WO1994025688A1 - Verfahren zur abdichtung von bodenkörpern und vorrichtung zur durchführung dieses verfahrens - Google Patents
Verfahren zur abdichtung von bodenkörpern und vorrichtung zur durchführung dieses verfahrens Download PDFInfo
- Publication number
- WO1994025688A1 WO1994025688A1 PCT/EP1994/001352 EP9401352W WO9425688A1 WO 1994025688 A1 WO1994025688 A1 WO 1994025688A1 EP 9401352 W EP9401352 W EP 9401352W WO 9425688 A1 WO9425688 A1 WO 9425688A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sealant
- injected
- bore
- nozzles
- holes
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 68
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title abstract description 14
- 239000000565 sealant Substances 0.000 claims abstract description 41
- 239000002689 soil Substances 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 58
- 239000007924 injection Substances 0.000 claims description 58
- 230000004888 barrier function Effects 0.000 claims description 27
- 238000011109 contamination Methods 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 17
- 239000012170 montan wax Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims description 2
- 239000004908 Emulsion polymer Substances 0.000 claims 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000004568 cement Substances 0.000 claims 1
- 238000011156 evaluation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 235000019353 potassium silicate Nutrition 0.000 claims 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 239000012634 fragment Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/065—Deflecting the direction of boreholes using oriented fluid jets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/006—Sealing of existing landfills, e.g. using mining techniques
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Definitions
- the invention relates to a method for sealing natural or artificially poured soil bodies against an existing or potential gaseous, liquid, radiating and / or solid source of contamination,
- Injection device is manufactured and trough-tightly connected to the vertical diaphragm walls.
- the vertical, supported diaphragm walls required in this process in turn require a high level of technical complexity and are very expensive.
- pilot holes are used as controlled target holes by
- Guiding elements introduced, the beginning and end of which are in the opposite start and target shafts.
- a clearing and Injection device introduced with a
- Broaching element loosens the bottom of the surface sections and prepares it for treatment with a sealant. With this method, too, there are complex start-up and
- the technical problem underlying the invention is, in particular, a simple method for completely sealing floor bodies
- Sealant is injected into the surrounding bottom area of the bore. All forms of the introduction of sealant are mentioned in the following injection.
- Activities can be carried out from the surface, so that a complex mining start and
- Target shafts or the like is no longer necessary.
- contaminated area can be adjusted, whereby only a minimum amount of sealant for injection into the Floor areas becomes necessary. This minimizes the number and length of the holes required to completely enclose the contamination source or the construction pit to be created.
- Contamination focus is a safety distance from the
- Drilled holes to the contamination source and / or below the lowest points of the exploration holes of at least a few decimeters advantageous to achieve an absolutely secure seal of the contamination source.
- a well-known, but modified, fully controllable remote-controlled drilling head is advantageously used to advance the bores, which enables the bores to be drilled in any desired direction and depth
- the method according to the invention is particularly simple and efficient if the sealant continuously enters the bore during a longitudinal movement of the drill head
- the sealant is injected into the floor area through nozzles or outlet openings on the drill head.
- the goal is the creation of, for example, trough-like, mostly horizontal barrier layers.
- Injection paths each an angle of about 90 ° to 180 °. This can, for example
- Barrier layer is included, it is advantageous to advance a number of holes in the ground parallel to each other, the adjacent areas of a hole injected by sealant touching or into a previously created lamella, i.e. cut a floor area injected with sealant, so that no more seepage water through it
- Barrier layers and their overlapping areas can penetrate into deeper ground layers.
- a further number of holes at defined distances from one another at a vertical angle for example, to the first number of holes that the Drive under the contamination source, drive it forward and in turn inject these sealants into the adjacent floor areas.
- two or more completely closed barrier layers are formed which encompass the contamination source and which are absolutely safe
- Polymer silicates, resins, other waxes or other, chemically resistant and flexible injection media also have very advantageous properties.
- the barrier layer formed by the montan wax emulsion is resistant to liquid and gaseous ones Barrier attacking substances in seepage, capillary and groundwater.
- barrier layer with a thickness of 30 to 60 cm is sufficient to achieve a secure seal.
- the high lubricity of the montan wax emulsion is particularly important in the process according to the invention, since the high lubricity also enables good transport of other substances and e.g. a very small one
- the sealants are injected with the
- the method according to the invention is also possible below the frac pressure, depending on the permeability structure of the area surrounding the bore.
- the low-pressure injections make it possible to optimally adapt the barrier layers to be created to the soil conditions.
