JPH0433326B2 - - Google Patents
Info
- Publication number
- JPH0433326B2 JPH0433326B2 JP13949787A JP13949787A JPH0433326B2 JP H0433326 B2 JPH0433326 B2 JP H0433326B2 JP 13949787 A JP13949787 A JP 13949787A JP 13949787 A JP13949787 A JP 13949787A JP H0433326 B2 JPH0433326 B2 JP H0433326B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- trench
- sheet
- construction
- wall
- 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.)
- Expired
Links
- 238000010276 construction Methods 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000004567 concrete Substances 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は地中連続遮水壁工法に関するもので
ある。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an underground continuous impermeable wall construction method.
地下構造物を施工中の地下水の湧水を防ぎ、或
いはダム工事における地下水の止水等を目的とし
て地中連続壁を構築するか、シートパネルを打設
してジヨイント部に注入を行う等の工法が採用さ
れている。
In order to prevent groundwater from springing up during construction of underground structures or to stop groundwater during dam construction, it is necessary to construct an underground continuous wall, or to pour sheet panels into joints. construction method has been adopted.
これら従来の工法を止水のみを目的として構築
する場合、以下のような問題点がある。 When using these conventional construction methods for the sole purpose of water stopping, there are the following problems.
イ 地中連続壁は必要以上の壁厚を施工するのが
通常であり、施工が不必要に大がかりとなると
ともに余分なコンクリートを大量に使用して施
工費が高価である。B. Underground continuous walls are usually built with a wall thickness greater than necessary, making the construction unnecessarily large-scale and using a large amount of excess concrete, resulting in high construction costs.
ロ シートパイルを打設してジヨイント部に注入
を行う工法も同じく施工が大がかりであり、材
料費が高価である。The method of driving sheet piles and injecting into the joints also requires extensive construction and is expensive in material cost.
ハ 地中連続壁において施工費を安価にするため
に壁厚を薄く造ることも考えられるが、狭巾の
溝を掘削し得る機械もなく、例え狭巾の溝が掘
れたとしてもコンクリートの流動性が損なわれ
て均質な地中壁は完成できない。C. It is possible to make the wall thickness thinner in order to reduce construction costs for underground continuous walls, but there are no machines that can excavate narrow trenches, and even if a narrow trench can be dug, the flow of concrete A homogeneous underground wall cannot be completed due to the loss of properties.
ニ また止水の確実性及び信頼性の点で見れば、
コンクリート壁は地震時のクラツクが止水性を
損なわせ、プレキヤストコンクリートパネルや
シートパイルを使用した工法ではジヨイント部
に夾雑物、ベントナイト等を挟み込み充分な止
水性能を得ることができなかつた。D. Also, from the point of view of water stoppage certainty and reliability,
Cracks during earthquakes impair the water-stopping properties of concrete walls, and construction methods using precast concrete panels or sheet piles were unable to obtain sufficient water-stopping performance due to contaminants, bentonite, etc. being trapped in the joints.
この発明は、施工が容易であつて施工費が安価
となり、且つ止水の確実性、信頼性の高い遮水壁
を構築可能な地中連続遮水壁工法を提供すること
を目的とする。 An object of the present invention is to provide an underground continuous impermeable wall construction method that is easy to construct, has low construction cost, and can construct an impermeable wall that is highly reliable and reliable in stopping water.
この発明にかかる地中連続遮水壁工法は、複数
本の鋼製の支柱間に張設した遮水シートを使用す
るものである。
The continuous underground impermeable wall construction method according to the present invention uses a impermeable sheet stretched between a plurality of steel supports.
地盤に溝を掘削する。この溝内に上記遮水シー
トを配設し、溝を巾方向左右に仕切るようにす
る。溝内に硬化材を注入して泥水固化、或いは溝
内にソイルモルタルを充填し遮水壁を構築する。 Dig a trench in the ground. The above-mentioned water-blocking sheet is disposed within this groove so as to partition the groove into left and right sides in the width direction. A hardening material is injected into the groove to solidify the muddy water, or a water-blocking wall is constructed by filling the groove with soil mortar.
溝掘削、遮水シート配設、泥水固化という簡易
な施工によつて構築でき、施工費を安価にするこ
とができる。 It can be constructed by simple construction such as trench excavation, installation of water-shielding sheets, and solidification of muddy water, and construction costs can be reduced.
