JPH08246485A - Management method for polluted water leaking through partition wall - Google Patents
Management method for polluted water leaking through partition wallInfo
- Publication number
- JPH08246485A JPH08246485A JP7047216A JP4721695A JPH08246485A JP H08246485 A JPH08246485 A JP H08246485A JP 7047216 A JP7047216 A JP 7047216A JP 4721695 A JP4721695 A JP 4721695A JP H08246485 A JPH08246485 A JP H08246485A
- Authority
- JP
- Japan
- Prior art keywords
- wall
- water
- partition wall
- contaminated water
- leaking
- 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
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、仕切り壁から漏出す
る汚染水の管理方法に関し、特に、仕切り壁で囲まれる
領域内に投入された廃棄物、埋立て土砂等の投入材から
浸出する汚染水が、仕切り壁の欠損箇所等を経て仕切り
壁の外部に漏出するのを防止するための汚染水の管理方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling contaminated water leaking from a partition wall, and more particularly to pollution leaching from input materials such as waste and landfilled sand that are thrown into the area surrounded by the partition wall. The present invention relates to a contaminated water management method for preventing water from leaking to the outside of a partition wall through a defective portion of the partition wall or the like.
【０００２】[0002]
【従来の技術】廃棄物等の埋立処分施設として、例え
ば、透水性の小さい地層と、地中に形成した透水性等の
仕切り壁とによって囲まれる凹部を造成し、この形成さ
れた凹部に廃棄物等を投入し埋立てて処理するものが知
られている。かかる処分場によれば、投入された廃棄物
等から汚染物質が浸出して、処分場の内部に汚染水が存
在する場合でも、この汚染水の外部への流出が遮水壁等
の仕切り壁により遮断され、これによって、処分場の周
囲の環境に影響を与えることがないようになっている。2. Description of the Related Art As a landfill disposal facility for wastes, for example, a recess surrounded by a layer of low water permeability and a partition wall of water permeability formed in the ground is formed, and the formed recess is discarded. It is known to throw things in and dispose of them in landfill. According to such a disposal site, even if pollutants are leached from the input waste, etc. and contaminated water exists inside the disposal site, the outflow of this contaminated water to the outside will result in a partition wall such as an impermeable wall. It is shielded by the plant, so that it does not affect the environment around the repository.
【０００３】また、このような遮水壁等の仕切り壁は水
中に設けることもでき、これに囲まれた内部の水と入れ
替えつつ廃棄物等の投入材を投入することにより、かか
る投入材を埋立て処分することができる。Further, such a partition wall such as an impermeable wall can also be provided in water, and by throwing a throwing material such as waste while replacing the inside water surrounded by this, such a throwing material can be used. Can be landfilled.
【０００４】さらに、遮水壁等の仕切り壁は、埋立て土
砂等のその他の投入材を投入するための埋立区域を区画
すべく設けられる場合もあるが、いずれの場合において
も、廃棄物や汚染土砂等を封じ込めて、これらの投入材
から浸出する汚染物質等を含む汚染水が、仕切り壁等で
囲まれる領域から流出しないように機能させる必要があ
る。Further, a partition wall such as an impermeable wall may be provided so as to define a landfill area for inputting other input materials such as landfill earth and sand. It is necessary to contain the contaminated soil and the like so that the contaminated water containing the pollutants leached from these input materials does not flow out from the area surrounded by the partition wall or the like.
【０００５】一方、このような遮水壁等の仕切り壁は、
クラック等の破損部分が生じた場合や、仕切り壁を構成
する部材間の継ぎ手部分に隙間等が生じた場合には、か
かる破損部分や隙間などから汚染水が外部に流出して、
周囲の環境に影響を与えるおそれがあるため、このよう
な汚染水の漏出を慎重に管理し、必要に応じてこれらの
破損部分や隙間を補修しなければならない。On the other hand, partition walls such as water-impervious walls are
If a damaged part such as a crack occurs, or if there is a gap in the joint part between the members that make up the partition wall, the contaminated water will flow out from the damaged part or the gap.
Leakage of such contaminated water must be carefully controlled and any such damages or gaps repaired as necessary as they may affect the surrounding environment.