- the device for performing the method has
- Each of the pairs of nozzles comprises two
- Compressed air outlets can be surrounded, which result in a strong air pre-parallel cut, which makes it possible to form an arbitrarily shaped sealing jet, with a planar introduction of the sealant into the floor is preferred.
- injections are possible with the single (mono) to multi-phase procedures.
- Barrier layers forming sheet-like troughs below the source of contamination allow the leachate to be directed in certain directions.
- they are also cylindrical
- Fig. 1 is a schematic representation of a
- Fig. 2 shows a schematic illustration of the drill head in the case of
- Fig. 2a shows a schematic representation of the formation of a
- Fig. 3 shows a cross section transverse to a number of boreholes below the landfill
- Fig. 11 shows a schematic illustration of a front view of a drill head with differently directed nozzles
- Fig. 12 shows a schematic illustration of a side view of the device shown in FIG. 12 shown drilling head
- Fig. 13 is a schematic illustration of the
- Sealing a construction pit, 14 shows a schematic illustration of a cross section transverse to a pipeline with bores and injection areas introduced parallel thereto,
- 15 is a schematic representation of a cross section transverse to a pipeline with a leak which is sealed by a bore
- FIG. 17 shows a schematic representation of a cross section transverse to a pipeline which is surrounded by contaminated fragments of a destroyed pipe and which is secured by a bore and injections propelled beneath it;
- a landfill body 1 is irregularly shaped in the underground part.
- a number of holes 2 are made outside the landfill body from the surface with the known
- the sealant is in each case a hole 2 in the surrounding floor areas
- Barrier layer 4 is formed below the first barrier layer 3 by a network of bores 5, which are rotated by 90 ° here and spaced parallel to each other and bottom regions 4 injected therefrom.
- Fig. 2 the fully controllable, remotely steerable drill head 6 is shown as it passes under the landfill body 1.
- Example is shown in Fig. 3.
- bores 2 are slightly vertically offset from one another at intervals parallel to one another, and the barrier layers 4, each of which emanates from a bore 2 in a flat manner, overlap and form an angle of approximately 120 ° to one another.
- Sealant preferably montan wax
- barrier layers 3 can also be introduced into partial areas of the bottom layer.
- FIG. 4 to 10 schematically illustrate further exemplary embodiments for the arrangement of bores drilled using the method according to the invention.
- the bores each run horizontally or vertically. They can be inserted from the surface to any desired location to seal the floor.
- a first row of bores 2a are made one above the other at equal distances from one another in the ground.
- Bores 2b which also lie one above the other and run at equal distances from one another, are arranged offset to the first row of bores 2a. Two slightly widened sections each extend from each bore 2a, 2b
- Injection areas the injection areas starting from a bore enclosing an angle of approximately 130 °.
- the neighboring injection areas overlap. Those originating from the first row of bores 2a and from the second row of bores 2b
- Injection areas intersect each other so that completely enclosed areas are formed, in which e.g. further fully course-controlled bores 10 are introduced, which serve as monitoring bores.
- the individual injection areas extend further into the earth and form overlapping ones
- a row of bores 2c of the same structure is offset parallel to the first row of bores 2a.
- a third row of bores 2b with associated injection areas is arranged mirror-inverted to the second row parallel to it, whereby the injection areas extending from the individual bores 2b, 2c cross each other and form a diamond-shaped arrangement of the injection levels in cross section. Again, a reliable seal of the floor is guaranteed.
- Nozzle assemblies are injected into the surrounding floor area.
- the injection areas shown schematically are in reality different from the holes
- FIG. 8 shows a cross section transverse to a number of bores 2a, 2b, in which when the boring head is withdrawn or even when the individual bores 2a are being driven, the boring head is constantly rotating
- Injection agent is injected into the surrounding floor area.
- columnar injection areas each form a bore 2a.
- the bores 2a are spaced apart from one another in such a way that the injection regions each overlap an adjacent bore.
- Parallel to this are further bores 2b, from which individual soil layers enriched with injection means extend, which in turn are columnar
- Opposite nozzles are attached to the drill head in different ways Penetration depth of the injection agent in the surrounding area
- Injector is injected.
- the pivoting angle is approximately 45 °
- the drill head is pivoted back and forth by about 90 to 100 °.
- Fig. 11 and 12 show a schematic representation of the arrangement of the nozzles on the drill head 6, which is advantageously used for the examples mentioned.
