crane.
  • the other end of the cable 9 is connected to a winch which exerts on it a constant force which thus makes it possible automatically to adapt the position of the pulley 8 to the descent of the cutter .
  • the device according to the invention is shown in FIG. 1 in its highest position, the male element 6 b being retracted as far as possible in the female element 6 a of the telescopic section 6, and the pulley 8 being raised in its highest position in relation to the top of the crane.
  • the strawberries are located slightly above the ground.
  • the extent of the descent of the cutter 4 corresponds substantially to twice the height of the lifting machine plus the increase in length of the telescopic section 6 which corresponds to the maximum output of the element 6 b out of element 6 a .
  • FIGS. 2 to 5 show the different phases of using the device according to the invention.
  • FIG. 2 shows the device in its initial position for which the male element 6 b of the telescopic tube is completely retracted into the female element 6 a , the pulley 8 being brought back to the top of the lifting machine.
  • the cutters are located substantially at ground level, and the elements 6 a and 6 b are secured to each other by any device placed at the top of the telescopic tube.
  • the cable 9 which supports the pulley 8 is connected to a winch with constant torque so that the pulley 8 is subjected to a sufficient upward force to maintain the flexible section 7 of the pipeline while being able to follow the downward movement of strawberries which gradually sink into the ground by digging the trench.
  • the male 6 b engages by first stationary element in the trench followed by the lower end of the flexible tube section 7.
  • This device is useful first of all for guiding the male element 6 b when it is lifted from the female element 6 a and on the other hand also for holding the upper part of the female element 6 a in the event where the telescopic tube protrudes substantially above the chassis of the milling machine as is the case in the embodiment shown in Figure 1.
  • FIG. 6 shows the female element 6 a of the female telescopic tube 6 a in which the male element 6 b slides.
  • the upper part of the male element 6 b is connected to the end of the flexible pipe 7.
  • the telescopic tube can rise over a height of several tens of meters above the frame of the milling machine.
  • the flexible tube 7 is liable to be subjected to movements due to the pumping of the cuttings, it is understood that it is preferable to keep the upper part of the telescopic tube in alignment with its lower part.
  • this type of device comprises milling machines of considerable weight and which it is necessary to support using one or more cables which terminate at the top of the lifting machine and which by the traction exerted on them makes it possible to determine the bearing force on the ground of the milling machine.
  • this or these support cables are perfectly vertical and aligned with the milling machine.
  • a second arm 16 is fixed with a screw socket 17 on the upper part of the male element 6 b and is provided with a bezel 18 at the inside of which the cable passes 12.

Abstract

L'invention est relative à un dispositif pour l'evacuation de déblais résultant du forage d'une tranchée ou d'une excavation sous boue, de grande profondeur. La canalisation d'évacuation (6, 7) des déblais comporte une première section (6) disposée au voisinage des fraises de forage (4) qui est constituée par un tube télescopique (6a, 6b) et une seconde section constituée par un tube flexible (7) raccordée à la première section par une de ses extrémités et dont l'autre extrémité aboutit au voisinage du sol au point de déchargement des déblais, cette seconde section (7) étant supportée entre ses deux extrémités par une poulie (8) qui est suspendue à la partie supérieure de l'engin de levage (1) et dont la hauteur peut être modifiée en cours de travail.The invention relates to a device for the evacuation of cuttings resulting from the drilling of a trench or excavation under mud, of great depth. The cuttings evacuation pipe (6, 7) has a first section (6) arranged in the vicinity of the drill cutters (4) which is constituted by a telescopic tube (6a, 6b) and a second section constituted by a flexible tube (7) connected to the first section by one of its ends and the other end of which ends in the vicinity of the ground at the point of unloading of the spoil, this second section (7) being supported between its two ends by a pulley (8) which is suspended from the upper part of the lifting device (1) and the height of which can be changed during work.

Description

La présente invention est relative à un dispositif d'évacuation des déblais lors de la réalisation de tranchées ou d'excavation de grande profondeur.The present invention relates to a device for removing cuttings when making trenches or excavation of great depth.

Il est déjà connu de réaliser des tranchées ou des excavations à l'aide de fraises qui sont entraînées en rotation par des moyens hydrauliques ou électriques pour désagréger le terrain en agissant au fond de la tranchée en cours de forage, laquelle est remplie de boue de manière à assurer le maintien de ses parois.It is already known to make trenches or excavations using cutters which are rotated by hydraulic or electric means to disaggregate the ground by acting at the bottom of the trench during drilling, which is filled with mud from so as to maintain its walls.