【０００６】したがって、従来は、かかる汚染水の漏出
の管理方法として、図３に一例として示すように、例え
ば地下水の流向に沿った下流側において、投入材の投入
領域３２を囲む遮水壁３３の外側適宜位置に井戸３１を
設け、この井戸３１から地下水を定期的にサンプリング
してその水質を調査する方法や、井戸３１に水質測定器
を取付けて地下水のモニタリングを行なう方法等が採用
されていた。Therefore, as a conventional method for controlling leakage of contaminated water, as shown in FIG. 3 as an example, for example, on a downstream side along the flow direction of groundwater, a water-blocking wall 33 surrounding a charging area 32 for charging material. A well 31 is provided at an appropriate position outside of the well, and a method of periodically sampling groundwater from the well 31 to investigate the water quality, a method of attaching a water quality measuring device to the well 31 and monitoring the groundwater are adopted. It was
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記従
来の汚染水の漏出管理方法によれば、かかる管理方法
は、遮水壁３３の外側周囲の特定位置において、定点観
測を行なうものであるため、設置された井戸３１の位置
や深さなどによって、把握される水質汚染の状況が限定
されることになるとともに、汚染水を含む地下水は、井
戸３１を設けた位置に滞留することなく、下流側に直ち
に流下しやすいため、漏出した汚染水を正確に採取する
ことができず、したがって仕切り壁の周囲の水質汚染の
状況、すなわち仕切り壁からの汚染水の漏出状況を適確
に把握することが困難であるという課題があった。However, according to the above-mentioned conventional contaminated water leakage management method, since such a management method performs fixed point observation at a specific position around the outside of the impermeable wall 33, The situation of water pollution to be grasped will be limited depending on the position and depth of the installed well 31, and groundwater containing contaminated water will not be retained at the position where the well 31 is provided, It is difficult to accurately collect leaked contaminated water because it easily flows down to the wall, and therefore it is possible to accurately grasp the state of water pollution around the partition wall, that is, the leaked state of contaminated water from the partition wall. There was a problem that it was difficult.
【０００８】そこで、この発明はかかる従来の課題に着
目してなされたもので、漏出した汚染水の拡散を防止し
つつ、広範囲にわたって、仕切り壁からの汚染水の漏出
状況を適確に把握することのできる仕切り壁から漏出す
る汚染水の管理方法を提供することを目的とするもので
ある。Therefore, the present invention has been made in view of such a conventional problem, and it is possible to accurately grasp the leaked state of the contaminated water from the partition wall over a wide area while preventing the diffusion of the leaked contaminated water. It is an object of the present invention to provide a control method of contaminated water leaking from a partition wall that can be used.
【０００９】また、この発明は、汚染水の周囲の地盤へ
の拡散を、より確実に防止することのできる仕切り壁か
ら漏出する汚染水の管理方法を提供することを目的とす
るものである。Another object of the present invention is to provide a method for controlling contaminated water leaking from a partition wall, which can prevent the contaminated water from diffusing into the surrounding ground more reliably.
【００１０】[0010]
【課題を解決するための手段】この発明は、上記目的を
達成するためになされたもので、その要旨は、仕切り壁
で囲まれる領域内に投入された廃棄物、埋立て土砂等の
投入材から浸出する汚染水が、仕切り壁の欠損箇所等を
経て仕切り壁の外部に漏出するのを防止するための地下
汚染水の管理方法であって、前記仕切り壁を、内壁と外
壁とで挟まれた中空部分を有する二重構造のものとして
構成し、この中空部分に滞留させた滞留水を採取してそ
の水質を管理することにより、内壁からの汚染水の漏出
状況を把握することを特徴とする仕切り壁から漏出する
汚染水の管理方法にある。The present invention has been made in order to achieve the above-mentioned object, and its gist is the input material such as waste, landfilled sand, and the like, which is thrown into the area surrounded by the partition wall. This is a method of controlling underground contaminated water to prevent the contaminated water leaching from the tank from leaking to the outside of the partition wall through the missing part of the partition wall, etc., and the partition wall is sandwiched between the inner wall and the outer wall. It is configured as a double structure having a hollow part, and collects the stagnant water retained in this hollow part and manages the quality of the water to grasp the leakage status of contaminated water from the inner wall. It is in the control method of contaminated water leaking from the partition wall.
