JP2000087385A - Cut-off wall partition device with valve and its installation method - Google Patents
Cut-off wall partition device with valve and its installation methodInfo
- Publication number
- JP2000087385A JP2000087385A JP10261344A JP26134498A JP2000087385A JP 2000087385 A JP2000087385 A JP 2000087385A JP 10261344 A JP10261344 A JP 10261344A JP 26134498 A JP26134498 A JP 26134498A JP 2000087385 A JP2000087385 A JP 2000087385A
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- water
- valve
- wall
- blocking wall
- opening
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、バルブ付止水壁仕
切装置及びその設置法に関し、特に、掘削後の孔壁を洗
浄し、壁内の掘削時には揚水井戸を形成して稼動し、工
事完工後は所望の地下水流動量を確保できるように構成
したバルブ付止水壁仕切装置及びその設置法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-blocking wall partitioning device with a valve and a method of installing the same. The present invention relates to a water blocking wall partitioning device with a valve configured to ensure a desired amount of groundwater flow after completion and a method of installing the same.
【０００２】[0002]
【従来の技術】構造物を構築するための地盤構造は、地
下水が浸透し易い洪積層や沖積層等の透水層と低透水性
土層から構成されている。そして、透水層に多量の地下
水を含んでいる帯水層の地下水は、図１３に示すよう
に、一定の勾配を持った水流４０として流動している。
図１４に示すように、鉄道、道路など施工区間の長い構
造物が建設され、その構築が地下に及んで地下構造物５
０を建設する際には、止水性が高い、工期が短い、廉価
で壁深を深くできる等の理由から、止水壁５１を適用す
ることが多い。止水壁は遮水壁であるために、地下構造
物５０に適用すると、図１４のように、地盤中の帯水層
４１を遮断して地下水流４０を阻害することから、止水
壁５１の上流側では、地下水の水位が上昇して、漏水、
既設構造物の浮き上がり等の問題が発生し、下流側では
逆に地下水位の低下が発生して、周辺の井戸等に井戸枯
れ、地盤沈下等の障害を発生させていた。2. Description of the Related Art The ground structure for constructing a structure is composed of a permeable layer such as a diluvial or an alluvial layer, which easily penetrates groundwater, and a low permeable soil layer. Then, the groundwater in the aquifer containing a large amount of groundwater in the permeable layer flows as a water stream 40 having a constant gradient, as shown in FIG.
As shown in FIG. 14, a structure having a long construction section such as a railway and a road is constructed, and the construction extends to the underground, and the underground structure 5 is constructed.
When constructing the zero, the water-stop wall 51 is often applied because of its high water-stopping property, short construction period, low cost, and the ability to deepen the wall depth. Since the water blocking wall is a water blocking wall, when applied to the underground structure 50, the water blocking wall 51 blocks the aquifer 41 in the ground and obstructs the groundwater flow 40 as shown in FIG. Upstream, the groundwater level rises,
Problems such as the lifting of existing structures have occurred, and consequently, the groundwater level has dropped on the downstream side, causing wells in the surroundings to wither, causing problems such as land subsidence.
【０００３】一方、地下構造物の施工に必要な壁内の掘
削工事においては、図１５に示すように、掘削側に揚水
井戸４２を設けて地下水の水位４３を下げながら掘削を
行うことが多かった。このような井戸４２を設置するた
めの用地の確保や多大の設置費用は建設コストの増大を
招いてきた。特に、井戸を掘削部内に設置する場合に
は、掘削の底盤に井戸の設置を行うための処置が必要に
なり、工事の進行上からは障害になっていた。又、上記
した環境上の障害を解消するために、工事終了後に止水
壁を撤去するのには、撤去に必要な作業スペース並びに
多くの費用を要し、しかも完全に撤去するのは不可能で
あり、部分的に壊すことで対処してきた。しかし、除去
が不完全の場合にはさらなる環境問題に発展しかねない
状況があった。On the other hand, in excavation work inside a wall necessary for construction of an underground structure, as shown in FIG. 15, a pumping well 42 is provided on the excavation side, and excavation is often performed while lowering the water level 43 of groundwater. Was. The securing of land for installing such a well 42 and the large installation costs have led to an increase in construction costs. In particular, when the well is installed in the excavation part, a measure for installing the well in the bottom of the excavation is required, which is an obstacle to the progress of the construction. Also, to remove the water barrier after the construction is completed to eliminate the above-mentioned environmental obstacles, the work space required for removal and a lot of expenses are required, and it is impossible to completely remove it. It has been dealt with by partially breaking it. However, there were situations where incomplete removal could lead to further environmental problems.
【０００４】このような事態を避けるために、透水層部
位の止水壁を工事完了後に積極的に破壊したり、図１６
に示すように、遮水壁を開口して地下水を導水する施工
法が提案されている。しかし、この施工法では、上流側
に設置される壁面５２からの導水パイプ５３は横方向に
限られた範囲にしか開口できないために、躯体部導水管
５４と下流側導水パイプ５５を通じて流れる人工的な導
水は、必要としている全ての地下水流動量を確保するこ
とが困難であり、結果的に下流側の水位は図示のように
若干の回復はあっても、従来の水位から低下したままの
状態になっていることが多かった。[0004] In order to avoid such a situation, the water blocking wall at the permeable layer portion is actively destroyed after the construction is completed.
As shown in (1), there has been proposed a construction method in which an impermeable wall is opened to conduct groundwater. However, in this construction method, since the water pipe 53 from the wall surface 52 installed on the upstream side can be opened only in a limited range in the lateral direction, the artificial water flowing through the skeleton water pipe 54 and the downstream water pipe 55 is not used. It is difficult to secure all the necessary groundwater flow rate for the proper water supply, and as a result, the water level on the downstream side is slightly lower than the conventional water level, although there is some recovery as shown in the figure. Often it was.
【０００５】そこで、図１７に示すような止水壁の一部
を全長にわたって砂利等と置換してから、その管をバイ
パス管で接続する方法が提案されている。その方法の概
要は、１例としては、特に図示していないが、止水壁６
０のセメントミルクが硬化する以前に、止水壁の全長に
わたってチューブが装着された鋼管をその地山側に沈
め、このチューブに水等を送って膨らませセメントミル
クを押しのけて止水壁６０と同型の空間を確保するもの
であり(特願平６−１７５８５号)、あるいは図１７
（ａ）に見られるように、応力材としてのＨ型鋼６１に
取付口６２を取り付けておいて、セメントミルクが硬化
する以前に、止水壁６０の全長にわたってこれを配置
し、次いでＨ型鋼６１の地山側に、特製したスラリー押
退装置を用いてＨ型鋼６１の全長にわたってチューブを
建て込み、これを膨らませてＨ型鋼の地山側に空間６３
を形成している(特願平７−８６６０７号)。Therefore, a method has been proposed in which a part of the water stop wall as shown in FIG. 17 is replaced with gravel or the like over the entire length, and the pipe is connected by a bypass pipe. Although the outline of the method is not specifically shown as an example, the water stop wall 6 is not shown.
Before the cement milk of No. 0 hardens, a steel pipe with a tube attached over the entire length of the water stop wall is sunk to the ground side, and water and the like are sent to the tube to inflate the tube and the cement milk is pushed away to remove the same type of water stop wall 60. This is to secure space (Japanese Patent Application No. Hei 6-17585) or to FIG.
