EP0562238A1 - Underground water cutoff wall and method of constructing the same - Google Patents

Underground water cutoff wall and method of constructing the same Download PDF

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Publication number
EP0562238A1
EP0562238A1 EP93101398A EP93101398A EP0562238A1 EP 0562238 A1 EP0562238 A1 EP 0562238A1 EP 93101398 A EP93101398 A EP 93101398A EP 93101398 A EP93101398 A EP 93101398A EP 0562238 A1 EP0562238 A1 EP 0562238A1
Authority
EP
European Patent Office
Prior art keywords
water cutoff
wall
underground
sheets
mixture
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Withdrawn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
EP93101398A
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German (de)
English (en)
French (fr)
Inventor
Mitsuhiro Kunito
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.)
Ask Kenkyusho KK
Original Assignee
Ask Kenkyusho KK
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 Ask Kenkyusho KK filed Critical Ask Kenkyusho KK
Publication of EP0562238A1 publication Critical patent/EP0562238A1/en
Withdrawn legal-status Critical Current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 present invention relates to an underground water cutoff wall for stopping seepage of water and a method of constructing the same.
  • An underground water cutoff wall is used for preventing a reverse flow of saltwater, or an outflow of groundwater including a harmful substance which is permeated into the ground, and also as a weir for preserving groundwater in the ground.
  • the underground water cutoff wall in the past has been constructed by the following method. That is, the ground is firstly excavated to form an excavated ditch, and then a mixture of a slurry of a binding material and an aggregate such as sand and pebbles is cast into the excavated ditch to form an underground wall.
  • the underground wall comprising only the mixture of the aggregate and the binding material is capable of stopping seepage of water to some extent, there has been a problem, for example, in case that the mixing of the aggregate and the binding material is not enough.
  • another underground water cutoff wall comprises a plurality of sheet piles made of steel and the underground wall, the steel sheets being continuously embedded into the underground wall in such a manner as to stop the seepage of water.
  • the sheet piles embedded in the underground wall are effective to stop the seepage of water, the sheet piles may be corroded within a long time period.
  • saltwater, or groundwater including the harmful substance, etc. flows out to the sheet piles through the cracks, so that corrosion of the sheet piles may be accelerated. Therefore, in this case, it is so difficult for the underground water cutoff wall to stop the seepage of saltwater, etc., for the long time period.
  • the present invention is directed to an underground water cutoff wall having excellent corrosion resistance for stopping seepage of water for a long time period and a method of constructing the same. That is to say, the underground water cutoff wall comprises an underground wall and a plurality of water cutoff sheets made of an corrosion resistance material.
  • the underground wall comprises of a mixture of an aggregate such as sand and pebbles and a binding material.
  • the water cutoff sheets are continuously embedded into the underground wall in such a manner as to stop the seepage of water.
  • the corrosion resistance material is selected from a synthetic resin, a ceramic and glass, etc.
  • cement, or a mixture of cement and bentonite, etc. is used as the binding material.
  • reinforcing elements are embedded in the underground water cutoff wall.
  • the reinforcing elements are arranged along the water cutoff sheets in the underground wall. Steel bars and/or steel sheets, etc., are used as the reinforcing elements.
  • each of the water cutoff sheets is connected with the adjacent water cutoff sheet through a joint portion which is formed at the longitudinal side thereof. Therefore, the seepage of water through a space between the water cutoff sheets can be prevented by the joint portion.
  • the underground water cutoff wall of the present invention is constructed in the ground by the following method. That is, the ground is firstly excavated to form an excavated ditch therein. A mixture of the aggregate and a slurry of the binding material is cast into the excavated ditch to form the underground wall. Until the mixture is not hardened, the water cutoff sheets made of the corrosion resistance material are inserted into the underground wall such that each of the water cutoff sheets is connected with the adjacent water cutoff sheet through the joint portion which is formed at the longitudinal side thereof. Subsequently, the mixture is hardened to obtain the underground water cutoff wall of the present invention.
  • constructed underground water cutoff wall is capable of stopping the seepage of water over the long time period.
  • Another underground water cutoff wall of the present invention is constructed in the ground by the following method. That is, the ground is firstly excavated to form the excavated ditch therein. The mixture of the aggregate and the slurry of the binding material is cast into the excavated ditch to form the underground wall. Until the mixture is not hardened, the water cutoff sheets made of the corrosion resistance material are inserted into the underground wall such that each of the water cutoff sheets is connected with the adjacent water cutoff sheet through the joint portion which is formed at the longitudinal side thereof. In addition, the reinforcing elements are inserted into the underground wall along the water cutoff sheets. Subsequently, the mixture is hardened to obtain the underground water cutoff wall of the present invention.