【００１１】ここで、上記記載において、仕切り壁と
は、例えば地表面あるいは水上から、難透水層や不透水
層等に向けて打設形成される壁体をいい、地中連続壁工
法により造成される遮水壁や、鋼矢板を打ち込んで造成
される締切り壁等により構成されるものが含まれる。Here, in the above description, the partition wall means a wall body formed by being cast from the ground surface or above water toward a water impermeable layer or a water impermeable layer, for example. Included are those that are made up of water-impervious walls and shut-off walls that are constructed by driving steel sheet piles.
【００１２】また、内壁と外壁とで挟まれた中空部分
は、必ずしも仕切り壁の全長にわたって連続形成する必
要はなく、例えば、仕切り壁の内部に、縦穴を、仕切り
壁の周方向に所定間隔をおいて多数連設形成することに
より、断続的に連続するものとして設けることもでき
る。なお、この中空部分には、未掘削の地盤や埋戻し土
砂等を充填材として適宜充填しておくこともできる。Further, the hollow portion sandwiched between the inner wall and the outer wall does not necessarily need to be continuously formed over the entire length of the partition wall. For example, vertical holes are formed inside the partition wall and predetermined intervals are provided in the circumferential direction of the partition wall. In addition, by forming a large number of them in series, they can be provided as intermittently continuous ones. The hollow portion may be appropriately filled with unexcavated ground, backfilled earth, or the like as a filler.
【００１３】そして、この発明の仕切り壁から漏出する
汚染水の管理方法は、さらに、前記中空部分に、仕切り
壁で囲まれる領域内の水位より高い水位となるよう注水
し、内壁を挟んだ内外の水頭差により、内壁からの汚染
水の漏出を防止することができる。The method for controlling contaminated water leaking from the partition wall according to the present invention further comprises pouring water into the hollow portion so that the water level is higher than the water level in the region surrounded by the partition wall, and the inner and outer sides with the inner wall sandwiched therebetween. Due to the difference in the water heads, leakage of contaminated water from the inner wall can be prevented.
【００１４】[0014]
【作用】そして、この発明の仕切り壁から漏出する汚染
水の管理方法によれば、仕切り壁は、内壁と外壁とで挟
まれた中空部分を有する二重構造を備えるので、内壁の
破損等により内部の汚染水が漏出しても、この漏出汚染
水は、周囲の地盤に流出拡散することなく、内壁と外壁
との間の中空部分に滞留する。したがって、中空部分の
滞留水の水質を管理して汚染水を検出することにより、
汚染水の内壁からの漏出を容易に検知することができ
る。また、中空部分は、特定位置に限定することなく、
仕切り壁の周方向に沿って広範囲にわたって設けること
ができるとともに、汚染水が検出された滞留水の採取位
置を管理すれば、内壁のからの汚染水の漏出位置を容易
に特定することもできる。According to the method for controlling contaminated water leaking from the partition wall of the present invention, since the partition wall has a double structure having a hollow portion sandwiched between the inner wall and the outer wall, damage to the inner wall or the like may occur. Even if the contaminated water inside leaks out, the leaked contaminated water stays in the hollow portion between the inner wall and the outer wall without flowing out and spreading to the surrounding ground. Therefore, by controlling the quality of the accumulated water in the hollow part and detecting contaminated water,
Leakage from the inner wall of contaminated water can be easily detected. Also, the hollow portion is not limited to a specific position,
It can be provided over a wide area along the circumferential direction of the partition wall, and if the collection position of the accumulated water in which the contaminated water is detected is managed, the leakage position of the contaminated water from the inner wall can be easily specified.
【００１５】また、前記中空部分に注水して、これの内
部の水位を仕切り壁で囲まれる領域内の水位より高い水
位に保持すれば、内壁を挟んだ内外の水頭差により、内
壁からの汚染水の漏出を、容易に防止することができ
る。Further, if water is poured into the hollow portion and the water level inside the hollow portion is maintained at a higher water level than the water level in the area surrounded by the partition wall, the water level difference between the inner and outer sides of the inner wall causes contamination from the inner wall. Leakage of water can be easily prevented.
