EP2102419A2 - Tête de forage destinée à l'excavation dans le sol d'un trou, et système de fondation pour former un pieu de fondation dans le sol - Google Patents

Tête de forage destinée à l'excavation dans le sol d'un trou, et système de fondation pour former un pieu de fondation dans le sol

Info

Publication number
EP2102419A2
EP2102419A2 EP07860870A EP07860870A EP2102419A2 EP 2102419 A2 EP2102419 A2 EP 2102419A2 EP 07860870 A EP07860870 A EP 07860870A EP 07860870 A EP07860870 A EP 07860870A EP 2102419 A2 EP2102419 A2 EP 2102419A2
Authority
EP
European Patent Office
Prior art keywords
drill head
pit
ground
housing
digging
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.)
Withdrawn
Application number
EP07860870A
Other languages
German (de)
English (en)
Inventor
Marinus Teunis Van Leeuwen Jr.
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.)
Gebr Van Leeuwen Harmelen BV
Original Assignee
VERTICAL DEV BV
Vertical Development BV
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 VERTICAL DEV BV, Vertical Development BV filed Critical VERTICAL DEV BV
Publication of EP2102419A2 publication Critical patent/EP2102419A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/26—Placing by using several means simultaneously
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/24—Placing by using fluid jets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units

Definitions

  • Drill head for the excavation in the ground of a pit, and a foundation system for the forming of a foundation pile in the ground
  • the invention relates to a drill head for the excavation in the ground of a pit and to a foundation system for the excavation in the ground of a pit to be filled with a hardenable mass for the forming after hardening of a foundation pile.
  • a drive unit for driving a toothed wheel dredge or the like.
  • the drill head then drills into the ground until a desired pit depth has been reached.
  • the pit is filled during excavation with a bentonite-containing suspension which serves as a support liquid.
  • the drill head is brought back upwards through the support liquid.
  • the pit is subsequently filled with bentonite which in this case expels the support liquid, so after hardening a concrete foundation pile is formed.
  • a drawback of the prior art system is that, despite the presence of the support liquid, there is a risk of damage to the previously formed pit wall, for example during or after the moving of the housing of the drill head along the pit wall. This can, in particular, lead to major problems if during excavation pit wall parts return wholly or partially to the pit. Examples include soil or stones which were initially pressed aside by the advancing drill head and which return to their original position once the drill head has passed. This can impede and/or delay the recovery of the drill head and can even lead to complete jamming of the drill head.
  • WO 03/085208 discloses a system for the forming of a foundation element in the ground, using a drill head provided with its own drive unit.
  • the drive unit is located within a housing and is powered from an energy source located above ground.
  • the drill head is itself able to dig down into the ground.
  • tube segments are pressed into the ground with the aid of a press installation in the pit excavated by the drill head. These tube segments are intended to be left behind in the ground where they form the pit wall of the foundation element.
  • the drill head is then also removed, through the tube segments which are left behind, up out of the pit thus formed.
  • the drill head is for this purpose configured with smaller radial dimensions than the tube segments.
  • the tube segments prevent local collapsing of the pit wall and ensure reliable and easy recovery of the drill head.
  • the introduction of such tube elements along with the soil is unnecessary or else prohibitively expensive.
  • the object of the present invention is to overcome at least some of the above-mentioned drawbacks or else to provide a usable alternative.
  • the object of the invention is to provide a multifunctional drill head allowing in a broad range of soil types reliable, rapid and efficient excavation of a pit, following which the drill head can be recovered, again rapidly and efficiently, from the excavated pit for further use.
  • the drill head comprises a housing having a drive shaft which is rotatable with respect to the housing.
  • a first and a second drive unit are provided in the housing for the driving in rotation of at least one first digging member positioned on one side of the drill head or for the driving in rotation of at least one second digging member positioned on the other side of the drill head.
  • the first digging member is then driven during the excavation of a pit, whereas the second digging member can be driven while the drill head is brought back out of the pit.
  • the second digging member then advantageously ensures that any non-uniformity formed in the pit wall once the drill head has passed along the wall during excavation is drilled out of the way or else pressed back into the pit wall.
  • the second digging member can be driven continuously or else only when necessary. Continuous driving has in this case the advantage of providing a qualitatively better pit wall.
  • the invention allows the drill head now to be brought at all times rapidly and efficiently back out of an excavated pit. The attachment of tube segments forming the pit wall is no longer necessary for this purpose.
  • the first and second drive units are preferably configured as separate drive units but can if necessary also be integrated in one common drive unit.
  • a suitable switching mechanism which serves, depending on whether the step of excavating or withdrawing is carried out, alternately to drive the first and the second digging member in rotation.
  • the drill head comprises flushing chambers which are positioned before the first and/or second digging member in the housing and have a supply and discharge extending from the drill head to a position above ground.