As shown in (a), an attachment port 62 is attached to an H-shaped steel 61 as a stress material, and is disposed over the entire length of the water blocking wall 60 before the cement milk is hardened. A tube is erected over the entire length of the H-shaped steel 61 using a specially designed slurry pushing and retracting device on the ground side of the H-shaped steel.
(Japanese Patent Application No. 7-86607).
【０００６】次いで、Ｈ型鋼６１の地山側には、図１７
（ｂ）に見られるように、形成された空間６３に砂利６
４等を充填して透水状態を形成している。一方で、Ｈ型
鋼６１の取付口６２に貫通孔形成装置６５を装備して掘
削側と地山側とを連通させる貫通孔を設け、これに図示
していないバイパス管を取り付けて、止水壁６０の上流
側と下流側とを連通している。Next, on the ground side of the H-section steel 61, FIG.
As shown in (b), the gravel 6 is formed in the formed space 63.
4 etc. are filled to form a water permeable state. On the other hand, a through-hole forming device 65 is provided at the mounting opening 62 of the H-section steel 61 to provide a through-hole for communicating the excavation side and the ground side, and a bypass pipe (not shown) is attached to the through-hole to attach the water blocking wall 60. The upstream and downstream sides are connected.
【０００７】しかし、この方法はバイパス管を接続する
ための止水壁にチューブを沈めた最深部から地表に至る
全長にわたって空間を形成し、この空間全体に砂利を充
填させているために、集水部材として無用になること
や、不必要な深さの地盤の地下水に影響を与える恐れが
あった。However, in this method, a space is formed over the entire length from the deepest part where the tube is submerged to the surface of the ground to the water stop wall for connecting the bypass pipe, and the entire space is filled with gravel. There is a possibility that the water will not be used as a water member or that the groundwater at an unnecessary depth will be affected.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、止水壁にバ
ルブ付止水壁仕切装置を配備して地中透水部の孔壁及び
フイルターの洗浄を行い、壁内の掘削工事中には、揚水
井戸を形成して掘削地盤の地下水処理を行って、工事完
了後は止水壁の上流側と下流側の水位を同等に保つのに
充分な人工導水や機能維持のための洗浄を確立する止水
壁及びその施工法の提供を目的にしている。SUMMARY OF THE INVENTION In the present invention, a water blocking wall partitioning device with a valve is provided on a water blocking wall to clean a hole wall and a filter of an underground water permeable section, and during excavation work inside the wall. Establish a pumping well to treat groundwater in the excavated ground, and after construction is completed, establish sufficient artificial water conveyance to maintain the water level on the upstream and downstream sides of the cutoff wall equal and cleaning to maintain the function. The purpose is to provide a waterproof wall and its construction method.
【０００９】[0009]
【課題を解決するための手段】本発明によるバルブ付止
水壁仕切装置は、地中透水部に建設する構造物の上流側
と下流側に設置される止水壁の所定位置に設置され、止
水壁の内外側に形成されている掘削地山に全面的に当接
する２つの相対峙するフィルター付開口体をバルブ付通
水管で接続して止水壁の上流側と下流側とを通水可能に
構成し、さらに、フィルター付開口体の少なくとも一側
に水用開口部を設けて、揚水もしくは地中透水部の孔壁
及びフイルターの洗浄に用い、バルブの開口によって地
下水を導通することを特徴としているので、地中透水部
に止水壁を設ける工事を効率よく、かつ周辺の自然環境
を何ら損ねることなく実施できる。A water-blocking wall partitioning device with a valve according to the present invention is installed at predetermined positions on water-blocking walls installed upstream and downstream of a structure to be constructed in an underground water permeable section. Two opposed filter-equipped openings that are in full contact with the excavation ground formed on the inner and outer sides of the water stop wall are connected by a water pipe with a valve so that the upstream side and the downstream side of the water stop wall pass through. A water opening is provided, and a water opening is provided on at least one side of the filter-equipped opening body, and used for pumping or for cleaning a hole wall and a filter of the underground water permeation part, and ground water is conducted through an opening of a valve. Therefore, the construction of the water blocking wall in the underground permeable portion can be performed efficiently and without impairing the surrounding natural environment.
【００１０】又、本発明によるバルブ付止水壁仕切装置
の設置法は、地中透水部に建設する構造物の上流側と下
流側に設置される止水壁を構築しながら、その固化以前
にバルブ付止水壁仕切装置を止水壁に配備し、固化後に
バルブ付止水壁仕切装置のバルブと水用開口部とを施工
状態に対応させて適宜操作することを基本的特徴にして
おり、具体的には、フィルター付開口体に充填材を充填
したり、バルブ付止水壁仕切装置を凍結し、これを断熱
材で閉塞しておくことを特徴としているので、バルブ付
止水壁仕切装置を止水壁の所定位置に迅速確実に配置で
きる。The method for installing a water-blocking wall partitioning device with a valve according to the present invention is to construct a water-blocking wall to be installed upstream and downstream of a structure to be constructed in an underground water-permeable section and to solidify the water-tight wall before the solidification. The basic feature is that a water blocking wall partitioning device with a valve is installed on the water blocking wall, and after solidification, the valve and water opening of the water blocking wall partitioning device with a valve are appropriately operated according to the construction state. Specifically, since the opening with filter is filled with a filler or the water blocking wall partitioning device with a valve is frozen and closed with a heat insulating material, the water blocking with a valve is provided. The wall partitioning device can be quickly and reliably arranged at a predetermined position on the water stop wall.
【００１１】[0011]
【発明の実施の形態】図１は、本発明によるバルブ付止
水壁仕切装置の一部を中心部分で断面にした側面図であ
り、（ａ）は掘削孔内に挿入以前の状態、(ｂ)は孔内で
拡張した状態を示している。バルブ付止水壁仕切装置1
は、互いに対峙する2つのフィルター付開口体２、2から
構成されており、両フィルター付開口体間は所定の間隔
で配置した伸縮可能なバルブ付通水管３及びジャッキ4
で接続している。フィルター付開口体2は、掘削孔内の
仕切り板を構成する保護用の鋼殻５で構成されている。
鋼殻５は、図示のように内面に開口部６を形成し開口部
６の前面はフィルター7で覆っており、掘削孔の孔壁か
ら地下水と同時に混入してくる土壌類を阻止して開口部
６等に目詰まりが生じないようにしている。従って、透
水層からの地下水はバルブ付通水管３を通じて反対側の
フィルター付開口体２に支障なく流通させることができ
る。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view in which a part of a water blocking wall partitioning device with a valve according to the present invention is sectioned at a central portion, (a) shows a state before being inserted into a drilling hole, b) shows a state expanded in the hole. Water blocking wall partitioning device with valve 1
Is composed of two filter-equipped openings 2 facing each other, and a telescopic valve-equipped water pipe 3 and a jack 4 arranged at a predetermined interval between the two filter-equipped openings.
Connected with. The filter-equipped opening 2 is formed of a protective steel shell 5 that constitutes a partition plate in the borehole.
The steel shell 5 has an opening 6 formed on the inner surface as shown in the drawing, and the front surface of the opening 6 is covered with a filter 7 to prevent soils mixed with groundwater from the hole wall of the excavation hole. Clogging does not occur in the portion 6 and the like. Therefore, the groundwater from the permeable layer can be circulated to the filter-equipped opening 2 through the valve-provided water pipe 3 without any problem.
