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WO2003031731A1 - Procede pour fabriquer un corps d'injection monobloc par injections dans un terrain de fondation - Google Patents

Procede pour fabriquer un corps d'injection monobloc par injections dans un terrain de fondation Download PDF

Info

Publication number
WO2003031731A1
WO2003031731A1 PCT/EP2002/010950 EP0210950W WO03031731A1 WO 2003031731 A1 WO2003031731 A1 WO 2003031731A1 EP 0210950 W EP0210950 W EP 0210950W WO 03031731 A1 WO03031731 A1 WO 03031731A1
Authority
WO
WIPO (PCT)
Prior art keywords
combination
injection
tubes
tube
bores
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.)
Ceased
Application number
PCT/EP2002/010950
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Bayer
Ortwin Caldonazzi
Wolfgang Oey
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.)
DRILLTEC GUT GmbH
Tracto Technik GmbH and Co KG
Original Assignee
DRILLTEC GUT GmbH
Tracto Technik GmbH and Co KG
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 DRILLTEC GUT GmbH, Tracto Technik GmbH and Co KG filed Critical DRILLTEC GUT GmbH
Publication of WO2003031731A1 publication Critical patent/WO2003031731A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
    • 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
    • E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil

Definitions

  • the invention relates to a method for producing a coherent press-in body by means of injections in the ground, coherent press-in bodies produced by the method and a combination tube for carrying out the method.
  • injections in the subsoil serve to consolidate the subsoil in order to increase the security of a pit against deformation and to reduce the risk of settlement of neighboring buildings or to seal the subsoil of dams.
  • the invention is therefore based on the problem of creating a method and a device with which coherent press-in bodies can be produced in a simple manner, with little energy expenditure, with larger bore spacing compared to known methods and with less injection means, by means of injections in the ground.
  • a method for producing a coherent press-in body by injections in the subsoil which according to the invention consists of the steps: introducing parallel long holes in the subsoil, injecting injection agent into every second hole and simultaneously applying negative pressure to the remaining holes.
  • the invention is based on the consideration of causing a direct penetration of the injection agent into the subsoil by laying injection pipes, which are suitable for low-pressure injections, parallel to one another in the subsoil, while in the interspaces between the injection pipes, further pipes are laid, both for a suction effect by applying negative pressure as well as for subsequent repressing. Due to the negative pressure, the injection means injected into the subsoil are moved to the bores subjected to negative pressure, so that the direction of flow and thus the direction of propagation of the injection means is targeted. Due to the negative pressure, all other possible pathways in the subsoil are checked in terms of flow direction, so that directed underground injection structures are created.
  • the bores which were previously subjected to negative pressure, can also be subjected to low pressure and corresponding injection agents. In this way, the thin points in the vicinity of the bores under vacuum can be converted into filled injection areas.
  • additional short bores can be arranged between the long bores for injecting injection agent in these areas.
  • This arrangement is particularly advantageous if the method according to the invention is used to produce a horizontal base seal in the form of a coherent press-in body.
  • the distance between the injection bores in the area of the long side seal and the area of the tapping and ascending section to ensure a tight tub can be reduced by penetration of additional bores, also as short bores.
  • the method according to the invention can be carried out particularly advantageously if insulated sleeve pipes are insulated in the injection bores and if the filter tube and sleeve bores are subjected to negative pressure.
  • the ring packers of the combination tubes can be inflated one after the other by introducing a pressure medium using the double packer interior system, which is gradually shifted into the areas of the cuffs, whereby the combination tubes are fixed and centered, just as the ring spaces are sealed off around the filter tube elements.
  • the combination pipes can be used to inject grout into the holes previously pressurized by either injecting the grout specifically through the filter pipe elements in the surrounding ground or by targeted grouting via the cuff pipe elements by applying an overpressure to the ring packer are brought to burst through the double packer internal system, after which the injection agent can be injected with a pressure adapted to the surrounding building ground.
  • sensor lines can be arranged under or next to the pipe sections.
  • sensor lines can be arranged in the pipe sections, which can be used to monitor the squeezing pressure during injection and the negative pressure.
  • a direction-controlled tearing open of the subsoil can be carried out by means of compressed air blows when the borehole is drilled into the subsoil.
  • An increase in travel between the pipe sections can be achieved if acid, for example hydrochloric acid, is first injected, which dissolves the calcareous soil components, after which the injection agent is injected to produce the press-in body.
  • acid for example hydrochloric acid
  • a further possibility of increasing the mobility is to bring about an artificial suffusion between the bores by subjecting the combination pipes to negative pressure. This allows the fine grain fraction in the ground to be extracted.
  • Soil can be created by preheating using microwave wire in the area of the holes.
  • An increase in mobility can also be achieved by draining the surroundings of the boreholes by means of electroosmosis.
  • a targeted increase in mobility between the combination tubes and the sleeve tubes can also be achieved if an electric field is applied between these tubes and suitable polar chemicals are introduced into every second tube section, the migration of which is caused by the electric field.
  • a characteristic, coherent press-in body can be produced, which is characterized by the production method.
  • the combination pipe can consist of sleeve pipe elements, ring packers encompassing the sleeve pipe elements in a sealed manner and filter pipe elements arranged between the sleeve pipe elements, the filter length of which is smaller than the distance from double packers on a compression or suction pipe that can be moved through the combination pipe (DPI double packer system).
  • each filter tube element can be gradually applied with negative pressure. This application of vacuum takes place synchronously with the injection of injection medium through the sleeves of adjacent sleeve pipes, which are acted upon by a similar double packer system.