Il est également connu d'évacuer les déblais par canalisation qui les remonte jusqu'en haut de la tranchée en les transportant à l'aide d'une pompe alors qu'ils sont mélangés à la boue qui garnit la tranchée.It is also known to evacuate the cuttings by pipeline which goes up to the top of the trench by transporting them using a pump while they are mixed with the mud which fills the trench.

On réalise actuellement de telles tranchées ou excavations qui vont jusqu'à des profondeurs de 100 à 200 mètres, ce qui soulève des difficultés importantes en ce qui concerne la canalisation par laquelle le mélange de déblais et de boue est évacué.Currently such trenches or excavations are carried out which go to depths of 100 to 200 meters, which raises significant difficulties with regard to the pipe through which the mixture of spoil and mud is discharged.

Comme il n'est pas possible d'utiliser des engins de levage d'une hauteur trop importante, une solution consiste à interrompre le forage pour allonger par l'adjonction d'un élément nouveau la canalisation qui sert à l'évacuation des déblais. Cette solution présente l'inconvénient d'obliger à interrompre le travail, ce qui constitue une perte de temps et d'argent importante compte tenu de l'immobilisation du matériel très coûteux qui est nécessaire pour ce genre de travaux.As it is not possible to use lifting devices of too great a height, a solution consists in interrupting the drilling to lengthen by adding a new element the pipe which is used for the evacuation of the cuttings. This solution has the drawback of requiring work to be interrupted, which constitutes a significant loss of time and money, given the immobilization of very expensive equipment which is necessary for this type of work.

La présente invention est relative à un dispositif qui permet de creuser des tranchées ou des excavations de grande profondeur à l'aide d'un engin de levage dont la hauteur ne présente qu'une fraction de la profondeur de la tranchée et sans qu'il soit nécessaire d'interrompre le forage pour modifier la structure du dispositif qui permet l'évacuation des déblais.The present invention relates to a device which makes it possible to dig trenches or excavations of great depth using a lifting device whose height is only a fraction of the depth of the trench and without it it is necessary to interrupt drilling to modify the structure of the device which allows the removal of cuttings.

La présente invention a pour objet un dispositif pour l'évacuation de déblais résultant du forage d'une tranchée ou d'une excavation sous boue à grande profondeur, caractérisé par le fait que la canalisation d'évacuation des déblais comporte une première section inférieure disposée au voisinage des fraises de forage, qui est constituée par un tube télescopique et une seconde section constituée par un tube flexible raccordé à la première section par une de ses extrémités et dont l'autre extrémité aboutit au voisinage du sol au point de déchargement des déblais, cette seconde section étant supportée entre ses deux extrémités par une poulie qui est suspendue à la partie supérieure de l'engin de levage, et dont la hauteur peut être modifiée en cours de travail.The subject of the present invention is a device for the evacuation of cuttings resulting from the drilling of a trench or an excavation under mud at a great depth, characterized by the fact that the cuttings evacuation pipe comprises a first lower section arranged in the vicinity of the drilling cutters, which is constituted by a telescopic tube and a second section constituted by a flexible tube connected to the first section by one of its ends and the other end of which terminates in the vicinity of the ground at the point of unloading the spoil , this second section being supported between its two ends by a pulley which is suspended from the upper part of the lifting machine, and the height of which can be modified during work.

Selon un mode de réalisation préféré de l'invention, il est avantageux de prévoir un dispositif de blocage qui permet de solidariser les deux éléments du tube télescopique, notamment dans la position où ces deux éléments sont rentrés l'un dans l'autre.According to a preferred embodiment of the invention, it is advantageous to provide a blocking device which allows the two elements of the telescopic tube to be joined, in particular in the position where these two elements are inserted into one another.

Selon un mode de réalisation préféré de l'invention, la seconde section flexible de canalisation est supportée par une poulie elle-même suspendue à un câble descendant du haut de l'engin de levage qui est enroulé sur un treuil exerçant de préférence une force constante.According to a preferred embodiment of the invention, the second flexible section of pipe is supported by a pulley itself suspended from a cable descending from the top of the lifting device which is wound on a winch preferably exerting a constant force .

De cette manière, la section flexible de la canalisation s'adapte automatiquement à la configuration du dispositif qui varie avec la descente des fraises dans le sol.In this way, the flexible section of the pipeline automatically adapts to the configuration of the device which varies with the descent of the cutters into the ground.