【００１２】フィルター付開口体２には、鋼殻５の開口
部両側に２本の水用開口部８を配置しており、図示して
いないポンプによって地下水を揚水したり、ポンプから
の真水をジェット水流にしてフイルター7及び掘削孔の
地山を洗浄できるようにしている。バルブ付止水壁仕切
装置１は、製造を完了して保管し、掘削孔に挿入するま
では、図1（ａ）に示すようにバルブ付通水管３及びジ
ャッキ４を縮小させてあり、掘削孔に設置してからバル
ブ付通水管３及びジャッキ４を伸長せると、図1（ｂ）
に示すように拡張して掘削孔の地山に当接し孔壁を全面
的に覆った状態を形成する。バルブ付止水壁仕切装置１
の長さは、本実施の形態では、止水壁の全長にわたるよ
うに図示しているが、実用上は止水壁の全長にわたるも
のでなく、地下構造物を構築する地盤において地下水の
集水や注水が最も効率よく達成できる透水層、特に帯水
層に関連付けてその長さを決定するものであり、その長
さを短縮することによる工事コストの低減についても大
いに向上している。The filter-equipped opening 2 is provided with two water openings 8 on both sides of the opening of the steel shell 5 so that groundwater is pumped by a pump (not shown) or fresh water from the pump is supplied. A jet stream is used to wash the ground of the filter 7 and the excavation hole. As shown in FIG. 1 (a), the water blocking wall partitioning device 1 with the valve and the jack 4 are reduced as shown in FIG. When the water pipe 3 with a valve and the jack 4 are extended after installation in the hole, FIG. 1 (b)
As shown in (1), a state is formed in which the hole is expanded and abuts against the ground of the excavation hole to completely cover the hole wall. Water blocking wall partitioning device with valve 1
In the present embodiment, the length is shown to extend over the entire length of the water blocking wall, but practically does not extend over the entire length of the water blocking wall, and the groundwater is collected on the ground for constructing the underground structure. The length is determined in relation to the permeable layer that can achieve the most efficient water injection, especially the aquifer, and the reduction in the construction cost by shortening the length is greatly improved.
【００１３】図２は、図１−矢印の断面図でバルブ
付通水管3を拡大して示しており、図２（ａ）は、バル
ブ付通水管を示す平面図であり、図２（ｂ）は同側面図
である。図示のように、バルブ付通水管３は、２つのダ
クト管９、９を水平部分に設けた伸縮可能な結合部１０
で接続しており、一方のダクト管９にはバルブ１１を装
備している。上述のようにフィルター付開口体２は、鋼
殻5の開口部６の全面をフイルター７で覆っており、ダ
クト管９の両側には水用開口部８、８が配備されてい
る。水用開口部８は、巻き線型のスクリーンのように円
筒状であって、円筒体の周囲には多数の間隙が形成され
ている。従って、水用開口部８は、接続したポンプによ
って上記鋼殻5の開口部６やフイルター７及び掘削孔の
孔壁に対して、スクリーン状になった間隙を通じて地下
水の揚水、真水の注水を適宜実施できるようになってい
る。又、鋼殻5の開口部端部１２は、前方に突出した形
状にしてあり、これによって、フイルター等の洗浄時に
高圧のジェット水流によってソイルセメント等の止水壁
材料部分を傷めないようにしている。FIG. 2 is an enlarged view of the water pipe 3 with a valve in a sectional view taken along the arrow in FIG. 1 and FIG. 2 (a) is a plan view showing the water pipe with a valve, and FIG. ) Is the same side view. As shown in the drawing, the water pipe 3 with a valve is provided with an extendable joint 10 having two duct pipes 9 and 9 provided in a horizontal portion.
, And one duct pipe 9 is provided with a valve 11. As described above, the filter-equipped opening 2 covers the entire surface of the opening 6 of the steel shell 5 with the filter 7, and water openings 8, 8 are provided on both sides of the duct tube 9. The water opening 8 has a cylindrical shape like a wound screen, and a large number of gaps are formed around the cylindrical body. Therefore, the water opening 8 is connected to the opening 6 of the steel shell 5, the filter 7 and the hole wall of the excavation hole by the connected pump to appropriately pump up groundwater and inject fresh water through a screen-shaped gap. It can be implemented. The opening end 12 of the steel shell 5 has a shape protruding forward, so that a high-pressure jet stream of water does not damage a water-stop wall material portion such as soil cement when washing a filter or the like. I have.
【００１４】図３は、図１−矢印の断面図でジャッ
キ４を拡大して示しており、図３（ａ）は、ジャッキを
示す平面図であり、図３（ｂ）は同側面図である。ジャ
ッキ４は、鋼殻5の背面に設けられたジャッキ受口に嵌
合して配置されており、フィルター付開口体2相互間の
拡大、縮小を支障無く実施できる数と間隔でバルブ付止
水壁仕切装置1の適当箇所に設けられている。ジャッキ
４は、地上からの遠隔操作で掘削孔にバルブ付止水壁仕
切装置１が設置されてから伸長し、２つのフィルター付
開口体２、２を拡張してバルブ付通水管３を伸長させ
て、フィルター付開口体２のフイルター７を掘削孔の地
山に当接して孔壁を全面的に覆うように作動する。FIG. 3 is an enlarged cross-sectional view of the jack 4 in FIG. 1A. FIG. 3A is a plan view showing the jack, and FIG. 3B is a side view thereof. is there. The jacks 4 are arranged so as to be fitted into jack receptacles provided on the back surface of the steel shell 5. It is provided at an appropriate place of the wall partitioning device 1. The jack 4 is extended after the water blocking wall partitioning device 1 with the valve is installed in the excavation hole by remote control from the ground, and the opening 2 with the filter 2 is expanded to extend the water pipe 3 with the valve. Then, the filter 7 of the filter-equipped opening 2 is brought into contact with the ground of the excavation hole to operate so as to entirely cover the hole wall.
【００１５】図４〜６は、本発明によるバルブ付止水壁
仕切装置を止水壁に適用する実施の形態である。図４に
示す実施の形態は、地山に掘削した止水壁の掘削孔壁を
洗浄する例であり、図４（ａ）は側面図、図４（ｂ）は
図４（ａ）における各矢印に対応して表示する断面図で
ある。バルブ付止水壁仕切装置1は地山１３に掘削した
止水壁１４、１４に設置され、次いでこれを拡張して、
掘削孔１５の孔壁1６にフィルター付開口体２の開口部6
を全面的に当接させることで、鋼殻５の仕切機能によっ
て地山の透水層に密接して水流を画している。この１連
の作業はジャッキ４を操作して行うことになるが、洗浄
作業に際してのバルブ付通水管3のバルブ１１は、閉鎖
させた状態で対応することになる。FIGS. 4 to 6 show an embodiment in which the water blocking wall partitioning device with a valve according to the present invention is applied to a water blocking wall. The embodiment shown in FIG. 4 is an example in which the wall of the water blocking wall excavated in the ground is washed, FIG. 4 (a) is a side view, and FIG. It is sectional drawing displayed corresponding to an arrow. The water-blocking wall partitioning device 1 with a valve is installed on the water-blocking walls 14, 14 excavated in the ground 13, and then expanded,
The opening 6 of the filter-equipped opening body 2 is formed in the hole wall 16 of the borehole 15.
Is brought into close contact with the permeable layer of the ground by the partition function of the steel shell 5 to form a water flow. This series of operations is performed by operating the jack 4, but the valve 11 of the valved water pipe 3 during the cleaning operation is handled in a closed state.
