EP0553378B1 - Dispositif pour former une tranchée dans le sol pendant la construction d'un mur de soutien ou d'étanchéité - Google Patents

Dispositif pour former une tranchée dans le sol pendant la construction d'un mur de soutien ou d'étanchéité Download PDF

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Publication number
EP0553378B1
EP0553378B1 EP92101494A EP92101494A EP0553378B1 EP 0553378 B1 EP0553378 B1 EP 0553378B1 EP 92101494 A EP92101494 A EP 92101494A EP 92101494 A EP92101494 A EP 92101494A EP 0553378 B1 EP0553378 B1 EP 0553378B1
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EP
European Patent Office
Prior art keywords
supporting
supporting pipe
mast
constructed
discharge line
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.)
Expired - Lifetime
Application number
EP92101494A
Other languages
German (de)
English (en)
Other versions
EP0553378A1 (fr
Inventor
Dieter Dr.-Ing. Frenzel
Gerhard Dipl.-Ing. Gehrke
Detlef Dipl.-Ing. Jordan
Gunnar Dipl.-Ing. Lah
Clemens Dipl.-Ing. Versteegen
Holger Wippig
Werner Wippig
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.)
Hochtief AG
Original Assignee
Hochtief AG
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 Hochtief AG filed Critical Hochtief AG
Priority to DE59204931T priority Critical patent/DE59204931D1/de
Priority to EP92101494A priority patent/EP0553378B1/fr
Publication of EP0553378A1 publication Critical patent/EP0553378A1/fr
Application granted granted Critical
Publication of EP0553378B1 publication Critical patent/EP0553378B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/246—Digging wheels; Digging elements of wheels; Drives for wheels drives
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • E02F9/04—Walking gears moving the dredger forward step-by-step