  • the supply is used in this case for the pressurized introduction during drilling of a flushing liquid into the flushing chamber.
  • the discharge is used to discharge during drilling the supplied flushing liquid mixed with soil removed by the respective digging member out of the flushing chamber. Soil which is removed by the activated digging member passes automatically into the flushing chamber. The removed soil is in this case pressed continuously into the flushing chamber by the respective digging member and the advancing drill head. The soil which is released can mix in the flushing chamber with the flushing liquid and easily be discharged via the discharge.
  • the pressure of the flushing liquid supplied in the flushing chamber is preferably set to an excess pressure slightly higher than the prevailing groundwater pressure in the surrounding soil.
  • the excess pressure is in this case approx. 0.1 - 0.3 bar. This excess pressure ensures that the soil at the site of the digging member can be discharged in a controlled manner. This reduces the risk of undesirable disturbances in the surrounding soil and thus the risk of scouring and subsidence.
  • the use of the flushing chamber at a slight excess pressure allows the discharge rate of the soil mixture to be precisely adapted to the desired drilling speed.
  • the flushing chamber before the first digging member in the housing is delimited by a base plate provided with inlets and/or the flushing chamber before the second digging member in the housing is delimited by a cover plate provided with inlets. This increases the efficiency with which the flushing liquid mixes with the removed soil particles.
  • the invention also relates to a foundation system according to claim 10.
  • the system comprises in this case a rod-like drive-in member, to the lower end of which the drill head according to the invention is connected.
  • the drive units are provided at the desired moments with energy by means of a power supply extending from an energy source above ground to the drive units in the housing of the drill head.
  • a pit can thus be formed in the ground in a continuous excavating process, while the forces required to do this are relatively low.
  • the rod-like drive-in member and a large portion of the drill head do not have to be driven in rotation.
  • the drill head can be brought back up out of the pit while driving the second digging member.
  • This recovery can, for example, be carried out by bringing the drive-in member back upward, wherein the drive-in member then entrains the drill head. It is also possible to raise the drill head by winching, wherein the drill head then presses the drive-in member up with it.
  • the invention further relates to a method according to claim 11.
  • the invention also relates to a method according to claims 26 - 28, to an assembly consisting of a drive-in member and a drilling head according to claim 29 and also to a foundation pile according to claim 30.
  • Figure 1 is a schematic view in longitudinal section of an embodiment of a foundation system according to the invention during excavation of the pit;
  • Figure 2 is a schematic view in cross section of a variation of the drilling head in Figure 1;
  • Figures 3a, b, c and d show successive steps of a method according to the invention using a foundation system according to Figure 2;
  • Figure 4 is a view corresponding to Figure 2 containing different types of drilling members.
  • Figures 5a, b, c and d show successive steps corresponding to Figure 3 utilizing a Kelly bar and a crane installation.
  • the foundation system is denoted in its entirety by reference numeral 1.
  • the foundation system 1 comprises a rod-like drive-in member 2 formed in this case by a telescopically extendable rod.
  • the lower end of the drive-in member 2 is connected to a drill head 3.
  • the drill head 3 comprises a housing 4 containing a drive unit 5 formed in this case by a hydraulic motor, and in particular a hydraulic motor having two directions of rotation, which is powered by means of a hydraulic line 6 from a pressure reservoir located above ground.
  • the drive unit 5 connects to a drive shaft 7 which is mounted in the housing 4 so as to be able to rotate and to which a digging member 8 is connected.
  • the digging member 8 is in this case formed by a wheel dredge, located on the underside of which are a plurality of cutter heads 9 which extend downwards and between which feed-through openings are provided for allowing removed soil particles to pass upwards.
  • a flushing chamber 10 Located above the digging member 8 is a flushing chamber 10 which is in this case delimited by wall parts of the housing 4 and the digging member 8. Connected to the flushing chamber 10 is a supply 14 for the pressurized supplying thereto of a flushing liquid. Also connected to the flushing chamber 10 is a discharge 15 for the discharging therefrom of the supplied flushing liquid mixed with the soil particles removed by the digging member 8.
  • a pit 16 is excavated in the ground 17 by activating the drive unit 5 and at the same time lowering the drive-in member 2 into the ground.
  • an insert sleeve 18 is pressed into the ground.
  • the insert sleeve 18 serves to guide the drill head 3 during excavation of an initial portion of the pit precisely into a desired position in the ground 17 and also to prevent undesirable collapsing of the crushable pit portion. Once the drilling process has been completed, this insert sleeve 18 can, if necessary, be removed again from the ground.
  • the foundation system 1 further comprises a supply 20 for the supplying during drilling of a support liquid to the previously excavated pit portion.
  • the support liquid is, in particular, a bentonite-containing suspension.
  • the supply 20 in this case opens at the top in the excavated pit portion.
  • the outer circumferential wall of the housing 4 of the drill head 3 is configured to rest during excavation directly against the earth circumferential wall of the pit 16 excavated by the digging member 8.