【００１６】掘削孔壁を洗浄する手段の第１は、図にお
いて矢印（イ）−（イ）で示している方法であり、水用
開口部８に図示していない揚水ポンプを接続して実施す
るもので、水用開口部の周辺及び孔壁に付着したり浮遊
して混入散在している不透水性残材を揚水流１７と共に
吸い取って排水と同時に分離して廃棄するものである。
第２の方法は、上記方法とは逆に、接続したポンプを注
水用に作動させるもので、図において矢印（ロ）−
（ロ）で示しているように水用開口部8から高圧の真水
をジェット水流１８にして周辺及び孔壁に吹き付けるこ
とで、フイルターや孔壁に付着している上記不透水性残
材を吹き飛ばして地下水を不透水状態にしている原因を
解消させるものである。The first means for cleaning the borehole wall is a method shown by arrows (a) to (a) in the figure. The method is carried out by connecting a pump (not shown) to the water opening 8. In this method, the impermeable residual material adhering to or floating around the water opening and the hole wall is sucked together with the pumping flow 17 and separated and discarded simultaneously with the drainage.
The second method is to operate the connected pump for water injection, contrary to the above method.
As shown in (b), high-pressure fresh water is jetted from the water opening 8 into the jet water stream 18 and sprayed onto the periphery and the wall of the hole to blow off the impermeable residual material adhering to the filter and the hole wall. To eliminate the cause of groundwater impermeability.
【００１７】第３の方法は、上述した揚水とジェット水
流とを同時に実施する方法である。この方法では、フィ
ルター付開口体２に装備されている2つの水用開口部
８、８の一方をジェット水流用として使用し、他方を揚
水用に使い分けて対応するものであり、不透水性残材の
洗い出しと吸い取りを同じ区域において同時に行うもの
であるから、孔壁等の洗浄をもっとも効率よく実施でき
ることになる。本方法でのポンプの接続は、夫々の水用
開口部８、８に個々にポンプを接続して揚水と注水を行
わせても良いが、1台のポンプを使用して一方の水用開
口部８から注水して不透水性残材の洗い出し、同時に不
透水性残材を他方の水用開口部８から押し出して廃棄し
ても可能であり、他の方法と比較して稼動コストの低減
において有効である。The third method is a method of simultaneously performing the above-described pumping and jet water flow. In this method, one of the two water openings 8 provided in the filter-equipped opening 2 is used for jet water flow, and the other is selectively used for pumping water. Since the washing and sucking of the material are performed simultaneously in the same area, the washing of the hole walls and the like can be performed most efficiently. In connection with the pump in this method, the pumps may be individually connected to the respective water openings 8 and 8 for pumping and injecting water. However, one pump is used by using one pump. It is also possible to wash out the impervious residual material by pouring water from the part 8 and simultaneously extrude the impervious residual material through the other water opening 8 and discard it, thereby reducing operating costs as compared with other methods. It is effective in.
【００１８】さらに、上流側の止水壁にバルブ付止水壁
仕切装置１を設置し、バルブ付通水管３のバルブ１１を
閉じて止水壁内側の水用開口部８に揚水ポンプを接続し
ておき、下流側の止水壁に設置したバルブ付止水壁仕切
装置１のバルブ１１も閉じて止水壁内側の水用開口部８
に注水ポンプを接続してポンプを稼動させることでも洗
浄ができる。この場合の洗浄は、上流側に設置した水用
開口部８のフイルター７に対しては逆洗を行い、下流側
に設置の水用開口部８のフイルター７には水用開口部８
から真水をジェット流にして噴出させての洗浄を行うも
のであるが、この他に止水壁内の地山における帯水層の
洗浄も合わせて行うことができるものである。以上のよ
うに、本発明によるバルブ付止水壁仕切装置の設置は、
バルブ付通水管が備えているバルブの開閉とポンプを接
続する水用開口部の選択とを組み合わせることによって
上述した洗浄以外の各種洗浄が可能である。Further, a water blocking wall partitioning device 1 with a valve is installed on the water blocking wall on the upstream side, the valve 11 of the water pipe 3 with a valve is closed, and a water pump is connected to the water opening 8 inside the water blocking wall. In addition, the valve 11 of the water stop wall partitioning device 1 with the valve installed on the water stop wall on the downstream side is also closed and the water opening 8 inside the water stop wall is closed.
Cleaning can also be performed by connecting a water injection pump to the pump and operating the pump. In this case, backwashing is performed on the filter 7 of the water opening 8 installed on the upstream side, and the water opening 8 is provided on the filter 7 of the water opening 8 installed on the downstream side.
Washing is performed by jetting fresh water into a jet stream, and washing of the aquifer in the ground in the water blocking wall can also be performed. As described above, the installation of the water blocking wall partition device with a valve according to the present invention,
Various cleanings other than the above-described cleaning can be performed by combining the opening and closing of the valve provided in the water pipe with a valve and the selection of the water opening for connecting the pump.
【００１９】上述したように、本発明によるバルブ付止
水壁仕切装置を設置した止水壁では、以降の工事に先だ
って掘削孔壁の洗浄を実施できることから、全体工事の
施工精度を向上させることが確保される。さらに、工事
完成後においても、止水壁に設けた各バルブ付止水壁仕
切装置のフィルターが設置時のソイルセメントや設置後
の流水中に混ざっている塵埃によって目詰まりを起こし
ても、上記のように水用開口部を積極的に稼動させて、
洗浄によって目詰まりさせている塵埃をフィルターから
除去して集水や注水効率を低下させない働きを発揮でき
るもので、止水壁の維持管理面で有効に作用することに
なる。As described above, in the water stop wall provided with the water stop wall partitioning device with a valve according to the present invention, since the excavation hole wall can be washed before the subsequent work, the construction accuracy of the whole work can be improved. Is secured. Furthermore, even after completion of the construction, even if the filter of the water stop wall partitioning device with valves provided on the water stop wall is clogged by dust mixed in the soil cement at the time of installation or running water after the installation, Actively operate the water opening as shown in
Dust that is clogged by washing can be removed from the filter to prevent water collection and water injection efficiency from deteriorating, which effectively acts on the maintenance and management of the water blocking wall.
【００２０】図５に示す実施の形態は、止水壁内側を掘
削施工する際に地下水処理を行う揚水井戸を兼用する例
であり、図５（ａ）は止水壁に設けたバルブ付止水壁仕
切装置の側面図、図５（ｂ）は断面図である。バルブ付
止水壁仕切装置1を地山１３に掘削した止水壁１４に設
置し、次いでこれを拡張して、フィルター付開口体2の
開口部6を地山１３及び止水壁内側の地山19に形成され
た掘削孔の孔壁1６に全面的に当接させている。この１
連の作業はジャッキ4を操作して行うことになるが、止
水壁１４、１４の透水部位に設置されたバルブ付止水壁
仕切装置１は、バルブ付通水管3のバルブ11を閉鎖した
状態にし、選択稼動させる水用開口部８は止水壁１４の
内側にある掘削地山１９に位置するものが使用される。The embodiment shown in FIG. 5 is an example in which a pumping well for performing groundwater treatment is also used when excavating the inside of a water stop wall. FIG. 5 (a) shows a stop provided with a valve provided on the water stop wall. FIG. 5B is a cross-sectional view of the water wall partition device. The water-blocking wall partitioning device 1 with a valve is installed on the water-blocking wall 14 excavated in the ground 13, and then expanded, so that the opening 6 of the filter-equipped opening 2 is connected to the ground 13 and the ground inside the water-blocking wall. It is entirely in contact with the hole wall 16 of the excavation hole formed in the mountain 19. This one
The reaming operation is performed by operating the jack 4, but the water blocking wall partitioning device 1 with valves installed at the water permeable portions of the water blocking walls 14, 14 closes the valve 11 of the water pipe 3 with valve. The water opening 8 to be put into a state and selectively operated is one that is located at the excavation ground 19 inside the water stop wall 14.