Selon un mode de réalisation préféré, la partie supérieure de l'élément femelle du tube télescopique ainsi que la partie supérieure de l'élément mâle de ce tube sont maintenus en position verticale grâce à des lunettes de guidage dont ils sont solidaires et qui sont traversées par un câble qui supporte l'engin de fraisage lors de son travail.According to a preferred embodiment, the upper part of the female element of the telescopic tube as well as the upper part of the male element of this tube are held in vertical position by means of guide glasses of which they are integral and which are crossed by a cable which supports the milling machine during its work.

Le dispositif selon l'invention permet par exemple, à l'aide d'un engin de levage qui a une hauteur totale d'environ 50 mètres, de creuser des excavations dont la profondeur peut atteindre environ 140 mètres sans qu'il soit nécessaire de modifier la structure du dispositif lors de la descente de la fraise dans la tranchée.The device according to the invention makes it possible for example, using a lifting device which has a total height of approximately 50 meters, to dig excavations the depth of which can reach approximately 140 meters without it being necessary to modify the structure of the device when lowering the cutter into the trench.

Le dispositif selon l'invention peut être mis en oeuvre de différentes manières.The device according to the invention can be implemented in different ways.

Dans tous les cas, au moment du début du forage, les deux éléments du tube télescopique sont rentrés l'un dans l'autre et sont bloqués l'un sur l'autre de manière à ce que le tube télescopique ne s'allonge pas sous l'action de la pression de refoulement des déblais, tandis que la poulie supportant la section flexible est remontée en haut de l'engin de levage.In all cases, when drilling begins, the two elements of the telescopic tube are tucked into each other and are locked on each other so that the telescopic tube does not stretch under the action of the discharge pressure of the cuttings, while the pulley supporting the flexible section is raised to the top of the lifting machine.

Selon un premier mode d'utilisation, la poulie est ensuite descendue progressivement au fur et à mesure du forage de manière à ce que le tube télescopique, dont les deux élément sont rentrés l'un dans l'autre, s'enfonce dans le sol au fur et à mesure de la descente de la fraise et ceci jusqu'au moment où la partie haute du tube télescopique arrive au niveau du sol.According to a first mode of use, the pulley is then gradually lowered as the drilling progresses so that the telescopic tube, the two elements of which are tucked into each other, sinks into the ground as the cutter descends and this until the top of the telescopic tube reaches ground level.

Après déverrouillage des deux éléments télescopiques et fixation du haut de l'élément mâle à la surface du sol, la fraise peut continuer à descendre, tandis que les deux éléments de tube télescopique s'écartent l'un de l'autre progressivement jusqu'à leur maximum.After unlocking the two telescopic elements and fixing the top of the male element to the ground surface, the cutter can continue to descend, while the two telescopic tube elements gradually move away from each other until their maximum.

Il suffit ensuite de libérer l'élément mâle de sa fixation à la surface du sol et de laisser descendre progressivement la poulie qui supporte la section flexible de la canalisation jusqu'au voisinage du sol pour que l'on puisse atteindre la profondeur maximale de l'excavation.It then suffices to release the male element from its attachment to the ground surface and to allow the pulley which gradually supports the flexible section of the pipeline to descend to the vicinity of the ground so that the maximum depth of l can be reached. 'excavation.

Selon un autre mode d'utilisation, en partant de la position initiale, il est possible de commencer le forage en abaissant la poulie et en laissant les deux éléments du tube télescopique emboîtés l'un dans l'autre, puis, lorsque la profondeur la plus grande que l'on peut atteindre dans cette configuration est obtenue, il suffit de remonter la fraise pour déverrouiller les deux éléments du tube télescopique et de les amener en position écartée, ce qui permet de creuser la tranchée jusqu'à sa profondeur maximale.According to another mode of use, starting from the initial position, it is possible to start drilling by lowering the pulley and leaving the two elements of the telescopic tube fitted one inside the other, then, when the depth la larger than can be achieved in this configuration is obtained, it suffices to raise the cutter to unlock the two elements of the telescopic tube and bring them in the separated position, which allows to dig the trench to its maximum depth.

Dans le but de mieux faire comprendre l'invention, on va en décrire maintenant et sans aucun caractère limitatif un mode de réalisation pris comme exemple et représenté sur le dessin.In order to better understand the invention, we will now describe and without any limiting character an embodiment taken as an example and shown in the drawing.