  • the housing 4 has for this purpose a substantially cylindrical outer circumferential- wall part.
  • this cylindrical outer circumferential wall part of the housing 4 moves downwards along the wall, excavated immediately beforehand, of the pit 16, it advantageously helps to reinforce the pit wall.
  • a possible method for the forming of a foundation pile in the ground using the foundation system 1 includes the following steps.
  • the insert sleeve 18 is conveyed into the ground, for example by means of ramming or vibrating. Subsequently, the assembly- consisting of the drive-in member 2 and the drill head 3 is guided into the portion of the insert sleeve 18 that protrudes above ground with the aid of an installation (not shown) .
  • the installation comprises for this purpose, for example, a crane installation provided with gripping means which are configured to act on the drive-in member 2.
  • the drive-in member 2 By then telescopically extending, for example hydraulically, the drive-in member 2, the drill head 3 can be lowered while digging into the ground 17 with a desired insertion force.
  • the drive unit 5 is thus activated, as are the pumps connected to the supply 14 and discharge 15.
  • the assembly consisting of the drive-in member 2 and drill head 3 is gradually lowered into the ground using the digging member 8 which is driven in rotation.
  • a pump connected to the supply 20 is activated for gradually supplying the support liquid into the pit.
  • the rotational speed of the digging member 8, the drive-in speed of the drive-in member 2 and the pump speeds of the pumps connected to the supply and discharge are in this case precisely coordinated with one another .
  • the outer circumferential wall of the housing 4 of the drill head 3 enters during excavation of the remainder of the pit 16 into direct contact with the surrounding soil 17.
  • the drive-in member 2 is telescoped, as a result of which the drill head 3 is brought back upwards through the support liquid 1.
  • a reinforcement can, if necessary, be attached in the excavated pit and a hardenable foundation mass is conveyed into the pit 16.
  • the support liquid will in this case be displaced upwards out of the pit 16.
  • the support liquid is pumped out of the pit and stored for subsequent use at the same time as the hardenable foundation mass is supplied.
  • FIG. 2 shows an alternative embodiment of the drill head.
  • the drill head 30 comprises in this case a housing having a cylindrical circumferential wall part 31.
  • the housing contains a mounting flange
  • the drive 33 is in this case formed by a hydraulic motor.
  • the hydraulic motor has the advantage that it takes up little space, can produce a high output and is not sensitive to moisture and dirt.
  • the upper side of the hydraulic motor can be connected to a hydraulic feed line (not shown) .
  • a base plate 40 Located below the mounting flange 32 is a base plate 40 provided with inlets.
  • a flushing chamber 43 is delimited between the mounting flange 32 and the base plate 40.
  • Connected to the flushing chamber 43 are a supply (not shown) for the supplying at a slight excess pressure of a flushing liquid and a discharge 45 for the discharging from the flushing chamber 43 of the supplied flushing liquid mixed with the soil particles removed by the digging member 36.
  • the removed soil particles mix with the flushing liquid and this mixture can be conveyed upwards to outside the excavated pit via the discharge 45.
  • the flushing liquid enters the flushing chamber 43 via the supply, strikes the base plate 40 and then sprays up on all sides.
  • the resulting vortex advantageously ensures thorough mixing of the flushing liquid with the soil.
  • the inlets are preferably configured so as to widen toward the top. As a result, the soil particles entering the inlets will pass into the flushing chamber 43 as they are discharged.
  • a bypass containing an activatable valve can be provided between the supply and the discharge 45.
  • the supply and discharge also contain activatable valves. The pipes can be efficiently flushed by activating these valves in a suitable manner.
  • the drill head 30 further comprises on its upper side a second digging member 50.
  • the digging member 50 can be driven by a drive 51 which in this case is also formed by a hydraulic motor.
  • a cover plate 52 provided with inlets is located below the digging member 50.
  • a second flushing chamber 54 extending annularly around the drive 51. Also provided on this flushing chamber 54 are a supply (not shown) for the supplying at a slight excess pressure of a flushing liquid and a discharge 55 for the discharging from the flushing chamber 54 of the supplied flushing liquid mixed with soil particles removed by the digging member 50.
  • Figure 3a shows the situation in which the drill head 30 is, when the digging member 36 is driven, at the same time lowered into the ground by exerting a downwards force on a rod-like drive-in member 57 connecting to the drill head 30.
  • a support liquid 61 is introduced into the excavated pit portion 60 formed above the drill head 30 (see Fig. 3b).
  • flushing liquid is supplied to the flushing chamber 43 where the flushing liquid mixes with removed soil particles, which mixture is subsequently discharged upwards via the discharge 45.
  • the rod-like drive-in member 57 is in this case advantageously hollow in its configuration, thus allowing the supply and discharge and also the power supplies before the drives to extend therethrough.
  • the drive 33 for the first digging member 36 is disconnected and the supply and discharge 45 after the flushing chamber 43 are shut off.
  • the drive 51 before the second digging member 50 is activated and the supply and discharge 55 after the second flushing chamber 54 are activated.
  • the drill head 30 can be drawn upwards out of the pit 60 by means of the rod-like drive-in member 57 (Fig. 3d) .
  • the second digging member 50 in this case also eliminates any non-uniformity from the bore hole located above the drill head 30.