【００２１】壁内を掘削施工する時には、水用開口部８
に図示していない揚水ポンプを接続して、バルブ１１を
閉めた状態でポンプを作動させ矢印の水流２０として揚
水し、地下水位２１を下げることで工事の遂行に合わせ
た地下水処理を可能にしている。掘削側への井戸の設置
は、掘削底盤への処置や揚水ポンプの設置等に多くの設
置コストを要していたために、問題視されながらも適切
な解決策がなかったが、上記のようにバルブ付止水壁仕
切装置１を止水壁１４に用いると掘削井戸を省略するこ
とができるので、大幅なコストダウンを図ることができ
る。When excavating the inside of the wall, the water opening 8
Is connected to a pump not shown in the figure, the pump is operated with the valve 11 closed, the water is pumped as the water flow 20 indicated by the arrow, and the groundwater level 21 is lowered to enable groundwater treatment in accordance with the execution of the construction. I have. Although the installation of a well on the excavation side required a lot of installation costs for the treatment of the excavation bottom and the installation of a pump, etc., there was no appropriate solution even though it was regarded as a problem. If the water-blocking wall partitioning device 1 with a valve is used for the water-blocking wall 14, drilling wells can be omitted, so that significant cost reduction can be achieved.
【００２２】図６に示す実施の形態は、地下構造物を完
成した後に地下水の流通を再現させる例であり、図６
（ａ）は止水壁に設置のバルブ付止水壁仕切装置の側面
図、図６（ｂ）は断面図である。本実施の形態では、バ
ルブ付止水壁仕切装置１を止水壁１４に設置し、これを
拡張してフィルター付開口体２の開口部6を地山１３、
１９に形成された掘削孔の孔壁１６に全面的に当接させ
ている。この1連の作業はジャッキ4を操作して行うこと
になるが、止水壁内側の地山１９に地下構造物２２の構
築を完了した後に、バルブ付通水管３のバルブ１１を開
口させて対応することになる。The embodiment shown in FIG. 6 is an example in which the flow of groundwater is reproduced after the underground structure is completed.
(A) is a side view of the water stop wall partitioning device with a valve installed in the water stop wall, and FIG. 6 (b) is a sectional view. In the present embodiment, the water blocking wall partitioning device 1 with a valve is installed on the water blocking wall 14, which is expanded to make the opening 6 of the filter-equipped opening 2 a ground 13,
The hole 19 is entirely in contact with the hole wall 16 of the excavation hole. This series of operations is performed by operating the jack 4. After the construction of the underground structure 22 is completed in the ground 19 inside the water blocking wall, the valve 11 of the valved water pipe 3 is opened. Will respond.
【００２３】地下構造物完成後の状態では、止水壁によ
って地山１３の帯水層に滞留していた地下水が上流側の
止水壁１４に設置されたバルブ付止水壁仕切装置１の一
方のフイルター付開口体２に設けられた開口部6に矢印
２３のように集水され、バルブ１１が開口しているバル
ブ付通水管3を通って他方のフイルター付開口体２に流
通する。他方のフイルター付開口体２に移動した地下水
は、矢印２４のように止水壁内側の地山１９に注水され
るが、地下水は地山１９の帯水層を通って、地下構造物
の下流側に形成されている止水壁１４に設置されたバル
ブ付止水壁仕切装置１の一方のフイルター付開口体２に
設けられた開口部６に矢印２５のように集水され、以下
上記のバルブ付止水壁仕切装置1と同様に、バルブ付通
水管３を通って他方のフイルター付開口体２に移動し、
地下水は矢印２６のように下流側の地山1３に注水され
る。In the state after the completion of the underground structure, the groundwater that has been retained in the aquifer of the ground 13 by the water stop wall is replaced by the water stop wall partitioning device 1 with a valve installed on the upstream water stop wall 14. Water is collected at an opening 6 provided in one filter-equipped opening 2 as indicated by an arrow 23, and flows through the valve-equipped water pipe 3 in which the valve 11 is open to the other filter-equipped opening 2. The groundwater that has moved to the other filter-equipped opening 2 is injected into the ground 19 inside the water blocking wall as indicated by an arrow 24, but the groundwater passes through the aquifer of the ground 19 and is downstream of the underground structure. The water is collected as indicated by an arrow 25 in an opening 6 provided in one filter-equipped opening 2 of the water-stop wall partitioning device 1 with a valve installed on the water stop wall 14 formed on the side. As in the case of the water-blocking wall partitioning device 1 with a valve, it moves to the other filter-equipped opening 2 through the valve-provided water pipe 3,
The groundwater is injected into the ground 13 on the downstream side as indicated by an arrow 26.
【００２４】従って、本発明によるバルブ付止水壁仕切
装置を止水壁に設置すると、止水壁を構築することで遮
断して周辺地域に問題を発生させていた地下水流を、止
水壁内の帯水層を通じて流通させることで、地下水流の
流通を再開させることが可能になるから地下水の遮断に
よる環境問題の発生を防ぐことができる。Therefore, when the water blocking wall partitioning device with a valve according to the present invention is installed on the water blocking wall, the groundwater flow which has been blocked by constructing the water blocking wall and causing a problem in the surrounding area can be removed. By circulating through the inner aquifer, it is possible to resume the distribution of the groundwater flow, and thus it is possible to prevent the occurrence of environmental problems due to groundwater interruption.
【００２５】図７〜１２は、本発明によるバルブ付止水
壁仕切装置の止水壁への設置法を説明するための工程図
である。図７は、止水壁の掘削孔に挿入設置する前のバ
ルブ付止水壁仕切装置を中心部分で一部断面にして示す
側面図である。上記説明では、フイルター付開口体２に
おいて鋼殻５が形成する開口部６の内部構造については
空間を形作っているとしてきたが、本実施の形態では、
開口部６とフイルター７で囲まれる空隙を充填材で満た
してある。一般に、掘削直後の孔内は泥水及びソイルセ
メントが充填されており、これらの中には各種の不透水
性材料が含有されているから、フイルター付開口体２の
内部開口部６にもフイルター７を通過して不透水性材料
が侵入して来ることになり、フイルター付開口体２の透
水性低下や揚水井戸の機能低下が危惧される。従って、
開口部６には図８の部分断面図で示すように、不透水性
材料の侵入を防止する手段を施している。FIGS. 7 to 12 are process diagrams for explaining a method of installing the water blocking wall partitioning device with a valve on the water blocking wall according to the present invention. FIG. 7 is a side view showing the water blocking wall partitioning device with a valve in a partial cross section at a center portion before being inserted and installed in the drilling hole of the water blocking wall. In the above description, the internal structure of the opening 6 formed by the steel shell 5 in the filter-attached opening 2 has been described as forming a space, but in the present embodiment,
The space surrounded by the opening 6 and the filter 7 is filled with a filler. In general, the inside of the hole immediately after excavation is filled with muddy water and soil cement, and these contain various impermeable materials. Impervious material will penetrate through the filter, and there is a fear that the water permeability of the filter-equipped opening 2 is reduced and the function of the pumping well is reduced. Therefore,
As shown in the partial cross-sectional view of FIG. 8, the opening 6 is provided with means for preventing impermeable material from entering.