Sur ce dessin ;

  • - la figure 1 représente une vue schématique en élévation d'un dispositif selon l'invention,
  • - les figures 2 à 5 représentent des vues schématiques à plus petite échelle du dispositif selon la figure 1 dans des configurations correspondant aux diverses phases de son fonctionnement.
  • - et la figure 6 est une vue schématique d'un dispositif de maintien de la partie haute du tube télescopique.
On this drawing ;
  • FIG. 1 represents a schematic elevation view of a device according to the invention,
  • - Figures 2 to 5 show schematic views on a smaller scale of the device according to Figure 1 in configurations corresponding to the various phases of its operation.
  • - And Figure 6 is a schematic view of a device for holding the upper part of the telescopic tube.

On voit sur la figure 1, la grue 1 montée sur chenilles 2 dont le mât 3 de type conventionnel s'élève à une hauteur importante qui peut être par exemple de quelques dizaines de mètres.We see in Figure 1, the crane 1 mounted on tracks 2 whose mast 3 of conventional type rises to a significant height which can be for example a few tens of meters.

On voit également l'engin de fraisage 4 schématiquement représentée qui est destinée à creuser dans le sol la tranchée 5 en étant suspendue en haut de la grue par un ou plusieurs câbles non représentés.We also see the milling machine 4 schematically shown which is intended to dig in the ground the trench 5 while being suspended at the top of the crane by one or more cables not shown.

Les fraises sont entraînées en rotation à l'aide de moteurs électriques ou hydrauliques qui sont alimentés à partir de la grue ou d'une unité de puissance par des canalisations non représentées.The cutters are driven in rotation using electric or hydraulic motors which are supplied from the crane or from a power unit by pipes not shown.

Conformément à l'invention, l'évacuation des déblais de forage mélangés à la boue de la tranchée, s'effectue selon l'invention par une canalisation qui comporte une première section 6 télescopique constituée par un élément femelle 6a à l'intérieur duquel peut coulisser un élément mâle 6b qui constitue lui-même un tube permettant la circulation des déblais et de la boue.According to the invention, the evacuation of drill cuttings mixed with the mud of the trench, is carried out according to the invention by a pipe which comprises a first telescopic section 6 constituted by a female element 6 a inside which can slide a male element 6 b which itself constitutes a tube allowing the circulation of cuttings and mud.

Conformément à un mode de réalisation préféré de l'invention, un dispositif de blocage non représenté permet d'immobiliser l'élément 6b par rapport à l'élément 6a, en particulier dans la position où ces deux éléments sont complétement rentrés l'un dans l'autre, comme vue sur la figure 1.In accordance with a preferred embodiment of the invention, a blocking device not shown makes it possible to immobilize the element 6b with respect to element 6 a , in particular in the position where these two elements are completely tucked into each other, as seen in FIG. 1.

On voit également sur la figure 1 la seconde section 7 de canalisation flexible dont une extrémité 7a est reliée à l'extrémité de l'élément 6b et dont l'autre extrémité 7b aboutit au voisinage du sol à la canalisation de décharge du remblai dans un endroit approprié avec séparation et récupération éventuelle de la boue.We also see in Figure 1 the second section 7 of flexible pipe whose one end 7 a is connected to the end of the element 6 b and whose other end 7 b ends in the vicinity of the ground to the discharge pipe of the backfill in a suitable place with separation and possible recovery of the mud.

Conformément à l'invention, la section de canalisation flexible 7 est supportée par une poulie 8 elle-même suspendue à un câble 9 passant sur une poulie 10 au sommet du mât 3 de la grue, de telle sorte qu'à partir du sol, il est possible de déplacer à volonté la poulie 8 pour la faire monter ou descendre par rapport au sommet de la grue.According to the invention, the flexible pipe section 7 is supported by a pulley 8 itself suspended from a cable 9 passing over a pulley 10 at the top of the mast 3 of the crane, so that from the ground, it is possible to move the pulley 8 as desired to raise or lower it relative to the top of the crane.

Selon un mode de réalisation préféré de l'invention, l'autre extrémité du câble 9 est reliée à un treuil qui exerce sur lui une force constante ce qui permet ainsi d'adapter automatiquement la position de la poulie 8 à la descente de la fraise.According to a preferred embodiment of the invention, the other end of the cable 9 is connected to a winch which exerts on it a constant force which thus makes it possible automatically to adapt the position of the pulley 8 to the descent of the cutter .