地震によつてクラツクが生ずる等があつても遮
水シートによつて止水性が損なわれることがな
い。 Even if cracks occur due to an earthquake, the water-stopping properties of the water-blocking sheet will not be impaired.
以下、図に示す一実施例に基づきこの発明を詳
細に説明する。
Hereinafter, the present invention will be explained in detail based on an embodiment shown in the drawings.
(1) 溝掘削
地盤に溝１を掘削する。溝１の巾は大きくな
くともよく、その分施工が大がかりとならな
い。溝１の掘削にはオーガ等を使用し、溝１内
には安定液として泥水２を充填する。また溝壁
が強固な場合は泥水２を使用せずともよい。(1) Trench excavation Dig trench 1 in the ground. The width of the groove 1 does not need to be large, so the construction does not require a large scale. An auger or the like is used to excavate the groove 1, and the groove 1 is filled with muddy water 2 as a stabilizing liquid. Further, if the groove wall is strong, the muddy water 2 may not be used.
(2) 遮水シート
遮水シート３はポリエチレンシート等が採用
でき、鋼製の複数本の支柱４に張設する。(2) Water-shielding sheet The water-shielding sheet 3 can be made of polyethylene sheet, etc., and is stretched over multiple steel supports 4.
支柱４としてはＨ型鋼等が採用できる。支柱
４は一枚の遮水シート３の左右いずれか一端近
くに固着してある。遮水シート３の左右端には
全長にフアスナー５，５が取付けてある。また
遮水シート３の支柱４近くにはポケツト状のパ
ツカー６が縫込んである。以上のような複数本
の遮水シート３がフアスナー５，５によつて連
続的に繋いである。 As the support 4, H-type steel or the like can be used. The support column 4 is fixed near one end of one of the right and left ends of one sheet of water-shielding sheet 3. Fasteners 5, 5 are attached to the left and right ends of the water-shielding sheet 3 over the entire length. Further, a pocket-shaped packer 6 is sewn into the water-shielding sheet 3 near the pillar 4. A plurality of water-shielding sheets 3 as described above are continuously connected by fasteners 5, 5.
(3) 遮水シートの配設（第１図）
遮水シート３を折畳んだままで支柱４ととも
に溝１内に降下する。掘削した溝１の長さに応
じて所要枚数の遮水シート３を張出して、溝１
を巾方向に仕切るよう配設する。(3) Arranging the water-shielding sheet (Fig. 1) With the water-shielding sheet 3 folded, lower it into the groove 1 together with the pillar 4. Depending on the length of the trench 1 that has been excavated, the required number of water-blocking sheets 3 are stretched out, and the trench 1 is
Arranged so that it is partitioned in the width direction.
また第２図に示すように遮水シート３をフア
スナー５，５によつて更に継ぎ足す。 Further, as shown in FIG. 2, the water-blocking sheet 3 is further joined with fasteners 5, 5.
(4) 泥水固化
配設した遮水シート３のパツカー６内にエア
若しくは水を注入して、溝１を仕切る。このパ
ツカー６によつて仕切られた溝１内に硬化材を
注入して泥水２を固化する。硬化材としてはモ
ルタル、コンクリート等が使用できる。泥水２
が固化して遮水シート３を内側に挟んだ遮水壁
が完成する。(4) Solidification of muddy water Air or water is injected into the tanker 6 of the installed water-blocking sheet 3 to partition the groove 1. A hardening material is injected into the groove 1 partitioned by the packer 6 to solidify the muddy water 2. Mortar, concrete, etc. can be used as the hardening material. muddy water 2
solidifies, and a water-shielding wall with the water-shielding sheet 3 sandwiched inside is completed.
その後溝１掘削を進めるとともに遮水シート
３を随時溝１内に配設し、泥水固化によつて遮
水壁を続けて構築する。また泥水を使用しない
場合には、溝内にソイルモルタルを充填しても
よい。 Thereafter, as the trench 1 is excavated, a water-blocking sheet 3 is placed in the trench 1 as needed, and a water-blocking wall is successively constructed by solidifying the muddy water. In addition, if muddy water is not used, soil mortar may be filled in the groove.
この発明は以上のような鋼製を有し、以下のよ
うな効果を得ることができる。
This invention has the above-mentioned steel construction, and can obtain the following effects.