【００２６】図８に示すように、鋼殻５とフイルター７
で形成されている開口部６には、フイルター材２７と充
填材２８とが充填されており、充填材２８によってフイ
ルターを通過して不透水性材料が侵入してくるのを防止
している。フイルター材２７としては、硅砂２号のよう
な細かい塵埃等を通さないろ過機能を備えた材質のもの
が望ましく、市販の材料の中から適宜選択して使用する
ことができる。フイルター材２７の間隙に充填する充填
材２８としては、バルブ付止水壁仕切装置の設置後に除
去できるように氷、寒天等の溶解性材料であることが望
ましく、熱や高圧水で溶解、破壊して飛散する材質のも
のであれば採用可能である。さらに、場合によってはバ
ルブ付止水壁仕切装置全体を凍結して断熱材で閉塞して
おくことでも有効な手段である。As shown in FIG. 8, the steel shell 5 and the filter 7
Is filled with a filter material 27 and a filler 28, and the filler 28 prevents the impermeable material from passing through the filter. The filter material 27 is desirably a material having a filtering function that does not allow fine dust or the like to pass through, such as silica sand No. 2, and can be appropriately selected from commercially available materials and used. The filler 28 to be filled in the gap of the filter material 27 is desirably a soluble material such as ice or agar so that it can be removed after installation of the water blocking wall partitioning device with a valve. Any material can be used as long as the material scatters. Further, in some cases, it is also effective to freeze the entire water blocking wall partitioning device with a valve and close it with a heat insulating material.
【００２７】図９、１０は、止水壁の掘削状態と掘削孔
にバルブ付止水壁仕切装置を挿入する建て込み状態を示
している。掘削孔１５は、図９に示すように、通常の杭
打機３０で実施される。掘削時に掘削孔内の原地盤土に
セメントを注入、攪拌して止水壁の構築が行われるが、
ソイルセメントが固化する以前に、事前に用意してある
バルブ付止水壁仕切装置１を図１０に示すように、クロ
ーラクレーン３１で吊り下げて掘削孔１５に挿入する。
同段階でのバルブ付止水壁仕切装置１は、ジャッキ４を
縮小させた状態にしてあるので、掘削孔１５との間には
十分な間隙３２が存在しており、掘削孔内への建て込み
は円滑に遂行することができる。又、バルブ付止水壁仕
切装置１のフイルター付開口体２は、開口部を充填材で
閉塞してあり充填材は溶解することなく硬化状態を保持
しているので、フイルター付開口体２は不透水性材料に
侵入されることがない。FIGS. 9 and 10 show the excavation state of the water stop wall and the built-in state where the water stop wall partitioning device with a valve is inserted into the excavation hole. The excavation hole 15 is implemented by a usual pile driver 30 as shown in FIG. At the time of excavation, cement is injected into the original ground in the excavation hole and stirred to construct a water stop wall,
Before the soil cement is solidified, the water-blocking wall partitioning device with valve 1 prepared in advance is hung by a crawler crane 31 and inserted into the excavation hole 15 as shown in FIG.
In the water blocking wall partitioning device 1 with a valve at the same stage, since the jack 4 is in a reduced state, a sufficient gap 32 exists between the jack 4 and the excavation hole 15, and the building is installed in the excavation hole. Can be performed smoothly. Further, since the opening 2 with a filter of the water blocking wall partitioning device 1 with a valve has an opening closed with a filler and the filler is kept in a hardened state without being dissolved, the opening 2 with a filter is It does not penetrate into impermeable materials.
【００２８】図１１は、止水壁１４の掘削孔１５にバル
ブ付止水壁仕切装置１を設置した状態を示している。バ
ルブ付止水壁仕切装置１が帯水層に遭遇する所定の位置
に到達すると、ジャッキ４を地上からの遠隔操作で作動
させ、２つのフィルター付開口体２、２をジャッキ４の
伸長によって拡張して、フィルター付開口体２のフイル
ター7を掘削孔１５の地山１３、１９に当接させて孔壁
１６を全面的に覆った状態を形成する。FIG. 11 shows a state where the water blocking wall partitioning device 1 with a valve is installed in the excavation hole 15 of the water stopping wall 14. When the water-blocking wall partitioning device 1 reaches a predetermined position where it encounters the aquifer, the jack 4 is operated by remote control from the ground, and the two filter-equipped openings 2, 2 are extended by the extension of the jack 4. Then, the filter 7 of the filter-equipped opening 2 is brought into contact with the grounds 13 and 19 of the excavation hole 15 to form a state in which the hole wall 16 is entirely covered.
【００２９】図１２は、止水壁１４の掘削孔１５を洗浄
している状態を示している。バルブ付止水壁仕切装置１
の設置後に、水用開口部８には上述の如く任意数のポン
プを選択的に接続する。接続したポンプの稼動によっ
て、模擬的に図示しているように、フイルター付開口体
２は止水壁１４の孔壁１６を揚水、ジェット水流あるい
は両者の組み合わせによって、止水壁１４の孔壁１６を
完全に洗浄することができる。FIG. 12 shows a state in which the excavation hole 15 of the water stop wall 14 is being cleaned. Water blocking wall partitioning device with valve 1
After the installation, an arbitrary number of pumps are selectively connected to the water opening 8 as described above. By operation of the connected pump, as shown schematically, the filter-equipped opening 2 causes the hole wall 16 of the water stop wall 14 to flow through the hole wall 16 of the water stop wall 14 by pumping water, jet water flow, or a combination of both. Can be completely washed.
【００３０】本発明によるバルブ付止水壁仕切装置の以
降の稼動状態については、図４、５、６において開示し
てきた工事の遂行に合わせた順序で機能別に詳細に説明
してきたので、特に詳細な説明はしない。即ち、上記洗
浄後は、止水壁内側の地山掘削が続けられ、地下水位の
調整を必要とする所定の深さに達すると、上流側と下流
側のバルブ付止水壁仕切装置１は、バルブ１１を閉じフ
イルター付開口体２に揚水ポンプを接続して揚水井戸と
して作動する。さらに、所定の壁内掘削工事が完了し、
地下構造物の建築が完成した際には、バルブ１１を開放
して地下水の流動を開始させ、正常な地下水流への復帰
が達成されると共に、工事完成後に地下水の流通状態を
維持管理することについても図４で説明したように、地
山の帯水層及びフイルター等の目詰まりを洗浄によって
解消して、自然環境の保全を長期間に亙って確立でき
る。The subsequent operating state of the water blocking wall partitioning device with a valve according to the present invention has been described in detail according to the functions in the order corresponding to the execution of the construction disclosed in FIGS. I will not give a detailed explanation. That is, after the above-mentioned washing, the ground excavation inside the water stop wall is continued, and when reaching the predetermined depth that requires the adjustment of the groundwater level, the upstream and downstream valve-mounted water stop wall partitioning devices 1 Then, the valve 11 is closed and a pump is connected to the opening 2 with a filter to operate as a pumping well. In addition, predetermined wall excavation work is completed,
When the construction of the underground structure is completed, the valve 11 is opened to start the flow of the groundwater, the return to the normal groundwater flow is achieved, and the flow of the groundwater is maintained after the construction is completed. As described with reference to FIG. 4, the clogging of the groundwater aquifer and the filter and the like can be eliminated by washing, and the preservation of the natural environment can be established over a long period of time.