  • the drill head 30 is provided with equalizing pipes 64 containing shut-off valves 65.
  • the equalizing pipes extend from the underside to the upper side of the drill head 30.
  • the shut-off valves 65 are placed in the open position and thus ensure that the support liquid which is in the first place located only above the drill head 30 can flow away downwards toward the free space formed during the withdrawal below the drill head 30.
  • FIG 4 An alternative embodiment of the drill head, using other types of digging members, is shown.
  • the left-hand half of Figure 4 shows in this case a first variation of the digging member, whereas the right-hand half of Figure 4 shows a second variation of the digging member.
  • the digging member comprises a plurality of fold-in digging elements 70 distributed over the circumference.
  • the fold-in digging elements 70 extend in the radial direction as a kind of spoke and are able to hinge about hinge pins 71 connected to the remainder of the digging member. The digging elements are thus free to automatically hinge downwards as soon as the drill head 30 is raised.
  • the digging elements 70 are free to automatically hinge upwards to a folded-out position as soon as the drill head 30 is placed on the ground and drilling is commenced.
  • This has the advantage that, in the folded-out position, the digging elements 70 can have radial dimensions which are somewhat larger than the remainder of the drill head, whereas in the folded-in position they assume smaller radial dimensions.
  • the digging elements 70 do not obstruct the drill head as it is drawn upwards out of the ground, thus reducing the risk of damage to the excavated drill pit wall and allowing the withdrawal forces advantageously to be reduced.
  • the left-hand type of digging element 70a is distinguished in that a plurality of scoops positioned next to one another are provided on the underside thereof, whereas the right-hand type of digging element 70b is provided on its underside with a series of teeth.
  • a specific type can be selected depending on the type of soil to be drilled into.
  • Figure 5 shows a variation of Figure 3.
  • the drive-in member consists in this case of an assembly of telescoped tubes which are configured in such a way that they can each be engaged with one another in an extended position by exerting a rotational force on the respective tubes.
  • An example of a telescopic tube assembly of this type with rotational engagement is commercially available as a Kelly bar.
  • a crane installation 80 comprising a drive 81 which is configured to act on the outer tube 82 in order to rotate the outer tube with respect to the drill head and the tubes already engaged therewith.
  • the drill head 30 can also be rotated while the outer tube is fixed. This also gives rise to engagement. Disengagement can be carried out by rotating the drive 81 or the drill head 30 respectively in the opposite direction.
  • Figure 5c shows a position in which two inner tubes 84, 85 are guided out of the outer tube 82 and engage with respect thereto, after which the crane installation 80 has lowered the engaged tube assembly into the ground over a specific stroke while driving the drill head 30.
  • a hoisting wire 87 which is rigidly connected to a lower portion of the tube assembly, is provided for removing the drill head 30 upwards, as is shown in Figure 5d.
  • the tubes are thus telescoped and drawn upwards together with the drill head 30 out of the excavated pit.
  • the drill head can also be used for the drilling out of pits for other purposes than foundation piles, and the orientation of the pit may have any desired direction.
  • the second digging member for drilling the drill head out of the pit may have any desired embodiment and for example, they may be constructed in foldable just like the first digging member.
  • the drive-in member may also be omitted or shaped differently, and for example may thus also be formed by a non-telescopically extendable rod, for example a segmented rod as shown in Figure 4, to which in each case a new rod part can be fastened in order to extend the rod.
  • the drive-in installation in this case comprises, for example, gripping means which are configured to exert a continuous downwards force on the rod.
  • the gripping means may also be provided so as to be able to move up and down in order in each case to secure a rod part, to press it downwards in order then to release this rod part, to move unimpeded upwards where it secures a new rod part.
  • the installation for the lowering into the ground of the drive-in member together with the drill head is preferably configured to act on the outer circumferential wall of the drive-in member. It is also possible to provide in the drill head a different type of drive unit, for example an electric drive such as an electric motor.
  • the digging members preferably have radial dimensions which are greater than or equal to those of the outer circumferential wall of the housing of the drill head.
  • the digging members may be of a different type. If the drive-in member is used, then the drill head has, in particular, radial dimensions larger than those of the drive-in member. More particularly, the outer circumferential wall of the housing of the drill head has radial dimensions which are at least two times larger than those of the drive-in member.
  • the outer circumferential wall of the housing can have any desired shape. Preferably, the housing is cylindrical in its configuration.
  • the invention thus provides an efficient and reliable operating drill head which is particularly suitable for use in a foundation system, which can advantageously be used for all types of projects, in particular for the production of foundation piles having a length between 50 - 100 metres.
  • These foundation piles are characterized by a high load bearing capacity, partly owing to the fact that the hardened foundation mass rests directly against or mixes to a certain extent with the surrounding soil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