  • constructed underground water cutoff wall is capable of stopping the seepage of water over the long time period, and also has an increased strength thereof.
  • an underground water cutoff wall 10 of the present invention is constructed by the following method of a first embodiment. That is, the ground 60 is excavated to form an excavated ditch 61 having an optional depth and length by a multi-shaft auger machine 70 , as shown in FIGS. 3 and 4.
  • the multi-shaft auger machine 70 contains a plurality of vertical shafts 71 .
  • Each vertical shaft has a boring bit 72 attached on each leading end thereof, a plurality of mixing paddles 73 and auger blades 74 arranged thereon, openings 75 for injecting a slurry of a binding material such as cement milk or a mixture of cement milk and bentonite into the excavated ditch 61 .
  • a plurality of holes are simultaneously excavated by the multi-shaft auger machine 70 .
  • the excavating by the auger machine is continued to form the excavated ditch.
  • the auger machine is capable of injecting the slurry of the binding material into the holes while the holes are being excavated thereby.
  • an underground wall 20 comprising the aggregate and the binding material is formed in the excavated ditch 61 .
  • the vertical cross section of the underground wall 20 is a rectangle, as shown in FIG. 1.
  • a plurality of water cutoff sheets 30 made of an corrosion resistance material are continuously inserted in the underground wall 20 in such a manner as to stop seepage of water, so that the underground water cutoff wall 10 is obtained, as shown in FIG. 1.
  • the corrosion material is selected from a synthetic resin, a ceramic and glass, etc.
  • each of the water cutoff sheets 30 is connected with the adjacent water cutoff sheet 30 through a joint portion 40 which is formed at the longitudinal side thereof, as shown in FIG. 2, the seepage of water from the space between the adjacent water cutoff sheets can be stopped by the joint portion 40 .
  • a shape of the water cutoff sheet 30 is not limited to that shown in FIG. 2.
  • the underground water cutoff wall 10 of the present invention is used for preventing the reverse flow of saltwater, or the outflow of groundwater including the harmful substance, or as a weir for preserving groundwater in the ground.
  • the underground water cutoff wall is constructed so as to surround a location 62 having an industrial waste and toxic waste with the underground water cutoff wall 10 , as shown in FIG. 4.
  • the outflow of groundwater including the harmful substance can be prevented by thus constructed water cutoff wall 10 .
  • An underground water cutoff wall of a second embodiment of the present invention is constructed according to the same method of the first embodiment except that reinforcing elements 50 are also inserted into the underground wall 20 along the water cutoff sheets 30 until the binding material in the underground wall is not hardened.
  • the reinforcing elements 50 are made of steel, etc. If necessary, steel sheets, steel bars 51 and/or steel reinforcements having all kinds of shapes are utilized as the reinforcing elements 50 . Of course, it is not concerned that the steel bars 51 are embedded into the underground wall 20 at a predetermined interval, as shown in FIG. 7, or sectionally embedded in the underground wall.
  • the reinforcing elements 50 is continuously embedded into the underground wall 20 along the water cutoff sheets 30 .
  • each of the reinforcing elements is connected with the adjacent reinforcing element through a joint portion which is formed at the longitudinal side thereof.
  • the underground water cutoff wall 10 of the second embodiment has excellent corrosion resistance and an increased strength thereof, which is capable of stopping the seepage of water with the water cutoff sheets 30 and the reinforcing elements 50 which are continuously embedded therein.
  • stress occurring from a natural phenomenon such as an earthquake and so on can be efficiently borne by the reinforcing elements 50 , so that the generation of a crack in the water cutoff sheets may be prevented.
  • the underground water cutoff wall 10 is utilized for preventing the outflow of groundwater including the harmful substance, it is preferred that the underground water cutoff wall 10 is constructed so as to surround the location 62 having the industrial waste and toxic waste therewith, and also the water cutoff sheets 30 are embedded into the underground wall 20 between the location 62 and the reinforcing elements 50 , as shown in FIGS. 9 and 10.
  • the reinforcing elements 50 are spaced away from groundwater, saltwater, or groundwater including the harmful substance by the water cutoff sheets 30 , it may be expected that the underground water cutoff wall 10 maintains the increased strength thereof over a long time period without corrosion of the reinforcing elements 50 .
EP93101398A 1992-03-24 1993-01-29 Underground water cutoff wall and method of constructing the same Withdrawn EP0562238A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4066174A JPH05272132A (ja) 1992-03-24 1992-03-24 地中連続止水壁及びその形成方法
JP66174/92 1992-03-24