【００１６】[0016]
【実施例】次に、この発明の一実施例について、添付図
面を参照しつつ詳細に説明する。図１は、この発明の一
実施例にかかる汚染水の管理方法により、仕切り壁から
漏出する汚染水を管理する状況を示す説明図である。す
なわち、仕切り壁としての遮水壁１０によって周囲を囲
まれた領域２０の内部には、廃棄物、汚染土等の、汚染
物質の浸出を生じる投入材１１が埋立て投棄されている
とともに、これらから浸出した汚染物質が、地下水等に
混入して、遮水壁１０で囲まれる内部の領域２０には、
汚染水１５が、所定の水位で貯留されている。また、埋
立て投棄された投入材１１の上部には、覆土１３が敷設
されるとともに、その表面には、雨水が投入材１１の内
部への浸出するのを防止するための表面遮水工１４が施
され、これらによって、投入材１１が地表面に露出する
のを防止するとともに、投入材１１からの臭気等が外部
に漏れるのを遮断している。さらに、遮水壁１０で囲ま
れる内部の領域２０には、所定の高さに、排水パイプ１
２が布設されるとともに、この排水パイプ１２は汚水ポ
ンプ等の排水装置に連通することにより、内部の領域２
０の水位が過剰になった場合に、汚染水１５を地上に排
水処理して、内部の水位が所定の高さに保持されるよう
になっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is an explanatory diagram showing a situation in which contaminated water leaking from a partition wall is managed by a contaminated water management method according to an embodiment of the present invention. That is, inside the area 20 surrounded by the impermeable wall 10 as a partition wall, the input material 11 causing leaching of pollutants such as waste and polluted soil is landfilled and discarded. The pollutants leached from the groundwater are mixed into the groundwater etc.
The contaminated water 15 is stored at a predetermined water level. A cover soil 13 is laid on the input material 11 that has been dumped in the landfill, and a surface water-blocking work 14 for preventing rainwater from leaching into the input material 11 on the surface thereof. By these, the input material 11 is prevented from being exposed to the ground surface, and the odor and the like from the input material 11 is blocked from leaking to the outside. Furthermore, in the internal region 20 surrounded by the water-impervious wall 10, the drain pipe 1 is set at a predetermined height.
2 is laid and the drain pipe 12 communicates with a drainage device such as a sewage pump to provide an internal area 2
When the water level of 0 becomes excessive, the contaminated water 15 is drained to the ground and the internal water level is maintained at a predetermined height.
【００１７】そして、この実施例の仕切り壁から漏出す
る汚染水の管理方法は、遮水壁１０に生じたクラック等
の破損個所を介して、内部に貯留されたの汚染水１５
が、周囲の地盤３０に流出するのを防止するために、か
かる汚染水１５の漏出を管理すべく採用されるものであ
る。The control method of the contaminated water leaking from the partition wall of this embodiment is as follows: the contaminated water 15 stored inside through the damaged portion such as a crack generated in the impermeable wall 10.
However, in order to prevent the leakage of the contaminated water 15 to the surrounding ground 30, it is adopted to manage the leakage of the contaminated water 15.
【００１８】そして、この実施例の管理方法によれば、
前記仕切り壁としての遮水壁１０を、内壁１６と外壁１
７とで挟まれた中空部分１８を有する二重構造のものと
して構成する。すなわち、かかる遮水壁１０は、これの
内部の領域２０における掘削作業及び投入材１１の埋立
て作業に先立って、例えば連続地中壁工法等を用いて、
地表面から難透水層２１に至るコンクリートやその他の
硬化体からなる固化壁を、予定する埋立て領域２０の周
囲を囲む連続壁として、内外二重に造成することにより
容易に形成することができる。According to the management method of this embodiment,
The impermeable wall 10 as the partition wall includes an inner wall 16 and an outer wall 1.
It is constructed as a double structure having a hollow portion 18 sandwiched between 7 and 7. That is, the impermeable wall 10 is, for example, using a continuous underground wall method or the like prior to excavation work and landfill work of the input material 11 in the region 20 inside the impermeable wall 10.
The solidified wall made of concrete or other hardened material from the ground surface to the water impermeable layer 21 can be easily formed by forming the inner and outer double layers as a continuous wall surrounding the planned landfill area 20. .