  • the double packer system can be supplied with injection agent, which is pressed into the surrounding soil in a targeted and gradual manner through the filter pipe elements.
  • the rings gray packers can be provided with a predetermined breaking point which, when subjected to a pressure above the pressure for fixing, centering and partitioning, cause the ring packer to rupture, so that injection agent can also be injected into the subsoil in this area.
  • injection of injection means through the combination tube, both through the filter tube elements and through the sleeve tube elements, means that the injection distance of the combination tubes is the same is like the injection distance of the cuff tubes.
  • Fig. 1 is a schematic representation of the arrangement of sleeve tubes and combination tubes for performing the invention
  • FIG. 3 shows a schematic sectional view along the line III-III in FIG. 2
  • 4 shows a schematic sectional view along the line IV-IV in FIG. 2
  • FIG. 5 shows a schematic sectional view of a partial area of a combination tube according to the invention
  • FIG. 6 shows a representation of the injection agent distribution in the ground when injecting injection agent through sleeve pipes and applying a negative pressure in a combination tube arranged between them at the same distance
  • FIG. 7 shows a representation of the injection agent distribution in the ground after injecting injection agent through the combination pipe.
  • sleeve tubes 1 and combination tubes 3 are alternately arranged parallel to each other.
  • the cuffs 2 of the cuff tubes 1 are identified by dots, as are the filter tube elements 8 described in connection with FIG. 5.
  • the areas of the rubber cuffs 2 of the cuff tubes 1 and the areas of the filter tube elements 8 of the combination tubes 3 are acted on synchronously by passing through the cuff tubes 1 injection agent is injected into the ground while a vacuum is generated by the combination pipes 3 in the same area of the ground.
  • the direction of flow of the injection agent in the direction of the combination tubes is advantageously influenced, so that a geometrically defined, coherent press-in body is produced.
  • the injection distance can be reduced by ensuring that short sleeve pipes 5 are arranged in corresponding bores in this area so that two sleeve pipes 1,. 5 are located and in between combination tubes 3 are arranged. This arrangement can be seen from the top view in FIG. 2 and the sectional view along the line III-III in FIG. 3.
  • the distance between the sleeve pipes 1 and the combination pipes 3 is reduced in the area ascending to the subsoil surface compared to the depth area.
  • the combination tube 3 is composed of sleeve tube elements 7 and filter tube elements 8.
  • the sleeve pipe elements 7 have rubber sleeves 9 in the area of radial bores 10, which serve in a known manner as a valve with the combination pipe 3 with liquid or injection agent supplied with excess pressure.
  • Each sleeve tube element 7 is sealed and surrounded by an annular packer 11, which has a predetermined breaking point 12 in the exemplary embodiment shown.
  • the combination tube 3 is preferably installed using protective tube technology, the protective tube is pulled, and the ring packers 11 are started up one after the other by means of the pressing or suction tube 13, so that the double packers 15 come to a halt on both sides of the rubber sleeves 9 and are expanded there.
  • pressurized liquid for example water
  • pressurized liquid can be fed via the compression or suction tube to the space between the sleeve tube element 7 and the ring packer 11, so that the ring packer 11 is inflated and lies sealingly against the bore wall.
  • pressurized liquid for example water
  • the termination of the injection process i. H. when the injection agent has reached the area of the combination tube 3, recognize that these indicators are visible in the water sucked off through the combination tube.
  • a success check in the combination tube can be carried out - if necessary after cleaning the tube - using geophysical methods, in particular probes, in order to obtain information for repressing from the combination tube.
  • the targeted repressing from the combination tube can take place via the filter tube elements 8 but also via the sleeve tube elements 7.
  • the injection pressure is first increased to such an extent that the ring packer 11 is blown up in the area of the predetermined breaking point 12. whereupon injection means in the area of the sleeve pipe elements 7 can be injected into the ground 16 in the manner already described.
  • 6 shows the distribution of the indication means in the subsoil 16 with the arrangement of two sleeve pipes 1 and a combination pipe 3 arranged between them at the same distance.
  • the path between the pipe sections can also be increased by pressure acidification.
  • Another possibility of increasing the pathility is to create an artificial suffusion by applying the negative pressure, ie the Fine grain in the soil is shifted so that areas with greater permeability are created.
  • An increase in suction can also be achieved by increasing the suction voltage in the floor by preheating using microwave wire in the later installation pipe area.
  • Electro-osmosis also leads to an increase in mobility, since it causes drainage in the vicinity of the boreholes.
  • Another way to increase mobility is to use electrophoretic methods between the combination tubes and the sleeve tubes, in which an electric field is applied and suitable chemicals are introduced into every second tube section, the migration of which is caused by the electric field and leads to an increase in suction voltage.
  • pilot holes When the pilot holes are drilled out, a deep location is required, which can be carried out in a simple manner by combining several transmitters used.
  • spacing can be carried out from existing boreholes.
  • the location from parallel boreholes can be shown with transmitters. send locators. Echo systems or other distance measuring systems can be used.
  • Horizontal positioning systems can be used to drill the holes, for example mercury switching elements, which interact with corresponding correction devices, for example pull-forward circuits, and which allow the precise use of side milling tools or longitudinally perforated tubes.
  • a cutting rope can be pulled through in the gaps between the combination tube and sleeve pipe sections, whereby the rope, for example a steel rope with grid, is inserted into a hole and returned via a second hole in order to then announce the space between the holes. This creates a space that is available as an injection level. With sawing, there is also the possibility of drawing films or other sealing sheets.
  • Removable drilling fluids are preferably used when the holes are drilled open.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Soil Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