Publications (1)

Publication Number Publication Date
EP0562238A1 true EP0562238A1 (en) 1993-09-29

Family

ID=13308220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101398A Withdrawn EP0562238A1 (en) 1992-03-24 1993-01-29 Underground water cutoff wall and method of constructing the same

Country Status (3)

Country Link
EP (1) EP0562238A1 (zh)
JP (1) JPH05272132A (zh)
TW (1) TW266240B (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283039A (en) * 1993-09-24 1995-04-26 Bank Master Systems Limited Piling
NL9500213A (nl) * 1995-02-06 1996-09-02 I D S B V I O Werkwijze voor het aanbrengen van een intern dijkscherm in een waterkering.
NL9500310A (nl) * 1995-02-17 1996-10-01 I D S B V I O Werkwijze voor het aanbrengen van een scherm in de bodem.
CN101544023B (zh) * 2009-04-15 2011-08-03 上海中技桩业股份有限公司 一种预留孔拼合灌接围护桩的制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103726513B (zh) * 2013-12-12 2016-01-20 安徽省建筑科学研究设计院 地下连续墙接缝防水结构及其施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139100A1 (en) * 1983-09-22 1985-05-02 Kabushiki Kaisha ASK Kenkyusho Steel sheet pile, sheet pile assembly thereof and the method of constructing the assembly
NL8502844A (nl) * 1985-10-17 1987-05-18 Dirk Verstoep B V Werkwijze voor het vervaardigen van een damwand, alsmede een geleidingselement en een damwandpaneel geschikt voor die werkwijze.
US4909674A (en) * 1987-05-28 1990-03-20 Kajima Corporation Underground continuous impervious wall and method for installing same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS641822A (en) * 1987-06-25 1989-01-06 Ohbayashi Corp Construction method of continuous cut-off wall
JP2688765B2 (ja) * 1988-08-19 1997-12-10 有限会社松兵衛 魚肉練製品

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139100A1 (en) * 1983-09-22 1985-05-02 Kabushiki Kaisha ASK Kenkyusho Steel sheet pile, sheet pile assembly thereof and the method of constructing the assembly
NL8502844A (nl) * 1985-10-17 1987-05-18 Dirk Verstoep B V Werkwijze voor het vervaardigen van een damwand, alsmede een geleidingselement en een damwandpaneel geschikt voor die werkwijze.
US4909674A (en) * 1987-05-28 1990-03-20 Kajima Corporation Underground continuous impervious wall and method for installing same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283039A (en) * 1993-09-24 1995-04-26 Bank Master Systems Limited Piling
NL9500213A (nl) * 1995-02-06 1996-09-02 I D S B V I O Werkwijze voor het aanbrengen van een intern dijkscherm in een waterkering.
NL9500310A (nl) * 1995-02-17 1996-10-01 I D S B V I O Werkwijze voor het aanbrengen van een scherm in de bodem.
CN101544023B (zh) * 2009-04-15 2011-08-03 上海中技桩业股份有限公司 一种预留孔拼合灌接围护桩的制备方法

Also Published As

Publication number Publication date
JPH05272132A (ja) 1993-10-19
TW266240B (zh) 1995-12-21

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