Definitions

  • the invention relates to a device for introducing a substantially vertical bottom slot filled with support liquid in the course of the manufacture of a sealing or support wall, - with a milling unit which is kept movable up and down via a support tube and at its lower end two arranged one behind the other in parallel has horizontal axes of oppositely drivable cutting wheels, between which an intake port of a discharge line for loosened soil material is arranged.
  • the invention has for its object to provide a device of the type mentioned in a simple manner so that the path that the milling unit takes while working remains controllable even at great depths.
  • the solution to this problem according to the invention is that the support tube is held and guided up and down on a mast structure and is constructed and constructed from rotatably coupled support tube sections and that the mast structure is provided with a magazine for the support tube sections and from a movable horizontal lattice work and a vertical one Support mast is built, on which a crane boom for manipulating the support tube sections is attached via a slewing ring.
  • the invention is based on the finding that the desired control of the path of the milling unit is possible if the support tube is no longer held and guided directly on a correspondingly designed mast structure, but by means of ropes.
  • the required lengthening or shortening of the support tubes is particularly simple in terms of function and design using the magazine and crane boom.
  • the horizontal lattice work is level, movable in two mutually perpendicular horizontal directions and rotatable about a vertical axis.
  • the horizontal lattice is equipped with four crawler tracks in particular; this is also possible with a design of the horizontal lattice work as a walking frame, which more or less implies the above-mentioned movement possibilities.
  • the horizontal lattice is expediently provided with support platforms for corresponding device parts, such as motors and the like.
  • the vertical supporting mast is advantageously mounted on the horizontal latticework with the aid of alignment cylinder piston arrangements so as to be pivotable about a horizontal axis parallel to the longitudinal direction of the bottom slot.
  • the discharge line is expediently constructed from discharge line pipe sections in accordance with the supporting pipe. This will be combined with one of the support pipe sections to form a pipe section unit, so that the discharge pipe sections are carried out by themselves in the course of manipulating a support pipe section.
  • the discharge pipe sections can easily be arranged within the supporting pipe sections.
  • the support tube will advantageously be connected to the milling unit via a torsionally rigid universal joint.
  • This milling unit will advantageously be constructed from a cuboid guide body and a cutting wheel carrier pivotally mounted therein with the aid of control cylinder piston arrangements; A possible running of the milling unit can then be counteracted via the control cylinder piston arrangements.
  • a drive has been found to be recommendable, which is designed as a hydraulic drive with hydraulic pumps driven by electric motors and is accommodated in the milling unit, the electric motors being supplied via cables with electrical energy, which feeds from cable drums in the mast structure and back there again can be wound up.
  • a target plate is provided at the lower end of the support tube for a laser beam device arranged in the area of the mast support structure and the upper end of the support tube is provided with a measuring and control device for twisting a support tube.
  • the device shown in the figures is used to introduce a substantially vertical, with support liquid, for. B. bentonite suspension, filled bottom slot in the course of producing a sealing or retaining wall.
  • the device initially has a milling unit 100, which has two cutting wheels 101 at its lower end, which are arranged one behind the other around parallel ones horizontal axes 102 are mounted to be driven in opposite directions.
  • An intake port 103 of a discharge line 104 for loosened soil material is arranged between the cutting wheels 101 (cf. FIGS. 1, 2, 13 and 14).
  • the milling unit 100 is held and guided so that it can be moved up and down on a mast structure 300 via a support tube 200 made of support tube sections 201 that are coupled to one another in a rotationally fixed manner.
  • the mast structure 300 is constructed from a horizontal lattice structure 301 and a vertical mast 302.
  • the horizontal lattice structure 301 can be leveled, can be moved in two mutually perpendicular horizontal directions, namely in the longitudinal direction of the floor achlitz and transversely thereto, and can be rotated about a vertical axis.
  • the horizontal lattice structure 301 is equipped with crawler tracks 303 which are attached to brackets 304 of the lattice structure 301.
  • crawler tracks 303 which are attached to brackets 304 of the lattice structure 301.
  • the crawler track work 303 is height-adjustable and rotatably connected via a hydraulic cylinder piston arrangement 305 to a bushing in which the associated boom 304 is adjustably mounted with the aid of a further hydraulic cylinder piston arrangement 307.
  • Rotation of the horizontal lattice work 301 about a vertical axis is possible by setting the four crawler tracks 303 tangentially to an imaginary circle.
  • the horizontal lattice work 301 is designed as a walking frame Longitudinal and cross members 308 and 309 formed.
  • the cross members 309 are dissolved in two separate carriages 310 at the ends of the longitudinal members 308.
  • Two displacement cylinders 311 for each crossmember 309 allow the crossmembers 309 to be tilted as previously described for the crawler tracks 303, so that a rotary movement is also possible here.
  • An oblique sideways movement can also be carried out by parallel inclination of the crossbeams 309. Otherwise, the walking mechanism principle is as usual.
  • Fig. 1 reveals that the horizontal latticework 301 with support platforms 312 for aggregates, for. B. drive motors is provided.
  • the mast support structure 300 is provided with a magazine 313 for the support tube sections 201, which have a height of approximately 10 to 12 m. 2
  • the vertical supporting mast 302 is mounted on the horizontal latticework 301 with the aid of alignment cylinder piston arrangements 314 so as to be pivotable about a horizontal axis 315 parallel to the longitudinal direction of the bottom slot.
  • a crane boom 317 is attached to the vertical support mast 302 by means of a slewing ring, with which the support tube sections 201 can be manipulated, for example.
  • the mast support structure 300 is provided with a lower support tube guide clamp 318 and an upper support tube holder clamp 319 which can be moved up and down in the support mast 302.
  • the lower support tube guide bracket 318 shows Fig. 11.
  • the lower support tube guide clamp 318 is designed to be hinged and is designed to be movable back and forth in the mast support structure 300, ie the horizontal lattice structure 301.