Une tête de forage destinée à l'excavation dans le sol d'un trou, en particulier d'un trou à remplir d'une masse durcissable pour former après durcissement un pieu de fondation, comprend : un boîtier (21) présentant un arbre d'entraînement (35) qui peut tourner par rapport au boîtier (31); une première unité d'entraînement (33) destinée à entraîner en rotation, par entraînement de l'arbre d'entraînement (35), au moins un premier élément de creusement (36) disposé sur un côté de la tête de forage (30), se trouvant à l'intérieur du boîtier (31); et une seconde unité d'entraînement (51) destinée à entraîner en rotation au moins un second élément de creusement (50) disposé sur l'autre côté de la tête de forage (30), se trouvant à l'intérieur du boîtier (31).
EP07860870A 2006-12-13 2007-12-11 Tête de forage destinée à l'excavation dans le sol d'un trou, et système de fondation pour former un pieu de fondation dans le sol Withdrawn EP2102419A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1033050A NL1033050C2 (nl) 2006-12-13 2006-12-13 Funderingsysteem voor het vormen van een funderingspaal in de grond.
PCT/NL2007/000307 WO2008072951A2 (fr) 2006-12-13 2007-12-11 Tête de forage destinée à l'excavation dans le sol d'un trou, et système de fondation pour former un pieu de fondation dans le sol