- Fig. 11 is a front view showing the pair
- FIG. 12 is a side view of the drill head 6 according to FIG. 11, in which the front pair of nozzles is directed slightly forwards and the rear pair of nozzles rotated by 90 ° for this purpose is directed slightly backwards.
- Fig. 13 shows a further area of application of the
- a construction pit is sealed to protect against water ingress or pollutant seepage.
- the bores 2 are hereby made from a location outside of the provided construction pit 25 to the desired depth.
- a sealing trough is created by one of the previously described arrangement of bores and by injecting the injection means. Since with that
- different holes 2 can be driven from one location to seal a construction pit 25 shown schematically, only a change of location of the drilling device is necessary. From a first location, bores 2 are driven under the provided construction pit 25 and in each case
- Fig. 14 to 18 show a further area of application of the drilling method according to the invention.
- Fig. 14 shows a cross section through one in the ground
- the individual bores 2 run parallel to one another on a lateral surface lying around the center of the pipeline 20.
- FIG. 15 shows a damaged area 20a in a pipeline 20, through which harmful substances flow into those below
- Fig. 16 shows a cross section of a pipeline 20 which extends through two bores 2 lying parallel to one another with each bore 2 extending perpendicularly
- Injection areas is included in a lower portion.
- Fig. 17 and 18 show yet another area of application of the method according to the invention.
- the pipeline 20 used for the drainage of leachate used for the drainage of leachate
- a bore 2 is driven from the surface and injected with injection agent into the surrounding soil areas, so that either, as in Fig. 17 shown, a half-shell is formed, which forms a channel for the discharge of this leachate or, as in Fig. 18, several bores 2 are driven, the Injection areas the new pipeline 20 and
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Hydrology & Water Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002161779A CA2161779A1 (en) | 1993-04-28 | 1994-04-28 | A method for sealing off grounds sites |
DE59401546T DE59401546D1 (de) | 1993-04-28 | 1994-04-28 | Verfahren zur abdichtung von bodenkörpern und vorrichtung zur durchführung dieses verfahrens |
EP94915557A EP0690942B2 (de) | 1993-04-28 | 1994-04-28 | Verfahren zur abdichtung von bodenkörpern und vorrichtung zur durchführung dieses verfahrens |
RU95120570A RU2129191C1 (ru) | 1993-04-28 | 1994-04-28 | Способ изоляции объемных участков грунта, управляемая полностью направляемая головка бура для осуществления способа |
DK94915557T DK0690942T4 (da) | 1993-04-28 | 1994-04-28 | Fremgangsmåde til aflukning af jordbundsområder og indretning til udøvelse af denne fremgangsmåde |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4313994 | 1993-04-28 | ||
DEP4313994.9 | 1993-04-28 | ||
DE19934325290 DE4325290A1 (de) | 1993-07-28 | 1993-07-28 | Nachstromdüse |
DEP4335290.1 | 1993-10-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994025688A1 true WO1994025688A1 (de) | 1994-11-10 |
Family
ID=25925357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/001352 WO1994025688A1 (de) | 1993-04-28 | 1994-04-28 | Verfahren zur abdichtung von bodenkörpern und vorrichtung zur durchführung dieses verfahrens |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO1994025688A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19522723A1 (de) * | 1995-01-21 | 1996-07-25 | Bilfinger Berger Bau | Dichtwandmasse |
DE19940774A1 (de) * | 1999-08-27 | 2001-04-19 | Keller Grundbau Gmbh | Verfahren und Vorrichtung zum Herstellen von flächenhaften Dichtelementen im Erdboden |
EP1447521A2 (de) * | 2003-01-24 | 2004-08-18 | FERRARI DE NOBILI S.r.l. | Verfahren zur konsolidierung, wasserabdichtung und entwässerung von unterirdischen bauwerken durch steuerbohrungen |