【００１９】また、造成された内壁１６と外壁１７との
間の中空部分１８は、この部分の地盤が砂質土等の良質
土の場合にはそのまま残置し、あるいは良質土でない場
合はこれを掘削除去した後砕石や砂等で適宜埋め戻すと
ともに、かかる残置された地盤や埋戻した地盤には、例
えば有孔パイプを、遮水壁１０の周方向全周にわたって
所定の間隔をおいて多数連設させながら、立設状態で挿
入設置して、多数のモニタリング井戸１９を形成する。
なお、中空部分１８の地盤が良質土でない場合は、これ
を残置しつつモニタリング井戸１９の配列間隔を小さく
することも望ましい。The hollow portion 18 between the formed inner wall 16 and the outer wall 17 is left as it is if the ground of this portion is good quality soil such as sandy soil, or if it is not good quality soil. After excavating and removing, it is appropriately backfilled with crushed stone, sand, etc., and a large number of, for example, perforated pipes are provided on the remaining ground or backfilled ground at predetermined intervals over the entire circumference of the impermeable wall 10. A large number of monitoring wells 19 are formed by inserting and installing in an upright state while continuously connecting them.
In addition, when the ground of the hollow part 18 is not good soil, it is also desirable to reduce the arrangement interval of the monitoring wells 19 while leaving this.
【００２０】さらに、この中空部分１８の上端には、内
壁１６と外壁１７との間に架設して床版２２を設置する
ことにより、その上端開口を閉塞するとともに、この床
版２２には、注水ポンプ２３から延長する注水配管２４
を接続するための注入開口が適宜位置に形成され、注水
ポンプ２３から中空部分１８に注水を行なうことによ
り、中空部分１８の水位を任意に調整することができる
ようになっている。Further, a floor slab 22 is installed at the upper end of the hollow portion 18 between the inner wall 16 and the outer wall 17 to close the upper end opening, and the floor slab 22 has Water injection pipe 24 extending from the water injection pump 23
A pouring opening for connecting the above is formed at an appropriate position, and by pouring water from the water injection pump 23 into the hollow portion 18, the water level of the hollow portion 18 can be arbitrarily adjusted.
【００２１】なお、上記実施例では、中空部分１８を土
砂で充填するとともに、この充填された土砂を介して多
数のモニタリング井戸１９を設置する場合について記載
したが、中空部分１８は、必ずしも土砂で充填する必要
はなく、この場合には、モニタリング井戸１９は、中空
部分１８に吊り下げて設置することができる。また、モ
ニタリング井戸１９は必ずしも設ける必要はなく、例え
ばポンプ等を介して所定の位置から滞留水を汲み上げ
て、これの水質を管理することもできる。Although the hollow portion 18 is filled with earth and sand and a large number of monitoring wells 19 are installed through the earth and sand filled in the above embodiment, the hollow portion 18 is not necessarily made of earth and sand. It does not have to be filled, in which case the monitoring well 19 can be installed suspended from the hollow part 18. The monitoring well 19 does not necessarily have to be provided. For example, the accumulated water can be pumped from a predetermined position via a pump or the like to control the quality of the water.
【００２２】そして、上記構成を有する遮水壁１０が造
成された後、あるいはかかる造成作業と併行して、この
遮水壁１０で囲まれる内部の領域２０を掘削するととも
に、掘削された領域２０には廃棄物や汚染土等の投入材
１１を順次投棄して、この領域２０を埋戻して行く作業
が行われる。かかる埋戻し作業中において、あるいは埋
戻し作業が完了した後において、遮水壁１０で囲まれる
内部の領域２０に堆積貯留される汚染水１５は、これが
遮水壁１０を通過して外部の地盤に流出しないように、
この実施例の管理方法により以下のようにして管理され
る。After the impermeable wall 10 having the above-described structure is formed or in parallel with the construction work, an inner region 20 surrounded by the impermeable wall 10 is excavated, and the excavated region 20 is also excavated. In this case, the input material 11 such as waste and contaminated soil is sequentially discarded, and the work of backfilling this area 20 is performed. During the backfilling work or after the backfilling work is completed, the contaminated water 15 accumulated and stored in the inner region 20 surrounded by the water blocking wall 10 passes through the water blocking wall 10 and the outside ground. So that it does not leak to
It is managed as follows by the management method of this embodiment.