Le dispositif selon l'invention est représenté sur la figure 1 dans sa position la plus haute, l'élément mâle 6b étant rentré au maximum dans l'élément femelle 6a de la section télescopique 6, et la poulie 8 étant remontée dans sa position la plus haute par rapport au sommet de la grue.The device according to the invention is shown in FIG. 1 in its highest position, the male element 6 b being retracted as far as possible in the female element 6 a of the telescopic section 6, and the pulley 8 being raised in its highest position in relation to the top of the crane.

Dans cette configuration, les fraises sont situées légèrement au-dessus du sol.In this configuration, the strawberries are located slightly above the ground.

On comprend que, grâce à l'invention, on peut à partir de cette position assurer la continuité de l'évacuation des déblais lors de la descente de l'engin de fraisage 4, soit par descente de la poulie 8, soit par déplacement de l'élément 6b par rapport à l'élément 6aen provoquant l'extension de la section de tube télescopique 6, soit par utilisation combinée de ces deux mouvements.It is understood that, thanks to the invention, it is possible from this position to ensure the continuity of the evacuation of the cuttings during the descent of the milling machine 4, either by descent of the pulley 8, or by displacement of the element 6 b relative to the element 6 a by causing the extension of the telescopic tube section 6, either by combined use of these two movements.

On comprend également que l'importance de la descente de la fraise 4 correspond sensiblement à deux fois la hauteur de l'engin de levage plus l'accroissement de longueur de la section télescopique 6 qui correspond à la sortie maximale de l'élément 6b hors de l'élément 6a.It is also understood that the extent of the descent of the cutter 4 corresponds substantially to twice the height of the lifting machine plus the increase in length of the telescopic section 6 which corresponds to the maximum output of the element 6 b out of element 6 a .

C'est ainsi qu'avec une grue dont le sommet de la flèche se situe à environ 30 mètres du sol et avec une section télescopique qui, a l'état rentré, a une longueur d environ 30 m, il est possible de réaliser des excavations de plus de 90 m de profondeur.Thus with a crane whose top of the boom is located about 30 meters from the ground and with a telescopic section which, in the retracted state, has a length of about 30 m, it is possible to carry out excavations over 90 m deep.

On a représenté sur les figures 2 à 5 les différentes phases d'une utilisation du dispositif selon l'invention.FIGS. 2 to 5 show the different phases of using the device according to the invention.

La figure 2 représente le dispositif dans sa position initiale pour laquelle l'élément mâle 6b du tube télescopique est complètement rentré dans l'élément femelle 6a, la poulie 8 étant ramenée sur le haut de l'engin de levage.FIG. 2 shows the device in its initial position for which the male element 6 b of the telescopic tube is completely retracted into the female element 6 a , the pulley 8 being brought back to the top of the lifting machine.

Dans cette position, les fraises sont situées sensiblement au niveau du sol, et les éléments 6a et 6b sont assujettis l'un à l'autre par un dispositif quelconque placé à la partie supérieure du tube télescopique.In this position, the cutters are located substantially at ground level, and the elements 6 a and 6 b are secured to each other by any device placed at the top of the telescopic tube.

Dans le mode de réalisation décrit, le câble 9 qui supporte la poulie 8 est relié à un treuil à couple constant de sorte que la poulie 8 est soumise à une force ascensionnelle suffisante pour maintenir la section flexible 7 de la canalisation tout en pouvant suivre le mouvement de descente des fraises qui s'enfoncent progressivement dans le sol en creusant la tranchée.In the embodiment described, the cable 9 which supports the pulley 8 is connected to a winch with constant torque so that the pulley 8 is subjected to a sufficient upward force to maintain the flexible section 7 of the pipeline while being able to follow the downward movement of strawberries which gradually sink into the ground by digging the trench.

On arrive ainsi à la phase représentée sur la figure 3 dans laquelle la partie supérieure du tube télescopique est située au voisinage de la surface du sol.We thus arrive at the phase represented in FIG. 3 in which the upper part of the telescopic tube is located in the vicinity of the ground surface.

On procède alors à la désolidarisation des éléments 6a et 6b du tube télescopique et sous l'action du câble 9, la poulie 8 est ramenée vers le haut jusqu'à ce que l'élément mâle 6b du tube télescopique soit totalement extrait de l'élément femelle 6a. En continuant à creuser à l'aide des fraises, l'ensemble s'enfonce progressivement dans le sol comme représenté sur la figure 4.We then proceed to the separation of the elements 6 a and 6 b of the telescopic tube and under the action of the cable 9, the pulley 8 is brought up until the male element 6 b of the telescopic tube is completely extracted of the female element 6 a . By continuing to dig using the strawberries, the assembly gradually sinks into the ground as shown in Figure 4.