【００３１】以上、実施の形態に基づいて詳細に説明し
てきたように、本発明によるバルブ付止水壁仕切装置と
その設置法は、止水壁の全長にわたることなく、集水、
注水効率の最も高い帯水層の位置に対応させており、廉
価な工事費で多くの地下水流に対応できるようにすると
共に、掘削井戸の代行を務めたり、導水機構のメンテナ
ンスも達成できるものであるが、本発明は上記実施の形
態に何ら限定されるものでなく、例えば、バルブに換え
て同等の機能を有する仕切弁を採用するという具合に、
本発明の趣旨を逸脱しない範囲において種々の変更が可
能であることは当然のことである。As described above in detail based on the embodiments, the water-blocking wall partitioning device with a valve according to the present invention and the method of installing the same do not need to cover the entire length of the water-blocking wall.
It is located at the location of the highest aquifer with the highest water injection efficiency.It can handle a large amount of groundwater flow at a low construction cost, and can act as a substitute for a drilling well and maintain the water conveyance mechanism. However, the present invention is not limited to the above embodiment at all, for example, to adopt a gate valve having an equivalent function in place of the valve,
Naturally, various modifications can be made without departing from the spirit of the present invention.
【００３２】[0032]
【発明の効果】本発明によるバルブ付止水壁仕切装置
は、地中透水部に建設する構造物の上流側と下流側に設
置される止水壁の所定位置に設置され、止水壁の内外側
に形成されている掘削地山に全面的に当接する２つの相
対峙するフィルター付開口体をバルブ付通水管で接続し
て止水壁の上流側と下流側とを通水可能に構成し、さら
に、フィルター付開口体の少なくとも一側に水用開口部
を設けて、揚水もしくは地中透水部の孔壁及びフイルタ
ーの洗浄に用い、バルブの開口によって地下水を導通さ
せることを特徴としているので、地中透水部に止水壁を
設ける工事を効率よく安価な工事費で施工することが可
能であり、加えて壁内の掘削工事中には、揚水井戸を形
成して掘削地盤の地下水処理を行って掘削井戸の新設を
不要にし、工事完了後は止水壁の上流側と下流側の水位
を同等に保つのに充分な人工導水や機能維持のための洗
浄を確立する効果と周辺の自然環境を何ら損ねることな
く施工できる効果を併せて発揮している。The water-blocking wall partitioning device with a valve according to the present invention is installed at predetermined positions on the water-blocking walls installed upstream and downstream of a structure to be constructed in the underground water-permeable section. Two opposing openings with a filter that are in full contact with the excavation ground formed on the inside and outside are connected by a water pipe with a valve so that water can flow between the upstream side and the downstream side of the water stop wall. Further, a water opening is provided on at least one side of the filter-equipped opening body, which is used for pumping or washing the hole wall and the filter of the underground water permeation part, and the groundwater is conducted by opening the valve. Therefore, it is possible to efficiently construct the water blocking wall in the underground water-permeable section at low cost.In addition, during the excavation work inside the wall, a pumping well is formed and the groundwater in the excavated ground is Completes construction by eliminating the need for new drilling wells Demonstrates the effect of establishing sufficient artificial water supply and cleaning to maintain the function and maintain the water level on the upstream and downstream sides of the cutoff wall equally, and the effect of being able to construct without impairing the surrounding natural environment. are doing.
【００３３】又、本発明によるバルブ付止水壁仕切装置
の設置法は、地中透水部に建設する構造物の上流側と下
流側に設置される止水壁を構築しながら、その固化以前
にバルブ付止水壁仕切装置を止水壁に配備し、固化後に
バルブ付止水壁仕切装置のバルブと水用開口部とを施工
状態に対応させて適宜操作することを基本的特徴にして
おり、具体的には、フィルター付開口体に充填材を充填
したり、バルブ付止水壁仕切装置を凍結し断熱材で閉塞
しておくことを特徴としているので、バルブ付止水壁仕
切装置を配備した止水壁の工事を簡潔に、迅速な工期で
完了させることができることになり、工期短縮によるコ
ストダウンを図れる効果を奏している。Further, the method of installing the water blocking wall partitioning device with a valve according to the present invention is to construct a water blocking wall installed upstream and downstream of a structure to be constructed in the underground water permeable section and to solidify the water blocking wall before its solidification. The basic feature is that a water blocking wall partitioning device with a valve is installed on the water blocking wall, and after solidification, the valve and water opening of the water blocking wall partitioning device with a valve are appropriately operated according to the construction state. More specifically, since the opening with filter is filled with a filler or the water blocking wall partitioning device with a valve is frozen and closed with a heat insulating material, the water blocking wall partitioning device with a valve is used. Can be completed simply and quickly in the construction period, which has the effect of reducing costs by shortening the construction period.
【図１】本発明によるバルブ付止水壁仕切装置の側面及
び部分断面図FIG. 1 is a side and partial cross-sectional view of a water blocking wall partition device with a valve according to the present invention.
【図２】バルブ付止水壁仕切装置におけるバルブ付通水
管部分の断面及び側面図FIG. 2 is a cross-sectional view and a side view of a part of a water pipe with a valve in a water blocking wall partitioning device with a valve.
【図３】バルブ付止水壁仕切装置におけるジャッキ部分
の断面及び側面図FIG. 3 is a cross-sectional view and a side view of a jack portion of the water blocking wall partition device with a valve.
【図４】バルブ付止水壁仕切装置の孔壁洗浄図FIG. 4 is a diagram illustrating a cleaning of a hole wall of a water blocking wall partitioning device with a valve.
【図５】バルブ付止水壁仕切装置の掘削井戸兼用図FIG. 5 is a drawing of a water blocking wall partitioning device with a valve, which also serves as a drilling well.
【図６】バルブ付止水壁仕切装置の地下水流通図FIG. 6 is a diagram of groundwater flow of a water stop wall partitioning device with a valve.
【図７】本発明によるバルブ付止水壁仕切装置の設置準
備図FIG. 7 is a diagram illustrating a preparation for installing a water blocking wall partitioning device with a valve according to the present invention.
【図８】本発明によるバルブ付止水壁仕切装置の部分断
面図FIG. 8 is a partial sectional view of a water blocking wall partitioning device with a valve according to the present invention.
【図９】止水壁の掘削図FIG. 9 is an excavation diagram of a water stop wall.
【図１０】バルブ付止水壁仕切装置の止水壁への建て込
み図FIG. 10 is a view showing the installation of a water stop wall partitioning device with a valve on the water stop wall.
【図１１】バルブ付止水壁仕切装置の止水壁への拡大設
置図FIG. 11 is an enlarged installation view of a water stop wall partitioning device with a valve on the water stop wall.
【図１２】バルブ付止水壁仕切装置の孔壁洗浄図FIG. 12 is a diagram illustrating a cleaning of a hole wall of a water blocking wall partitioning device with a valve.
【図１３】地盤地下水の水流状態図Fig. 13 Groundwater flow diagram
【図１４】止水壁による地下水流の遮断状態図FIG. 14 is a diagram showing a cutoff state of groundwater flow by a water stop wall.
【図１５】止水壁内側の地山掘削における揚水井戸の設
置Fig. 15 Installation of pumping wells for excavation of ground inside water blocking wall
【図１６】従来の止水壁における地下水導通図FIG. 16 is a diagram of groundwater conduction in a conventional water blocking wall.
【図１７】従来の止水壁における他の地下水導通図FIG. 17 is another groundwater conduction diagram in a conventional water blocking wall.