【００２３】すなわち、例えば遮水壁１０の内壁１６に
クラック等の破損部分が生じて、内部の汚染水１５が内
壁１６の外方に漏出しても、汚染水１５は、外壁１７の
存在により遮水壁１０の外部に拡散することなく中空部
分１８に滞留するとともに、かかる中空部分１８に滞留
する汚染水は、最寄りのモニタリング井戸１９に流入す
る。したがって、当該モニタリング井戸１９内の水質の
変化から、内壁１６からの汚染水１５の漏出が容易に検
知されとともに、汚染水１５の漏出が検知されたモニタ
リング井戸１９の位置から、汚染水１５の漏出箇所であ
る内壁１６の破損個所を容易に特定することができる。
そして、必要に応じて、例えばグラウト等のセメント系
の注入固化材や、水ガラス等の樹脂系の注入固化材等を
当該破損個所の周囲に注入すれば、この破損個所を容易
に補修することができる。That is, for example, even if a damaged portion such as a crack occurs in the inner wall 16 of the impermeable wall 10 and the contaminated water 15 leaks to the outside of the inner wall 16, the contaminated water 15 is still present due to the presence of the outer wall 17. The polluted water staying in the hollow portion 18 without diffusing to the outside of the impermeable wall 10 and staying in the hollow portion 18 flows into the nearest monitoring well 19. Therefore, leakage of the contaminated water 15 from the inner wall 16 is easily detected from the change in the water quality in the monitoring well 19, and leakage of the contaminated water 15 is detected from the position of the monitoring well 19 where the leakage of the contaminated water 15 is detected. It is possible to easily identify the damaged portion of the inner wall 16 that is the location.
Then, if necessary, a cement-based injection-solidifying material such as grout or a resin-based injection-solidifying material such as water glass may be injected around the damaged area to easily repair the damaged area. You can
【００２４】また、この実施例の管理方法によれば、上
述のように、内壁１６の破損により汚染水１５が内壁１
６の外方に漏出しても、外壁１７の存在によって、汚染
水１５が遮水壁１０の外部へ流出するのを強固に防止す
ることができるとともに、さらに、中空部分１８への注
水量を調整して、中空部分１８の水位が、内部の領域２
０内の汚染水１５の水位より高い水位となるよう保持す
ることにより、内壁１６を挟んだ内外の水頭差により、
内壁１６からの汚染水１５の漏出をも防止することがで
きる。一方、中空部分１８から揚水して中空部分１８の
水位が領域外すなわち周囲の地盤３０より低い水位とな
るよう調整することによっても、外壁１７を挟んだ中空
部分１８と領域ガスとの水頭差により、汚染水の遮水壁
１０の外部への流出を防止することができる。Further, according to the management method of this embodiment, as described above, the contaminated water 15 is removed from the inner wall 1 due to the damage of the inner wall 16.
Even if it leaks to the outside of 6, the presence of the outer wall 17 can firmly prevent the contaminated water 15 from flowing out of the impermeable wall 10, and further, the amount of water injected into the hollow portion 18 Adjust to adjust the water level in the hollow portion 18 to the internal area 2
By maintaining the water level higher than the water level of the contaminated water 15 within 0, due to the water head difference between the inside and outside with the inner wall 16 sandwiched,
Leakage of the contaminated water 15 from the inner wall 16 can also be prevented. On the other hand, by pumping water from the hollow portion 18 and adjusting the water level of the hollow portion 18 to a water level outside the area, that is, lower than the surrounding ground 30, the water level difference between the hollow portion 18 with the outer wall 17 and the area gas It is possible to prevent the contaminated water from flowing out of the impermeable wall 10.
【００２５】なお、上記実施例では、遮水壁１０を、全
周にわたって中空部分１８を有する二重構造とし、遮水
壁１０全周の適宜位置における滞留水の水質を管理する
場合について記載したが、この発明はこれに限定される
ものではなく、例えば地下水の流下方向下流側に位置す
る部分のみ二重構造とすることもできる。In the above embodiment, the impermeable wall 10 has a double structure having a hollow portion 18 all around, and the quality of accumulated water at an appropriate position around the impermeable wall 10 is controlled. However, the present invention is not limited to this, and for example, only the portion located on the downstream side in the downflow direction of groundwater may have a double structure.