L'élément mâle 6b s'engage tout d'abord en entier dans la tranchée en étant suivi par l'extrémité inférieure de la section de tube flexible 7.The male 6 b engages by first stationary element in the trench followed by the lower end of the flexible tube section 7.

On arrive ainsi à la phase représentée sur la figure 5 qui correspond au maximum de profondeur pour l'engin de fraisage.We thus arrive at the phase shown in FIG. 5 which corresponds to the maximum depth for the milling machine.

Sur cette figure, pour des raisons de lisibilité de dessins, l'élément mâle 6b du tube télescopique a été représenté de manière tronquée, c'est-à-dire plus courte. Il en est de même de la partie inférieure du tube flexible 7.In this figure, for reasons of clarity of the drawings, the male element 6b of the telescopic tube has been shown in truncated form, that is to say shorter. The same applies to the lower part of the flexible tube 7.

On comprend en effet que dans la position de profondeur maximale correspondant à la figure 5, les éléments 6a et 6 b du tube télescopique sont restés dans la position de la figure 4 alors que l'abaissement de la poulie 8 a permis à la plus grande longueur du tube flexible 7 de s'engager dans le haut de la tranchée.It is in fact understood that in the position of maximum depth corresponding to FIG. 5, the elements 6 a and 6 b of the telescopic tube have remained in the position of FIG. 4 while the lowering of the pulley 8 has enabled the most long length of flexible tube 7 to engage at the top of the trench.

Il va de soi que la description qu'il vient d'être donnée du dispositif selon l'invention ne constitue pas une limitation à l'usage que l'on peut en faire.It goes without saying that the description that has just been given of the device according to the invention does not constitute a limitation on the use that can be made of it.

En particulier, il est clair que l'on peut, sans sortir pour celà du cadre de l'invention, commencer à descendre la fraise au maximum en maitenant le tube télescopique à l'état rentré et en abaissant la poulie 8 jusqu'à la position de la figure 5. A la suite de quoi après avoir remonté l'appareil on place les éléments du tube télescopique à l'état écarté, ce qui permet d'approfondir la tranchée d'une hauteur correspondant à celle du tube télescopique.In particular, it is clear that it is possible, without departing from the scope of the invention, to start lowering the cutter as much as possible by holding the telescopic tube in the retracted state and lowering the pulley 8 to the position of FIG. 5. Following which, after having reassembled the apparatus, the elements of the telescopic tube are placed in the separated state, which makes it possible to deepen the trench by a height corresponding to that of the telescopic tube.

On a représenté sur la figure 6, un dispositif de guidage qui permet de maintenir en position verticale les éléments du tube télescopique.There is shown in Figure 6, a guide device which keeps the elements of the telescopic tube in a vertical position.

Ce dispositif est utile tout d'abord pour guider l'élément mâle 6b lorsqu'il est soulevé de l'élément femelle 6a et d'autre part aussi pour maintenir la partie haute de l'élément femelle 6a dans l'hypothèse où le tube télescopique dépasse sensiblement au-dessus du châssis de l'engin de fraisage comme celà est le cas dans le mode de réalisation représenté sur la figure 1.This device is useful first of all for guiding the male element 6 b when it is lifted from the female element 6 a and on the other hand also for holding the upper part of the female element 6 a in the event where the telescopic tube protrudes substantially above the chassis of the milling machine as is the case in the embodiment shown in Figure 1.

On retrouve sur la figure 6 l'élément femelle 6adu tube télescopique femelle 6a dans lequel coulisse l'élément mâle 6b.FIG. 6 shows the female element 6 a of the female telescopic tube 6 a in which the male element 6 b slides.

On a schématiquement représenté en 11 le joint d'étanchéité situe entre ces deux éléments.Schematically shown in 11 is the seal located between these two elements.

Comme précédemment, la partie supérieure de l'élément mâle 6b est relié à l'extrémité de la canalisation flexible 7.As previously, the upper part of the male element 6 b is connected to the end of the flexible pipe 7.

On comprend que dans le cas où l'élément 6b est amené en position d'allongement par rapport à l'élément 6a, le tube télescopique peut s'élever sur une hauteur de plusieurs dizaines de mètres au-dessus du bâti de l'engin de fraisage.It is understood that in the case where the element 6 b is brought into the elongated position relative to the element 6 a , the telescopic tube can rise over a height of several tens of meters above the frame of the milling machine.