Publications (1)

Publication Number Publication Date
EP2102419A2 true EP2102419A2 (fr) 2009-09-23

Family

ID=38191144

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07860870A Withdrawn EP2102419A2 (fr) 2006-12-13 2007-12-11 Tête de forage destinée à l'excavation dans le sol d'un trou, et système de fondation pour former un pieu de fondation dans le sol
EP07860869A Withdrawn EP2102418A2 (fr) 2006-12-13 2007-12-11 Système de fondation pour la formation d'un pieu de fondation dans le sol

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07860869A Withdrawn EP2102418A2 (fr) 2006-12-13 2007-12-11 Système de fondation pour la formation d'un pieu de fondation dans le sol

Country Status (3)

Country Link
EP (2) EP2102419A2 (fr)
NL (1) NL1033050C2 (fr)
WO (2) WO2008072951A2 (fr)

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Publication number Priority date Publication date Assignee Title
NL2007882C2 (en) * 2011-11-28 2013-05-30 Van Leeuwen Harmelen Bv Geb Excavator for discharging bottom parts from a bottom floor.
EP2703596B1 (fr) * 2012-08-31 2015-02-18 BAUER Maschinen GmbH Dispositif de forage et procédé d'établissement d'un forage
EP2730703B1 (fr) * 2012-10-15 2015-03-25 BAUER Maschinen GmbH Procédé et dispositif destinés à l'établissement d'un élément de fondation
EP2743403B1 (fr) * 2012-12-12 2015-03-25 BAUER Maschinen GmbH Dispositif et procédé destinés à l'établissement d'un élément de fondation
CN113640046A (zh) * 2021-08-17 2021-11-12 茆荣 一种土壤检测用的分层取样系统

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US4330155A (en) * 1980-03-26 1982-05-18 Santa Fe International Corporation Bore hole mining
DE3516312C1 (de) * 1985-05-07 1986-10-16 Gesellschaft für Strahlen- und Umweltforschung mbH München, 8042 Oberschleißheim Bohrmaschine mit einem ueber ein verlaengertes Bohrgestaenge antreibbaren Bohrkopf
US5378085A (en) * 1993-10-01 1995-01-03 S. M. W. Seiko Methods for in situ construction of deep soil-cement structures
JP2505977B2 (ja) 1993-12-03 1996-06-12 成幸工業株式会社 地下連続壁の形成方法
NL1021143C2 (nl) * 2002-04-04 2003-10-07 Van Leeuwen Harmelen Bv Geb Werkwijze voor het aanbrengen van ten minste één funderingspaal in de Werkwijze voor het aanbrengen van ten minste één funderingspaal in de grond. grond.
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Also Published As

Publication number Publication date
WO2008072950A3 (fr) 2008-07-31
NL1033050C2 (nl) 2008-06-16
WO2008072951A2 (fr) 2008-06-19
WO2008072951A3 (fr) 2008-08-07
EP2102418A2 (fr) 2009-09-23
WO2008072950A2 (fr) 2008-06-19

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