  • the forward and backward movement as well as opening and closing of the lower support tube guide clamp 318 takes place with associated hydraulic cylinder piston arrangements 320.
  • Details of the upper support tube holder clamp 319 can be seen from FIGS. 8 to 10.
  • the upper support tube bracket 319 is also designed to be hinged and, if necessary, additionally provided with upper rollers 325 so that the associated end of the top support tube section 201 can rotate without constraints.
  • Said traction means 323 consists of two parallel link chains 326, the lower end of which is connected to the latticework 301 via compensating cylinder piston arrangements 327.
  • the hydraulic cylinder piston arrangement 324, with which the roller block 322 can be moved up and down, consists of two hydraulic cylinders. As can be seen in particular from FIG. 6, a predetermined stroke of the roller block 322 brings about a twice as large a stroke of the upper support tube bracket 319.
  • the support tube sections 201 are provided at their mutually associated endings with plug-in socket configurations 202 which have ring seals 203 (cf. in particular FIG. 12a).
  • the support tube sections 201 are provided at the mutually associated ends with radial flanges 204 which can be coupled to one another in a rotationally secure manner with the aid of plug bolts (not shown).
  • the discharge line 104 is also constructed from discharge line pipe sections 105 in accordance with the support pipe 206.
  • the discharge line pipe sections 105 are each combined with one of the support pipe sections 201 to form a pipe section unit.
  • the discharge pipe sections 105 are arranged within the support pipe sections 201.
  • a probe tube 205 serving for measurement purposes is also present in the support tube 200 and is designed in accordance with the discharge line 104.
  • the push-in socket formations 202 slide into one another by themselves until bores 206 in the radial flanges 204 are flush with one another, into which the plug pins can be inserted without further ado.
  • the ends of the push-in sleeves are staggered in the pipe longitudinal axis so that the joining of the individual pipe ends is visible and one after the other (see Fig. 12b).
  • the installation and removal of the seals 203 is also facilitated by this design. In the same way, the two pipe sections 201 can be easily removed from one another after the plug bolts have been removed.
  • the design of the milling unit 100 results from FIGS. 13 and 14.
  • the support tube 200 is connected to the milling unit 100 via a torsionally rigid universal joint 207.
  • the latter is constructed from a parallelepiped-shaped guide body 106 and a cutting wheel carrier 107 pivotally mounted therein with the aid of control cylinder piston arrangements 108.
  • the cutting wheel carrier 107 is above the control cylinder piston arrangements 108 connected to the guide body 106.
  • the cutting wheel carrier 107 is articulated (at 109) in the guide body 106 and can be controlled in different directions with the aid of the control cylinder piston arrangements 108.
  • the cutting wheels 101 have a hydraulic drive 110, the hydraulic pumps of which are driven by frequency-controlled electric motors.
  • This hydraulic drive 110 is housed overall in the milling unit 100 and can be supplied with electrical energy via cables 111, which can be unwound from cable drums 328 on the mast support structure 300 and wound onto them again.
  • a feed pump 112 for the discharge line 104 is also driven by an electric motor, which is also housed in the milling unit 100.
  • the cables 111 can be fixed on the support tube 200 in the area of the couplings of the support tube sections 201.
  • the cutting wheels 101 are driven mechanically via a shaft arrangement 208 guided through the support tube 200, in deviation from the aforementioned embodiments.
  • This shaft arrangement 208 can be plugged together in the same way as the support tube sections 201.
  • the mechanical shafts of the shaft arrangement 208 are driven by electric or hydraulic motors; on the secondary side, the shafts drive hydraulic pumps via articulated shafts and a transfer case, which are coupled to the cutting wheels 101.
  • the feed pump 112 of the discharge line 104 can also be arranged on the mast structure 300.
  • the discharge line 104 is then formed in connection with the intake manifold 103 as a tube arrangement which can be telescoped with the aid of adjusting cylinder piston arrangements 113 in order to keep the delivery head low.
  • a support tube section 201 is placed and coupled with the telescopic tube arrangement, whereupon the tube arrangement is moved together becomes. The stroke is then achieved in that the remaining part of the pipe section 201 is retracted during milling and then the telescopic pipe arrangement is moved apart again.
  • a probe can be lowered to check the position of the milling unit 100 via the probe tube 205 already mentioned.
  • Another embodiment is shown in FIG. 16.
  • the discharge line 104 runs outside of the support tube 200, i. H. the support tube 200 itself is used as a measuring tube.
  • a target plate 209 is provided for a laser beam device 329 arranged in the area of the mast structure 300.
  • the upper end of the support tube 200 is provided with a measuring and control device 210 for a rotation of the support tube. With the aid of this measuring and control device 210, an active rotary movement can also be exerted on the support tube 200 in order to force a counter-movement in the event of a different rotation of the milling cutter.
  • the ring seals 203 are lip seals.
  • the upper support pipe bracket 319 is expediently provided with a rotating ring 330 for the upper end of the support pipe 200 in order to ensure free rotation.
  • the milling unit 100 sinks down under its own weight, the free end of the upper support tube section 201 resting on the support tube mounting bracket 319 or being held by countermeasures. In this way it is possible to regulate the pressure of the cutting wheels 101 against the excavation base as desired the lowering of the milling unit 100 is controlled as a function of the mining capacity and the removal capacity.
  • the support tube 200 must be equipped kink-proof, z. B. by spacers are attached at intervals that correspond to the length of the pipe sections 201, which are supported against the slot flanks.
  • the support tube 200 is guided in the lower support tube guide clamp 318.
  • the upper support pipe bracket 319 is moved upwards, the upper end of the last pipe section 201 being held by the lower support pipe guide sections 318.
  • a new support pipe section 201 is put on, whereupon the lower support pipe guide clamp 318 is opened and pulled back, so that the coupling arrangement present between the support pipe sections 201 can be passed in the course of further milling.
  • the lower support tube guide clamp 318 is then moved forward again and closed and then serves to guide the new tube section 201.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (14)