Comme par ailleurs, le tube flexible 7 est susceptible d'être soumis à des mouvements dûs au pompage des déblais, on comprend qu'il est préférable de maintenir la partie haute du tube télescopique en alignement avec sa partie basse.As moreover, the flexible tube 7 is liable to be subjected to movements due to the pumping of the cuttings, it is understood that it is preferable to keep the upper part of the telescopic tube in alignment with its lower part.

Celà est réalisé conformément à l'invention en fixant au voisinage de l'extrémité supérieure de l'élément femelle 6a un bras 13 qui s'engage par une douille à vis 14 sur la surface externe du tube femelle 6a et qui comporte une lunette 15 dans laquelle passe le câble 12 qui supporte l'engin de fraisage 4.This is carried out in accordance with the invention by fixing in the vicinity of the upper end of the female element 6 has an arm 13 which engages by a screw socket 14 on the external surface of the female tube 6 a and which comprises a telescope 15 through which the cable 12 which supports the milling machine 4 passes.

On sait en effet que ce type de dispositif comporte des engins de fraisage d'un poids considérable et qu'il est nécessaire de soutenir à l'aide d'un ou plusieurs câbles qui aboutissent au sommet de l'engin de levage et qui par la traction que l'on exerce sur eux permettent de déterminer la force d'appui sur le sol de l'engin de fraisage.It is known in fact that this type of device comprises milling machines of considerable weight and which it is necessary to support using one or more cables which terminate at the top of the lifting machine and which by the traction exerted on them makes it possible to determine the bearing force on the ground of the milling machine.

Il en résulte que ce ou ces câbles supports sont parfaitement verticaux et alignés avec l'engin de fraisage.As a result, this or these support cables are perfectly vertical and aligned with the milling machine.

De cette manière, un tel câble constitue un appui de guidage parfaitement efficace.In this way, such a cable constitutes a perfectly effective guide support.

Comme on l'a représenté sur la figure 6, un second bras 16 est fixé à l'aide d'une douille à vis 17 sur la partie haute de l'élément mâle 6b et est muni d'une lunette 18 à l'intérieur de laquelle passe le câble 12.As shown in Figure 6, a second arm 16 is fixed with a screw socket 17 on the upper part of the male element 6 b and is provided with a bezel 18 at the inside of which the cable passes 12.

Dans le cas d'un élément mâle 6b de grande longueur, il est également possible de disposer un ou plusieurs autres bras munis de lunettes entre le joint d'étanchéité 11 et le bras 16 qui vient d'être décrit.In the case of a male element 6 b of great length, it is also possible to have one or more other arms fitted with glasses between the seal 11 and the arm 16 which has just been described.

Bien entendu, de tels bras doivent être déserrés et repoussés vers le haut lorsqu'on fait rentrer l'élément mâle 6bdans l'élément femelle 6a.Of course, such arms must be loosened and pushed up when the male element 6 b is brought into the female element 6 a .

Il est bien entendu que les modes de réalisations qui ont été décrits ci-dessus ne présentent aucun caractère limitatif et qu'ils pourront recevoir toutes modifications désirables sans sortir pour celà du cadre de l'invention.It is understood that the embodiments which have been described above have no limiting character and that they can receive any desirable modifications without departing from the scope of the invention.

Claims (4)