L'invention concerne un procédé pour fabriquer un corps d'injection par injections dans un terrain de fondation, ce procédé comprenant les étapes suivantes : façonner au moins deux trous dans le terrain de fondation, injecter un agent d'injection dans au moins un trou et mettre au moins un autre trou sous dépression.
PCT/EP2002/010950 2001-10-02 2002-09-30 Procede pour fabriquer un corps d'injection monobloc par injections dans un terrain de fondation Ceased WO2003031731A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10148730.4 2001-10-02
DE2001148730 DE10148730B4 (de) 2001-10-02 2001-10-02 Verfahren zum Herstellen eines gerichteten Einpresskörpers durch Injektionen im Baugrund und Kombirohr zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
WO2003031731A1 true WO2003031731A1 (fr) 2003-04-17

Family

ID=7701210

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/010950 Ceased WO2003031731A1 (fr) 2001-10-02 2002-09-30 Procede pour fabriquer un corps d'injection monobloc par injections dans un terrain de fondation

Country Status (2)

Country Link
DE (1) DE10148730B4 (fr)
WO (1) WO2003031731A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109881684A (zh) * 2019-04-08 2019-06-14 江苏建筑职业技术学院 一种基坑土建施工防潮水设施
WO2021212255A1 (fr) * 2020-04-20 2021-10-28 浙江大学 Procédé et dispositif de traitement de consolidation par drainage électro-osmotique "à électrode mobile" à base de technologie de fracturation pneumatique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004013726A1 (de) * 2004-03-18 2005-10-13 Franz Britze Verfahren zur nachträglichen Abdichtung von Bauwerken gegen drückendes Wasser
EP1650356A1 (fr) * 2004-10-20 2006-04-26 Ed. Züblin Ag Procédée d' optimisation d' une injection en sol

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952162A (en) * 1930-08-28 1934-03-27 Francois Cementation Co Ltd Grouting of ground, soil, or other measures
DE3618168A1 (de) * 1985-05-30 1986-12-04 Soletanche, Nanterre Verfahren zur statischen horizontalverdichtung von baugruenden
DE19623305A1 (de) * 1996-06-11 1997-12-18 Keller Grundbau Gmbh Verfahren und Vorrichtung zum Ausgleich von Gleiskörpersenkungen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545702A (en) * 1982-07-02 1985-10-08 Toa Grout Kogyo Co., Ltd. Boring-injection device, method for improving ground by means of the device and method for investigating ground state by means of the device
DE4121394A1 (de) * 1991-06-28 1993-01-14 Klemm Bohrtech Verfahren und vorrichtung zum ausheben von erdmaterial oder bodenschaetzen
DE4137003A1 (de) * 1991-08-02 1993-05-13 Boesinger Eugen Vorrichtung zum einpressen von pulver in boden oder schlamm
DE4125576A1 (de) * 1991-08-02 1993-02-04 Gerd Prof Dr Ing Gudehus Verfahren zum einpressen von pulver in weichem boden
DE19960023A1 (de) * 1999-12-13 2001-06-28 Keller Grundbau Gmbh Aktive Gründung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952162A (en) * 1930-08-28 1934-03-27 Francois Cementation Co Ltd Grouting of ground, soil, or other measures
DE3618168A1 (de) * 1985-05-30 1986-12-04 Soletanche, Nanterre Verfahren zur statischen horizontalverdichtung von baugruenden
DE19623305A1 (de) * 1996-06-11 1997-12-18 Keller Grundbau Gmbh Verfahren und Vorrichtung zum Ausgleich von Gleiskörpersenkungen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109881684A (zh) * 2019-04-08 2019-06-14 江苏建筑职业技术学院 一种基坑土建施工防潮水设施
CN109881684B (zh) * 2019-04-08 2024-03-15 江苏建筑职业技术学院 一种基坑土建施工防潮水设施
WO2021212255A1 (fr) * 2020-04-20 2021-10-28 浙江大学 Procédé et dispositif de traitement de consolidation par drainage électro-osmotique "à électrode mobile" à base de technologie de fracturation pneumatique

Also Published As

Publication number Publication date
DE10148730A1 (de) 2003-04-30
DE10148730B4 (de) 2007-06-14

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