NL1034067C2 (nl) * | 2007-06-29 | 2008-12-30 | B & P Bodeminjectie B V | Werkwijze voor het aanbrengen van een ondergrondse plaatvormige constructie. |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3410132A1 (de) * | 1984-03-20 | 1985-10-03 | Hummel, Conrad, 7000 Stuttgart | Verfahren zur vorwiegend horizontalen, nachtraeglichen abdichtung von deponien und vorrichtungen zur durchfuehrung des verfahrens |
DE3415883A1 (de) * | 1984-04-28 | 1985-10-31 | Karl Bräuer Spezial Tief- und Bergbautechnik, 6541 Ellern | Verfahren zur abdichtung kontaminierter muellkoerper gegenueber ihrer lagerstaette |
US4637462A (en) * | 1985-06-04 | 1987-01-20 | Grable Donovan B | Liquid mud ring control of underground liquids |
EP0317369A2 (de) * | 1987-11-20 | 1989-05-24 | Iit Research Institute | Einsperrung in porösem Material durch Entfernung von Wasser und dessen Ersetzung durch eine Abdichtungsmasse |
US4930586A (en) * | 1989-05-12 | 1990-06-05 | Ben Wade Oakes Dickinson, III | Hydraulic drilling apparatus and method |
WO1993000483A1 (en) * | 1991-06-24 | 1993-01-07 | Halliburton Nus Environmental Corporation | Apparatus and methods for cutting soil and in situ construction of subsurface containment barriers |
-
1994
- 1994-04-28 WO PCT/EP1994/001352 patent/WO1994025688A1/de active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3410132A1 (de) * | 1984-03-20 | 1985-10-03 | Hummel, Conrad, 7000 Stuttgart | Verfahren zur vorwiegend horizontalen, nachtraeglichen abdichtung von deponien und vorrichtungen zur durchfuehrung des verfahrens |
DE3415883A1 (de) * | 1984-04-28 | 1985-10-31 | Karl Bräuer Spezial Tief- und Bergbautechnik, 6541 Ellern | Verfahren zur abdichtung kontaminierter muellkoerper gegenueber ihrer lagerstaette |
US4637462A (en) * | 1985-06-04 | 1987-01-20 | Grable Donovan B | Liquid mud ring control of underground liquids |
EP0317369A2 (de) * | 1987-11-20 | 1989-05-24 | Iit Research Institute | Einsperrung in porösem Material durch Entfernung von Wasser und dessen Ersetzung durch eine Abdichtungsmasse |
US4930586A (en) * | 1989-05-12 | 1990-06-05 | Ben Wade Oakes Dickinson, III | Hydraulic drilling apparatus and method |
WO1993000483A1 (en) * | 1991-06-24 | 1993-01-07 | Halliburton Nus Environmental Corporation | Apparatus and methods for cutting soil and in situ construction of subsurface containment barriers |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19522723A1 (de) * | 1995-01-21 | 1996-07-25 | Bilfinger Berger Bau | Dichtwandmasse |
DE19940774A1 (de) * | 1999-08-27 | 2001-04-19 | Keller Grundbau Gmbh | Verfahren und Vorrichtung zum Herstellen von flächenhaften Dichtelementen im Erdboden |
DE19940774C2 (de) * | 1999-08-27 | 2003-03-06 | Keller Grundbau Gmbh | Verfahren und Vorrichtung zum Herstellen von flächenhaften Dichtelementen im Erdboden |
EP1447521A2 (de) * | 2003-01-24 | 2004-08-18 | FERRARI DE NOBILI S.r.l. | Verfahren zur konsolidierung, wasserabdichtung und entwässerung von unterirdischen bauwerken durch steuerbohrungen |
EP1447521A3 (de) * | 2003-01-24 | 2004-10-06 | FERRARI DE NOBILI S.r.l. | Verfahren zur konsolidierung, wasserabdichtung und entwässerung von unterirdischen bauwerken durch steuerbohrungen |
US6893188B2 (en) | 2003-01-24 | 2005-05-17 | Ferrari De Nobili S.R. L. | Continuous method of realization of works underground, tunnels and excavations in general with works of consolidation, permeabilization and drainage obtained through guided perforations |
EP2034129A2 (de) | 2003-01-24 | 2009-03-11 | Ferrari de Nobile S.r.L. | Verfahren zur Verfestigung, Abdichtung gegen Wasser und Trockenlegung von Untergrundarbeiten mittels gesteuerter Durchbohrungen |
EP2034129A3 (de) * | 2003-01-24 | 2011-01-26 | Ferrari de Nobile S.r.L. | Verfahren zur Verfestigung, Abdichtung gegen Wasser und Trockenlegung von Untergrundarbeiten mittels gesteuerter Durchbohrungen |
NL1034067C2 (nl) * | 2007-06-29 | 2008-12-30 | B & P Bodeminjectie B V | Werkwijze voor het aanbrengen van een ondergrondse plaatvormige constructie. |
EP2009225A1 (de) * | 2007-06-29 | 2008-12-31 | B & P Bodeminjectie B.V. | Verfahren zur Bereitstellung einer fliesenförmigen Bodenstruktur |
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