1 - Dispositif pour l'évacuation de déblais résultant du forage d'une tranchée ou d'une excavation sous boue, de grande profondeur,caractérisé par le fait que la canalisation d'évacuation (6, 7) des déblais comporte une première section (6) disposée au voisinage des fraises de forage (4) qui est constituée par un tube télescopique (6a, 6b) et une seconde section constituée par un tube flexible (7) raccordée à la première section par une de ses extrémités et dont l'autre extrémité aboutit au voisinage du sol au point de déchargement des déblais, cette seconde section (7) étant supportée entre ses deux extrémités par une poulie (8) qui est suspendue à la partie supérieure de l'engin de levage (1) et dont la hauteur peut être modifiée en cours de travail.1 - Device for the evacuation of cuttings resulting from the drilling of a trench or an excavation under mud, of great depth, characterized in that the evacuation pipe (6, 7) of the cuttings comprises a first section ( 6) arranged in the vicinity of the drilling cutters (4) which is constituted by a telescopic tube (6 a , 6 b ) and a second section constituted by a flexible tube (7) connected to the first section by one of its ends and whose the other end ends in the vicinity of the ground at the point of unloading of the spoil, this second section (7) being supported between its two ends by a pulley (8) which is suspended from the upper part of the lifting machine (1) and the height of which can be changed during work. 2 - Dispositif selon la revendication 1, caractérisé par le fait qu'il comporte un dispositif de blocage qui permet de solidariser les deux éléments (6a, 6 b) du tube télescopique, notamment dans la position où ces deux éléments sont rentrés l'un dans l'autre.2 - Device according to claim 1, characterized in that it comprises a locking device for secure the two elements (6 a, 6 b) of the telescopic tube, in particular in the position in which these two elements are retracted the one in the other. 3 - Dispositif selon l'une quelconque des revendications précédentes, caractérisé par le fait que la seconde section flexible (7) de la canalisation est supportée par une poulie (8), elle-même suspendue par un câble (9) descendant du haut de l'engin de levage (1) qui est enroulé sur un treuil exerçant une force constante.3 - Device according to any one of the preceding claims, characterized in that the second flexible section (7) of the pipe is supported by a pulley (8), itself suspended by a cable (9) descending from the top of the lifting machine (1) which is wound on a winch exerting a constant force. 4 - Dispositif selon lune quelconque des revendications précédentes, caractérisé par le fait que la partie supérieure de l'élément femelle (6a) du tube télescopique et/ou la partie supérieure de l'élément mâle (6b) de ce tube sont maintenus en position verticale grâce à des lunettes de guidage (15, 18) dont ils sont solidaires et qui sont traversés par un câble (12) qui supporte l'engin de fraisage (4) lors de son travail.4 - Device according to any one of the preceding claims, characterized in that the upper part of the female element (6 a ) of the telescopic tube and / or the upper part of the male element (6 b ) of this tube are maintained in vertical position thanks to guide glasses (15, 18) of which they are integral and which are crossed by a cable (12) which supports the milling machine (4) during its work.
EP89402126A 1988-07-26 1989-07-26 Device for withdrawing dug material for making deep trenches Expired - Lifetime EP0353152B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402126T ATE77428T1 (en) 1988-07-26 1989-07-26 DEVICE FOR REMOVING SOIL FOR THE CREATION OF DIVING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8810067A FR2634805B1 (en) 1988-07-26 1988-07-26 DEVICE FOR EVACUATING CUTTINGS FOR MAKING LARGE DEEP TRENCHES
FR8810067 1988-07-26

Publications (2)

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EP0353152A1 true EP0353152A1 (en) 1990-01-31
EP0353152B1 EP0353152B1 (en) 1992-06-17

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EP89402126A Expired - Lifetime EP0353152B1 (en) 1988-07-26 1989-07-26 Device for withdrawing dug material for making deep trenches

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US (1) US4971157A (en)
EP (1) EP0353152B1 (en)
JP (1) JPH0739672B2 (en)
AR (1) AR240708A1 (en)
AT (1) ATE77428T1 (en)
CA (1) CA1317604C (en)
CY (1) CY1717A (en)
DE (2) DE68901826T2 (en)
ES (1) ES2014203T3 (en)
FR (1) FR2634805B1 (en)
HK (1) HK88693A (en)
RU (1) RU1838519C (en)
SG (1) SG46493G (en)

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US20110214918A1 (en) * 2007-08-21 2011-09-08 Keck Joshua N Excavation Apparatuses and Methods
US20110061313A1 (en) * 2009-09-16 2011-03-17 Vos Donald Adapters for the boom arm of an aerial work platform
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Publication number Priority date Publication date Assignee Title
US10995563B2 (en) 2017-01-18 2021-05-04 Minex Crc Ltd Rotary drill head for coiled tubing drilling apparatus
US11136837B2 (en) 2017-01-18 2021-10-05 Minex Crc Ltd Mobile coiled tubing drilling apparatus

Also Published As

Publication number Publication date
RU1838519C (en) 1993-08-30
FR2634805A1 (en) 1990-02-02
CA1317604C (en) 1993-05-11
ATE77428T1 (en) 1992-07-15
JPH0243420A (en) 1990-02-14
ES2014203A4 (en) 1990-07-01
AR240708A1 (en) 1990-09-28
FR2634805B1 (en) 1992-04-10
US4971157A (en) 1990-11-20
CY1717A (en) 1994-05-06
JPH0739672B2 (en) 1995-05-01
HK88693A (en) 1993-09-03
SG46493G (en) 1993-07-09
DE68901826D1 (en) 1992-07-23
ES2014203T3 (en) 1993-03-16
EP0353152B1 (en) 1992-06-17
DE68901826T2 (en) 1993-02-04
DE353152T1 (en) 1990-08-16

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