  1. Dispositif pour former dans le sol une tranchée sensiblement verticale remplie de liquide de stabilisation au cours de la réalisation d'un mur de soutien ou d'étanchéité, à l'aide d'un ensemble de forage (100) qui est maintenu de façon mobile vers le haut et le bas par un tube porteur (200) et qui comporte à son extrémité inférieure deux roues trancheuses (101), montées autour d'axes horizontaux parallèles (102) disposés dans le prolongement l'un de l'autre, de façon à pouvoir être entraînées en sens opposé, et entre lesquelles est disposée une tubulure de sortie (103) d'un conduit d'évacuation (104) des matières terreuses, caractérisé en ce que le tube porteur (200) est maintenu sur une structure porteuse de mât (300), de façon à être mobile vers le haut et le bas tout en étant guidé par elle, et est réalisé à partir de tronçons de tubes porteurs (201) solidaires entre eux en rotation, et en ce que la structure porteuse de mât (300) est pourvue d'un chargeur (313) pour les tronçons de tubes porteurs (201) et est réalisée à partir d'une charpente à treillis (301) horizontale mobile et d'un mât porteur (302) vertical, sur lequel est fixée, à l'aide d'une couronne d'orientation (316), une flèche de grue (317) pour la manutention des tronçons de tubes porteurs (201).
  2. Dispositif selon la revendication 1, caractérisé en ce que la charpente à treillis (301) est conçue de façon à pouvoir être mise à niveau, mobile dans deux directions horizontales perpendiculaires et mobile autour d'un axe vertical.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la charpente à treillis horizontale (301) est pourvue de trains roulants à chenilles.
  4. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la charpente à treillis horizontale (301) est réalisée sous la forme d'un cadre marchant (308,309).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la charpente à treillis (301) horizontale est pourvue de plateformes portantes (312).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le mât porteur vertical (302) est monté sur la charpente à treillis horizontale (301), à l'aide de dispositifs d'alignement à pistons de cylindres, de façon à pouvoir pivoter autour d'un axe horizontal (315) parallèle à la direction longitudinale de la tranchée.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le conduit d'évacuation (104) est réalisé, de façon similaire au tube porteur (200), à l'aide de tronçons de conduits d'évacuation (105).
  8. Dispositif selon la revendication 7, caractérisé en ce que les tronçons de conduits d'évacuation (105) sont chacun assemblés avec l'un des tronçons de mât porteur (201) pour former une unité de tronçon de conduit.
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que les tronçons de conduit d'évacuation (105) sont disposés à l'intérieur des tronçons de mât porteur (201).
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que le mât porteur (200) est relié à l'ensemble de forage (100) par l'intermédiaire d'un joint de cardan rigide en torsion.
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que l'ensemble de forage (100) est réalisé à partir d'un corps de guidage (106) de forme parallélépipédique et de supports de roues trancheuses (107) qui y sont montés pivotants à l'aide de dispositifs de guidage à pistons de cylindres.
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que les roues trancheuses (101) comportent un entraînement hydraulique réalisé avec des pompes hydrauliques entraînées par des moteurs électriques, ledit entraînement hydraulique étant disposé dans l'ensemble de forage (100) et pouvant être alimenté en énergie électrique par l'intermédiaire de câbles (111) qui peuvent être déroulés sur la structure porteuse de mât (300) à partir de dévidoirs à câbles (328), et à nouveau enroulés sur ceux-ci.
  13. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que les roues trancheuses (101) sont entraînées par des pompes hydrauliques disposées dans l'ensemble de forage (100), lesdites pompes hydrauliques étant à leur tour mécaniquement entraînées par l'intermédiaire d'un dispositif à arbre (208) guidé par le tube porteur (200).
  14. Dispositif selon l'une des revendications 1 à 13, caractérisé en ce que le conduit d'évacuation (104) s'étend à l'extérieur du tube porteur (200), en ce qu'une cible (209) est prévue à l'extrémité inférieure du tube porteur (200) pour un dispositif à rayon laser (329) disposé au voisinage de la structure porteuse de mât (300), et en ce l'extrémité supérieure du tube porteur (200) est pourvue d'un dispositif de mesure et de commande (210) pour une rotation du tube porteur.
EP92101494A 1992-01-30 1992-01-30 Dispositif pour former une tranchée dans le sol pendant la construction d'un mur de soutien ou d'étanchéité Expired - Lifetime EP0553378B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59204931T DE59204931D1 (de) 1992-01-30 1992-01-30 Vorrichtung zum Einbringen eines Bodenschlitzes im Zuge der Herstellung einer Dicht- oder Stützwand
EP92101494A EP0553378B1 (fr) 1992-01-30 1992-01-30 Dispositif pour former une tranchée dans le sol pendant la construction d'un mur de soutien ou d'étanchéité