イ 溝を掘削し、遮水シートを配設し、泥水を固
化、或いはソイルモルタルを充填するだけであ
るため、施工は容易となり、大がかりな施工は
不要で施工費は安価となる。(b) Construction is easy, as it only involves digging a trench, installing a water-blocking sheet, solidifying muddy water, or filling it with soil mortar, and there is no need for large-scale construction, resulting in low construction costs.
ロ 完成した遮水壁は内側に遮水シートを挟み込
むために、地震等によるクラツクが発生しても
止水が損なわれることがなく、確実性、信頼性
が高くなる。(b) Since the completed water-shielding wall has a water-shielding sheet sandwiched inside, water-stopping will not be impaired even if cracks occur due to earthquakes, etc., and reliability and reliability will be high.
ハ 泥水を固化、或いはソイルモルタルを充填し
て構築するため、地中壁全体を均一な地中壁と
することができる。また例え強度の低下する部
分が生じても上記のように遮水シートによつて
止水性は確保される。C) Because the wall is constructed by solidifying muddy water or filling it with soil mortar, the entire underground wall can be made into a uniform underground wall. Furthermore, even if there is a portion where the strength is reduced, water-stopping properties are ensured by the water-blocking sheet as described above.
ニ 鋼製の支柱によつて遮水シートを支えるた
め、シートがたわむ恐れがないとともに支柱に
よつて遮水壁が補強される。D. Since the water-shielding sheet is supported by steel columns, there is no risk of the sheet bending, and the water-shielding wall is reinforced by the columns.
第１図〜第３図はこの発明にかかる地中連続遮
水壁工法の一実施例の施工順序を示すもので
（）は平面図、（）は縦断面図である。
１……溝、２……泥水、３……遮水シート、４
……支柱、５……フアスナー、６……パツカー。
1 to 3 show the construction order of one embodiment of the underground continuous impermeable wall construction method according to the present invention, in which () is a plan view and () is a longitudinal sectional view. 1...Gutter, 2...Muddy water, 3...Waterproof sheet, 4
...Strut, 5...Fassner, 6...Patzker.
Claims (1)
張設した遮水シートを溝内に降下し、溝を巾方向
左右に仕切るよう溝内に配設し、溝内に硬化材を
注入して泥水固化、或いは溝内にソイルモルタル
を充填し遮水壁を構築することを特徴とする地中
連続遮水壁工法。1 A trench is excavated in the ground, a water-blocking sheet stretched between multiple steel supports is lowered into the trench, and a hardened material is placed inside the trench to divide the trench into left and right sides in the width direction. An underground continuous impermeable wall construction method characterized by injecting soil to solidify mud, or by filling a trench with soil mortar to construct an impermeable wall.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13949787A JPS63304821A (en) | 1987-06-03 | 1987-06-03 | Construction work of underground continuous cut-off wall |
| US07/196,617 US4909674A (en) | 1987-05-28 | 1988-05-19 | Underground continuous impervious wall and method for installing same |
| US07/460,044 US5022792A (en) | 1987-05-28 | 1990-01-02 | Undergrond continuous impervious wall and method for installing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13949787A JPS63304821A (en) | 1987-06-03 | 1987-06-03 | Construction work of underground continuous cut-off wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63304821A JPS63304821A (en) | 1988-12-13 |
| JPH0433326B2 true JPH0433326B2 (en) | 1992-06-02 |
Family
ID=15246651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13949787A Granted JPS63304821A (en) | 1987-05-28 | 1987-06-03 | Construction work of underground continuous cut-off wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63304821A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05163720A (en) * | 1991-12-18 | 1993-06-29 | Fusao Sakano | Underground wall and construction of continuous underground wall |
| JPH06341140A (en) * | 1993-02-04 | 1994-12-13 | Fusao Sakano | Construction method by which column-wall holes are bored within approximate line by 10-700mm from boundary by intermittent work and continuous wall, connection wall, butt-joint wall, superposed wall, and cut-off wall are erected by use of the hole, and these walls |
| JPH06341141A (en) * | 1993-02-17 | 1994-12-13 | Fusao Sakano | Construction method of underground earth retaining wall by bored holes excavated in the ground within line separated from boundary by 500mm, and various walls like joint wall, connection wall, butt-joint wall, continuousline wall, superposed wall, cut-off wall by use the method |
-
1987
- 1987-06-03 JP JP13949787A patent/JPS63304821A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63304821A (en) | 1988-12-13 |
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