【００２６】また、上記実施例では、内壁１６及び外壁
１７を、ともに連続地中壁工法等により造成した遮水壁
としての固化壁により構成する場合について記載した
が、この発明は、かかる実施の態様に限定されるもので
はなく、例えば図２（ａ）及び（ｂ）に示すように、内
壁２６及び外壁２７をともに鋼矢板を多数打設して形成
した締切り壁として構成することもでき（（ａ）参
照）、また、連続地中壁工法等により一重に造成した固
化壁２８の内部に、これの周方向に延長する中空部分と
しての連続溝２９を形成することにより、二重構造とす
ることもできる（（ｂ）参照）。さらに、例えば、固化
壁と鋼矢板からなる締切り壁とを組み合わせ、内壁を遮
水壁としての固化壁で構成し、外壁を簡易な締切り壁で
構成して二重構造とすることもできる。Further, in the above embodiment, the case where both the inner wall 16 and the outer wall 17 are constituted by the solidified wall as the impermeable wall formed by the continuous underground wall construction method or the like is described. The present invention is not limited to the mode, and for example, as shown in FIGS. 2A and 2B, both the inner wall 26 and the outer wall 27 may be configured as a shutoff wall formed by casting a large number of steel sheet piles ( (See (a)), and by forming a continuous groove 29 as a hollow portion extending in the circumferential direction in the solidified wall 28 that is formed by a single method by a continuous underground wall method or the like, a double structure is obtained. It is also possible (see (b)). Furthermore, for example, it is also possible to combine a solidification wall and a cutoff wall made of steel sheet pile, configure the inner wall with a solidification wall as a water shield wall, and configure the outer wall with a simple cutoff wall to form a double structure.
【００２７】なお、図１（ａ）に示す、締切り壁による
仕切り壁は、投入材を投棄するための領域を水中に設け
る場合に適するものである。また、図１（ｂ）に示す仕
切り壁では、例えば固化壁を造成する際に中空型枠を多
数設置することなどによって、縦穴を仕切り壁の周方向
に所定間隔をおいて多数連設形成することにより、中空
部分を、縦穴が断続的に連続するものとして設けること
もできる。The partition wall by the shut-off wall shown in FIG. 1 (a) is suitable when the area for dumping the input material is provided in water. Further, in the partition wall shown in FIG. 1 (b), for example, by installing a large number of hollow molds when forming a solidified wall, a large number of vertical holes are continuously formed at predetermined intervals in the circumferential direction of the partition wall. As a result, the hollow portion can be provided as a continuous vertical hole.
【００２８】[0028]
【発明の効果】以上説明したように、この発明の仕切り
壁から漏出する汚染水の管理方法によれば、仕切り壁
を、内壁と外壁とで挟まれた中空部分を有する二重構造
のものとして構成し、この中空部分に滞留させた滞留水
を採取してその水質を管理することにより行われるの
で、漏出した汚染水の拡散を防止しつつ、広範囲にわた
って、仕切り壁からの汚染水の漏出状況を適確に把握す
ることができる。As described above, according to the method for controlling contaminated water leaking from the partition wall of the present invention, the partition wall has a double structure having a hollow portion sandwiched between the inner wall and the outer wall. This is done by collecting the accumulated water accumulated in this hollow part and controlling the quality of the water, so while preventing the diffusion of contaminated water that has leaked out, the situation of leakage of contaminated water from the partition wall over a wide area. Can be accurately grasped.
【００２９】また、中空部分に注水して、これの内部の
水位を仕切り壁で囲まれる領域内の水位より高い水位に
保持すれば、内壁を挟んだ内外の水頭差により、内壁か
らの汚染水の漏出を容易に防止することができ、これに
よって、周囲の地盤への汚染水の拡散を、より確実に防
止することができる。Further, if water is injected into the hollow portion and the water level inside the hollow portion is maintained at a higher water level than the water level in the area surrounded by the partition wall, the contaminated water from the inner wall is generated due to the water head difference between the inner wall and the outer wall. It is possible to easily prevent the leakage of water, and thereby more reliably prevent the contaminated water from diffusing into the surrounding ground.
【図１】この発明の一実施例にかるる汚染水の管理方法
により、仕切り壁から漏出する汚染水を管理する状況を
示す説明図である。FIG. 1 is an explanatory diagram showing a situation in which contaminated water leaking from a partition wall is managed by a contaminated water management method according to an embodiment of the present invention.
【図２】（ａ）及び（ｂ）は、内壁と外壁とで挟まれた
中空部分を有する二重構造の仕切り壁の態様を例示する
断面図である。2A and 2B are cross-sectional views illustrating an embodiment of a partition wall having a double structure having a hollow portion sandwiched between an inner wall and an outer wall.