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92101494A EP0553378B1 (fr) 1992-01-30 1992-01-30 Dispositif pour former une tranchée dans le sol pendant la construction d'un mur de soutien ou d'étanchéité

Publications (2)

Publication Number Publication Date
EP0553378A1 EP0553378A1 (fr) 1993-08-04
EP0553378B1 true EP0553378B1 (fr) 1996-01-03

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EP92101494A Expired - Lifetime EP0553378B1 (fr) 1992-01-30 1992-01-30 Dispositif pour former une tranchée dans le sol pendant la construction d'un mur de soutien ou d'étanchéité

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DE (1) DE59204931D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1630297A1 (fr) * 2004-08-20 2006-03-01 BAUER Maschinen GmbH Procedée et appareil d'excavation à benne preneuse
FR2888859B1 (fr) * 2005-07-21 2007-10-19 Cie Du Sol Soc Civ Ile Installation de realisation de paroi enterree par melange du sol avec un liant et procede de correction de trajectoire de la tete de forage d'une telle installation
DE102007035591B3 (de) * 2007-07-30 2008-10-23 Bauer Maschinen Gmbh Tiefbauvorrichtung zum Erstellen von Schlitzen im Boden
FR2944299B1 (fr) * 2009-04-10 2016-08-26 Cie Du Sol Machine d'excavation de sol du type fraise munie d'un chariot mobile
CN106436796B (zh) * 2016-10-08 2019-07-09 周德吉 一种地下连续墙施工设备及施工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1634262B1 (de) * 1966-04-09 1970-09-24 Bade & Co Gmbh Fraeswerkzeug zum Herstellen von Schlitzen fuer Schlitzwaende
US4278136A (en) * 1979-03-20 1981-07-14 Hansson Goete I Sinkerdrill
US4415206A (en) * 1981-02-09 1983-11-15 Hodges Everett L Drill section and method of hydraulically mining mineral formations
DE3602387C1 (de) * 1986-01-28 1987-06-04 Hochtief Ag Hoch Tiefbauten Vorrichtung zum Einbringen eines im wesentlichen vertikalen Bodenschlitzes
EP0262050A1 (fr) * 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Dispositif pour engin destiné à creuser des tranchées dans le sol par fraisage
WO1988002435A1 (fr) * 1986-09-24 1988-04-07 G. Pezzimenti & Sons Pty. Ltd. Appareil de forage

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US3312291A (en) * 1964-10-05 1967-04-04 Raymond Int Inc Derricks
DE1580632C3 (de) * 1966-08-01 1973-10-18 Otto 2900 Oldenburg Reimann Schreitwerk fur ein Arbeite gerat, insbesondere fur Bagger, Rammen, Bohrgerate od dgl
US3603009A (en) * 1967-10-18 1971-09-07 Ihc Holland Nv Suction dredge having endless digger aligned with suction pipe
US4230372A (en) * 1978-12-04 1980-10-28 H. B. Zachry Company Dual rock cutter wheel trencher
IT1209018B (it) * 1983-01-24 1989-07-10 Casagrande Spa Benna fresatrice.
US4899832A (en) * 1985-08-19 1990-02-13 Bierscheid Jr Robert C Modular well drilling apparatus and methods
DE4008207A1 (de) * 1990-03-15 1990-08-23 Bilfinger Berger Bau Verfahren zur herstellung einer dichtwand

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1634262B1 (de) * 1966-04-09 1970-09-24 Bade & Co Gmbh Fraeswerkzeug zum Herstellen von Schlitzen fuer Schlitzwaende
US4278136A (en) * 1979-03-20 1981-07-14 Hansson Goete I Sinkerdrill
US4415206A (en) * 1981-02-09 1983-11-15 Hodges Everett L Drill section and method of hydraulically mining mineral formations
DE3602387C1 (de) * 1986-01-28 1987-06-04 Hochtief Ag Hoch Tiefbauten Vorrichtung zum Einbringen eines im wesentlichen vertikalen Bodenschlitzes
WO1988002435A1 (fr) * 1986-09-24 1988-04-07 G. Pezzimenti & Sons Pty. Ltd. Appareil de forage
EP0262050A1 (fr) * 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Dispositif pour engin destiné à creuser des tranchées dans le sol par fraisage

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EP0553378A1 (fr) 1993-08-04
DE59204931D1 (de) 1996-02-15

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