EP0210682A1 - Méthode pour réaliser un écran dans le sol - Google Patents

Méthode pour réaliser un écran dans le sol Download PDF

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Publication number
EP0210682A1
EP0210682A1 EP86201139A EP86201139A EP0210682A1 EP 0210682 A1 EP0210682 A1 EP 0210682A1 EP 86201139 A EP86201139 A EP 86201139A EP 86201139 A EP86201139 A EP 86201139A EP 0210682 A1 EP0210682 A1 EP 0210682A1
Authority
EP
European Patent Office
Prior art keywords
slot
foil section
supply
foil
narrowing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86201139A
Other languages
German (de)
English (en)
Other versions
EP0210682B1 (fr
Inventor
Wolter Reinold De Sitter
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.)
Hollandsche Beton Groep NV
Original Assignee
Hollandsche Beton Groep NV
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 Hollandsche Beton Groep NV filed Critical Hollandsche Beton Groep NV
Publication of EP0210682A1 publication Critical patent/EP0210682A1/fr
Application granted granted Critical
Publication of EP0210682B1 publication Critical patent/EP0210682B1/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
    • 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

Definitions

  • the invention relates to a method of manufacturing a screen in the soil during which a slot is made into the soil into which slot a foil from a supply roll is guided such that the longitudinal axis of the foil section extends according to the plan of the slot with the width of the foil section corresponding to the depth of the slot, which slot upstream of the place of supply of the foil section is filled up, a barrier being generated between the location of supply of the filling material and the location of supply of the foil section, in the form of a narrowing of the slot which has to prevent the flowing of filling material into the direction of the location of supply of the foil section but permits the passage of the foil section.
  • Such a method is known from e.g. US specification 4,337,006, in particular fig. 10.
  • the filling material, which upstream is supplied into the slot which has already been provided with the foil section comprises gravel or the like dry grannular bulk mate­rial.
  • the narrow slot only allows the passage of the foil section or sections. In the space of supply of the foil section, accordingly down­stream the narrowing air is only present.
  • said dry method the nar­rowing through which the foil section enters the slot, has to be very narrow since otherwise gravel still will enter through the slot into the space into which the foil section is supplied.
  • the foil section is subjected to large friction and often it cannot be suffi strictlyciently prevented that gravel enters into the space of supply of the foil section through the narrowing.
  • the foil section is unwound from a supply roll which has been placed into a casing with its axis of rotation vertical.
  • the manner of supply of the foil section to said casing is not essential, however.
  • Purpose of the invention is to provide a method in which the foil section more easily can move outwardly through the narrowing into the slot and a filling material can be supplied which cannot be applied at all with the known dry method, such as a filling material which is liquid in the beginnning.
  • this purpose is achieved in that the space within which the supply of the foil section takes place downstream the narrowing is kept filled with water to which has been added an agent increasing the viscosity such as bentonite, the filling material which upstream the narrowing has been supplied comprises concrete mortar and the pressure in the space downstream the narrowing is kept higher than upstream the narrowing.
  • the filling material accordingly now is a liquid filling material which after insertion hardens and together with the foil section forms a screen which can take up load.
  • the method according to the present invention can be applied therewith by providing a narrowing between the area of the reversing rod or roller around which the foil section is supplied and the upstream located space into which concrete mortar is supplied with upstream of said narrowing the concrete mortar and downstream, accordingly in the space within which is present the reversing rod or roller, the high viscous liquid is applied. Said liquid self does not form an objection for properly guiding the foil section about the reversing rod or roller and prevents the entering of concrete mortar.
  • a method is decribed for providing a screen into the soil according to which the foil section is also guided from a supply roller above the surface about a rod extending into the slot at an angle to the horizontal, said foil section having a width which corresponds to the depth of the slot and extends also in the direction of the plan of the slot.
  • bentonite is supplied which is mixed with soil losened by the digging device manufacturing the slot, which mixture of bentonite and soil is pumped away after which bentonite and soil are separated from each other and the soil together with water is fed into the slot upstream the device for inserting the foil section into the slot, in which part of the slot separation of soil and water takes place.
  • the drawings show a tractor 1 with tracks 2 which is movable over the soil 3.
  • Said tractor carries a digging chain 5 from an arm 4 which by means of the cylinder 6 can be lowered or raised respectively.
  • a foil supply device 7 has been suspended pivotably from the arm 4 which device can swing about the pivot point 8 by means of the cylinder 9.
  • This devi­ce carries a foil supply roll 10.
  • Inside the casing there is a guide rod 11 placed at 45° about which the foil section moving from above down­wardly is guided into a horizontal direction and accordingly extends in the direction of the plan of the slot as indicated at 12.
  • the slot walls are indicated with 13 and 14.
  • the casing 7 has a narrowing or slit 15 through which the foil section 12 may move outwardly.
  • water is supplied with a viscosity increasing agent such as bentonite, to the space of the device or casing 7 containing the guiding rod 11, whereas in the space 16 upstream the narrowing 15 cement mortar is supplied by means of which the foil section 12 is pressed against the wall 13 of the slot.
  • a viscosity increasing agent such as bentonite
  • the viscosity of the water can be increased as well by adding glucose, starch preparations, carboxyl methyl cellulose and other means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
EP86201139A 1985-07-30 1986-06-27 Méthode pour réaliser un écran dans le sol Expired - Lifetime EP0210682B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8502160A NL8502160A (nl) 1985-07-30 1985-07-30 Werkwijze voor het vervaardigen van een scherm in de grond.
NL8502160 1985-07-30

Publications (2)

Publication Number Publication Date
EP0210682A1 true EP0210682A1 (fr) 1987-02-04
EP0210682B1 EP0210682B1 (fr) 1990-04-04

Family

ID=19846376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201139A Expired - Lifetime EP0210682B1 (fr) 1985-07-30 1986-06-27 Méthode pour réaliser un écran dans le sol

Country Status (3)

Country Link
EP (1) EP0210682B1 (fr)
DE (1) DE3670111D1 (fr)
NL (1) NL8502160A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0606896A1 (fr) * 1993-01-12 1994-07-20 Bilfinger + Berger Bauaktiengesellschaft Dispositif d'enroulement et de déroulement des membranes en forme de bandes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136716A1 (de) * 1991-11-07 1993-05-13 Wilhelm Haddick Gmbh & Co Kg Verfahren und vorrichtung zur herstellung von dichtwaenden im boden

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2048710A (en) * 1932-11-25 1936-07-28 Ranney Leo Process for building underground structures and apparatus therefor
NL6900976A (fr) * 1968-01-22 1969-07-24

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337006A (en) * 1978-04-19 1982-06-29 Lacey Edward H Device for preparing and cleaning trench for an aquifer recharging system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2048710A (en) * 1932-11-25 1936-07-28 Ranney Leo Process for building underground structures and apparatus therefor
NL6900976A (fr) * 1968-01-22 1969-07-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0606896A1 (fr) * 1993-01-12 1994-07-20 Bilfinger + Berger Bauaktiengesellschaft Dispositif d'enroulement et de déroulement des membranes en forme de bandes

Also Published As

Publication number Publication date
DE3670111D1 (de) 1990-05-10
NL8502160A (nl) 1987-02-16
EP0210682B1 (fr) 1990-04-04

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