【図３】従来の汚染水の漏出管理方法の一例を示す説明
図である。。FIG. 3 is an explanatory diagram showing an example of a conventional leak water management method. .
１０ 遮水壁（仕切り壁） １１ 投入材 １５ 汚染水 １６ 内壁 １７ 外壁 １８ 中空部分 １９ モニタリング井戸 ２０ 仕切り壁で囲まれる領域 10 Impermeable wall (partition wall) 11 Input material 15 Contaminated water 16 Inner wall 17 Outer wall 18 Hollow part 19 Monitoring well 20 Area surrounded by partition wall
Claims (2)
廃棄物、埋立て土砂等の投入材から浸出する汚染水が、
仕切り壁の欠損箇所等を経て仕切り壁の外部に漏出する
のを防止するための地下汚染水の管理方法であって、 前記仕切り壁を、内壁と外壁とで挟まれた中空部分を有
する二重構造のものとして構成し、この中空部分に滞留
させた滞留水を採取してその水質を管理することによ
り、内壁からの汚染水の漏出状況を把握することを特徴
とする仕切り壁から漏出する汚染水の管理方法。1. Contaminated water leaching from input materials such as waste and landfill sand, which are input into the area surrounded by the partition wall,
A method of managing underground contaminated water for preventing leakage to the outside of a partition wall through a partition wall loss part or the like, wherein the partition wall has a hollow portion sandwiched between an inner wall and an outer wall. Contamination leaking from the partition wall characterized by grasping the leaked state of contaminated water from the inner wall by collecting the accumulated water accumulated in this hollow part and controlling the water quality How to manage water.
域内の水位より高い水位となるよう注水し、内壁を挟ん
だ内外の水頭差により、内壁からの汚染水の漏出を防止
することを特徴とする請求項１に記載の仕切り壁から漏
出する汚染水の管理方法。2. The hollow part is prevented from leaking contaminated water from the inner wall by pouring water so that the water level is higher than the water level in the region surrounded by the partition wall, and the water head difference between the inner wall and the outer wall. The method for managing contaminated water leaking from the partition wall according to claim 1, which is characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7047216A JP2943647B2 (en) | 1995-03-07 | 1995-03-07 | Management method of contaminated water leaking from partition walls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7047216A JP2943647B2 (en) | 1995-03-07 | 1995-03-07 | Management method of contaminated water leaking from partition walls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08246485A true JPH08246485A (en) | 1996-09-24 |
| JP2943647B2 JP2943647B2 (en) | 1999-08-30 |
Family
ID=12768979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7047216A Expired - Lifetime JP2943647B2 (en) | 1995-03-07 | 1995-03-07 | Management method of contaminated water leaking from partition walls |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2943647B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003033759A (en) * | 2001-07-26 | 2003-02-04 | Kajima Corp | Contaminant spread prevention method using water retaining type underground wall |
| JP2012117332A (en) * | 2010-12-03 | 2012-06-21 | Mirai Construction Co Ltd | Impervious wall structure |
| JP2013011597A (en) * | 2011-06-02 | 2013-01-17 | Shimizu Corp | Burial disposal facility of waste and burial disposal method of waste |
| JP2014052359A (en) * | 2012-09-10 | 2014-03-20 | Shimizu Corp | Method for injecting water into gap filler |
| JP2014136198A (en) * | 2013-01-17 | 2014-07-28 | Takenaka Komuten Co Ltd | Earthquake-proof type contaminated soil enclosure structure |
-
1995
- 1995-03-07 JP JP7047216A patent/JP2943647B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003033759A (en) * | 2001-07-26 | 2003-02-04 | Kajima Corp | Contaminant spread prevention method using water retaining type underground wall |
| JP2012117332A (en) * | 2010-12-03 | 2012-06-21 | Mirai Construction Co Ltd | Impervious wall structure |
| JP2013011597A (en) * | 2011-06-02 | 2013-01-17 | Shimizu Corp | Burial disposal facility of waste and burial disposal method of waste |
| JP2014052359A (en) * | 2012-09-10 | 2014-03-20 | Shimizu Corp | Method for injecting water into gap filler |
| JP2014136198A (en) * | 2013-01-17 | 2014-07-28 | Takenaka Komuten Co Ltd | Earthquake-proof type contaminated soil enclosure structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2943647B2 (en) | 1999-08-30 |
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