１ バルブ付止水壁仕切装置 ２ フィルター付開口体 ３ バルブ付通水管 ４ ジャッキ ５ 鋼殻 ６ 開口部 ７ フイルター ８ 水用開口部 ９ ダクト管 １０ 結合部 １１ バルブ １２ 開口部端部 １３ 地山 １４ 止水壁 １５ 掘削孔 １６ 孔壁 １９ 止水壁内側の地山 ２１ 地下水位 ２２ 地下構造物 ２７ フイルター材 ２８ 充填材 ３０ 杭打機 ３１ クローラクレーン ３２ 間隙 ４０ 地下水流 ４１ 帯水層 ４２ 揚水井戸 ４３ 地下水の水位 ５０ 地下構造物 ５１ 止水壁 ５２ 壁面 ５３、５５ 導水パイプ ５４ 躯体導水管 ６０ 止水壁 ６１ Ｈ型鋼 ６２ 取付口 ６３ 止水壁の空間 ６４ 砂利等 ６５ 貫通孔形成装置 DESCRIPTION OF SYMBOLS 1 Water-blocking wall partitioning device with valve 2 Opening with filter 3 Water-permeable pipe with valve 4 Jack 5 Steel shell 6 Opening 7 Filter 8 Water opening 9 Duct pipe 10 Coupling part 11 Valve 12 Opening end part 13 Ground mountain 14 Water stop wall 15 Drilling hole 16 Hole wall 19 Ground in the water stop wall 21 Groundwater level 22 Underground structure 27 Filter material 28 Filler 30 Pile driver 31 Crawler crane 32 Gap 40 Groundwater flow 41 Aquifer 42 Pumping well 43 Water level of groundwater 50 Underground structure 51 Water stop wall 52 Wall surface 53, 55 Water transfer pipe 54 Structural water transfer pipe 60 Water stop wall 61 H-shaped steel 62 Mounting port 63 Water stop wall space 64 Gravel etc. 65 Through-hole forming device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 内山 伸 東京都港区芝浦一丁目２番３号 清水建設 株式会社内 Ｆターム(参考） 2D049 BA16 BA19 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shin Uchiyama 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation F-term (reference) 2D049 BA16 BA19
Claims (9)
下流側に設置される止水壁の所定位置に設置されるバル
ブ付止水壁仕切装置であって、止水壁の内外側に形成さ
れている掘削地山に全面的に当接する２つの相対峙する
フィルター付開口体をバルブ付通水管で接続して構成す
るバルブ付止水壁仕切装置。1. A water-blocking wall partitioning device with a valve installed at a predetermined position on a water-blocking wall installed on an upstream side and a downstream side of a structure constructed in an underground water-permeable section. A water-blocking wall partitioning device with a valve, wherein two opposing openings with a filter, which are entirely in contact with the excavation ground formed on the outside, are connected by a water pipe with a valve.
に、水用開口部を設けることを特徴とする請求項１に記
載のバルブ付止水壁仕切装置。2. The water shutoff wall partitioning device according to claim 1, wherein a water opening is provided on at least one side of the filter opening.
ルターの洗浄に用いられることを特徴とする請求項２に
記載のバルブ付止水壁仕切装置。3. The water-blocking wall partitioning device with a valve according to claim 2, wherein the water opening is used for washing a hole wall and a filter of the underground water-permeable portion.
徴とする請求項２、３に記載のバルブ付止水壁仕切装
置。4. The water blocking wall partitioning device with a valve according to claim 2, wherein the water opening is used for pumping water.
ルター付開口体間を接続して上流側から下流側に地下水
を導通することを特徴とする請求項１、２に記載のバル
ブ付止水壁仕切装置。5. The valve stopper according to claim 1, wherein the valve of the water pipe with a valve is opened to connect the openings with the filter so that groundwater is conducted from the upstream side to the downstream side. Water wall partitioning device.
下流側に設置される止水壁を構築し、該止水壁の固化以
前にバルブ付止水壁仕切装置を該止水壁に配備し、該止
水壁の固化後に該バルブ付止水壁仕切装置のバルブと水
用開口部とを施工状態に対応させて適宜操作することを
特徴とする請求項１〜５のいずれかに記載するバルブ付
止水壁仕切装置の設置法。6. A water-blocking wall installed upstream and downstream of a structure to be constructed in the underground water-permeable section, and a water-blocking wall partitioning device with a valve is provided before the water-blocking wall solidifies. 6. The valve according to any one of claims 1 to 5, wherein the valve is provided on a wall, and after the water blocking wall is solidified, a valve and a water opening of the water blocking wall partitioning device with a valve are appropriately operated in accordance with a construction state. The installation method of the water blocking wall partitioning device with a valve described in the above.
おくことを特徴とする請求項６に記載するバルブ付止水
壁仕切装置の設置法。7. The method according to claim 6, wherein a filler is filled in the opening with a filter.
ことを特徴とする請求項６に記載するバルブ付止水壁仕
切装置の設置法。8. The method according to claim 6, wherein the water blocking wall partitioning device with a valve is frozen.
材で閉塞しておくことを特徴とする請求項８に記載する
バルブ付止水壁仕切装置の設置法。9. The method according to claim 8, wherein the frozen water blocking wall partition device with a valve is closed with a heat insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26134498A JP3713654B2 (en) | 1998-09-16 | 1998-09-16 | Water stop wall partition device with valve and pumping method using water stop wall partition device with valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26134498A JP3713654B2 (en) | 1998-09-16 | 1998-09-16 | Water stop wall partition device with valve and pumping method using water stop wall partition device with valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000087385A true JP2000087385A (en) | 2000-03-28 |
| JP3713654B2 JP3713654B2 (en) | 2005-11-09 |
Family
ID=17360540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26134498A Expired - Lifetime JP3713654B2 (en) | 1998-09-16 | 1998-09-16 | Water stop wall partition device with valve and pumping method using water stop wall partition device with valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3713654B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006138139A (en) * | 2004-11-12 | 2006-06-01 | Tokyu Construction Co Ltd | Earth retaining wall having built-in water passing cylinder consisting of plurality of water passages and its construction method |
| CN102011412A (en) * | 2010-12-31 | 2011-04-13 | 中国水电顾问集团中南勘测设计研究院 | Concrete anti-seepage wall joint |
| CN110906085A (en) * | 2019-12-19 | 2020-03-24 | 长安大学 | Water plugging valve device and construction method thereof |
| CN114718054A (en) * | 2022-04-19 | 2022-07-08 | 山东省建筑工程质量检验检测中心有限公司 | Emergency protection device for manual hole digging pile |
-
1998
- 1998-09-16 JP JP26134498A patent/JP3713654B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006138139A (en) * | 2004-11-12 | 2006-06-01 | Tokyu Construction Co Ltd | Earth retaining wall having built-in water passing cylinder consisting of plurality of water passages and its construction method |
| JP4589084B2 (en) * | 2004-11-12 | 2010-12-01 | 東急建設株式会社 | A retaining wall with a built-in water pipe composed of a plurality of water passages, and a method for ensuring the flow of groundwater using the retaining wall |
| CN102011412A (en) * | 2010-12-31 | 2011-04-13 | 中国水电顾问集团中南勘测设计研究院 | Concrete anti-seepage wall joint |
| CN110906085A (en) * | 2019-12-19 | 2020-03-24 | 长安大学 | Water plugging valve device and construction method thereof |
| CN114718054A (en) * | 2022-04-19 | 2022-07-08 | 山东省建筑工程质量检验检测中心有限公司 | Emergency protection device for manual hole digging pile |
| CN114718054B (en) * | 2022-04-19 | 2024-03-01 | 山东省建筑工程质量检验检测中心有限公司 | Emergency protection device for manual hole digging pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3713654B2 (en) | 2005-11-09 |
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