JPH08109651A - Cut-off method of deep well in building work - Google Patents
Cut-off method of deep well in building workInfo
- Publication number
- JPH08109651A JPH08109651A JP27298594A JP27298594A JPH08109651A JP H08109651 A JPH08109651 A JP H08109651A JP 27298594 A JP27298594 A JP 27298594A JP 27298594 A JP27298594 A JP 27298594A JP H08109651 A JPH08109651 A JP H08109651A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- water
- box
- pump
- well
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は建築工事における深井戸
の止水方法に関する。例えば高層のビルディングを建築
する場合、地下水位よりも下方にその基礎部分や地階部
分が建築されることが多い。このような場合、基礎部分
や地階部分の建築に先立って、地下水位を下げる必要が
あり、そのために深井戸が掘削される。この深井戸は、
地下水位よりも下方の基礎部分や地階部分の建築後にお
いては不要のものであり、そのまま放置すると、該深井
戸から地下水位の変動もあって地下水が漏れ出したり、
或は溢れ出るので、完全な止水対策を施しておく必要が
ある。本発明はかかる深井戸の止水方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of stopping water in a deep well in construction work. For example, when building a high-rise building, the foundation and basement are often constructed below the groundwater level. In such a case, it is necessary to lower the groundwater level prior to the construction of the foundation part and the basement part, and therefore a deep well will be drilled. This deep well is
It is unnecessary after construction of the foundation and basement below the groundwater level, and if left as it is, groundwater may leak from the deep well due to fluctuations in groundwater level,
Or it may overflow, so it is necessary to take complete water-stop measures. The present invention relates to such a deep well water stopping method.
【０００２】[0002]
【従来の技術】従来、上記のような深井戸の止水方法と
して一般に、井戸管内にコンクリートを投入して、井戸
管全体を埋封することが行なわれている。ところが、こ
の従来法には、地下水の浸漬下にある井戸管に対してコ
ンクリートが充分に密着せず、井戸管とコンクリートと
の間の隙間を通って地下水が漏れ出るという欠点があ
る。また従来、別の止水方法として、井戸管の上部に蓋
を溶接し、井戸管を密封することも行なわれている。と
ころが、この従来法には、多くの場合に井戸管から地下
水が溢れ出る状況下でその上部に蓋を溶接しなければな
らないため、溶接作業が誠に厄介であり、溶接それ自体
も確実に行ない難く、井戸管の上部から地下水が漏れ出
るという欠点がある。従来法では、建物の建築後におい
ても、井戸管から漏れ出した地下水を絶えず汲出してい
るというのが実情である。2. Description of the Related Art Conventionally, as a method of stopping water in a deep well as described above, generally, concrete is put into a well pipe to embed the entire well pipe. However, this conventional method has a drawback in that the concrete does not sufficiently adhere to the well pipe that is immersed in the ground water, and the ground water leaks out through the gap between the well pipe and the concrete. Further, conventionally, as another water stopping method, a lid is welded to the upper part of the well pipe to seal the well pipe. However, in this conventional method, the lid must be welded to the upper portion of the well pipe in many cases when the groundwater overflows, so the welding work is extremely troublesome and the welding itself is difficult to reliably perform. However, there is a drawback that groundwater leaks from the upper part of the well pipe. According to the conventional method, the groundwater leaked from the well pipe is constantly pumped out even after the building is constructed.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来法では、建物の建築に際して掘削した
深井戸の井戸管を完全に密封することができず、該井戸
管から地下水位の変動もあって地下水が漏れ出る点であ
る。The problem to be solved by the present invention is that the conventional method cannot completely seal the well pipe of the deep well excavated at the time of building a building, and the groundwater level from the well pipe cannot be completely sealed. This is also a point where groundwater leaks out.
【０００４】[0004]
【課題を解決するための手段】しかして本発明は、下記
の第１工程、第２工程及び第３工程を経ることを特徴と
する建築工事における深井戸の止水方法に係る。 第１工程：掘削した深井戸内へポンプを投入して地下水
を汲上げつつ、井戸管の上部に止水管を固定し、該止水
管の上部を残してその周囲に耐圧コンクリートを打設す
る工程 第２工程：耐圧コンクリート上に止水管の上部を包囲す
る上面開放の箱を載置し、ポンプを該箱に引き上げて、
該止水管の上部に蓋をネジ止めし、該止水管の上部を密
封する工程 第３工程：ポンプを箱から引き上げて、該箱内に耐圧コ
ンクリートを打設する工程DISCLOSURE OF THE INVENTION The present invention, however, relates to a method of stopping water in a deep well in a construction work, which comprises the following first step, second step and third step. First step: a step of putting a pump into the excavated deep well to pump up groundwater, fixing a water stop pipe to the upper part of the well pipe, and placing pressure resistant concrete around the water cut pipe leaving the upper part thereof Second step: Place an open top box surrounding the upper part of the water stop pipe on the pressure-resistant concrete, pull up the pump to the box,
Step of screwing a lid to the upper portion of the water shut off pipe and sealing the upper portion of the water shut off pipe 3rd step: pulling up the pump from the box and placing pressure resistant concrete in the box
【０００５】本発明の第１工程では、掘削した深井戸内
へポンプを投入して地下水を汲上げつつ、井戸管の上部
に止水管を固定し、該止水管の上部を残してその周囲に
耐圧コンクリートを打設する。地下水位よりも下方に基
礎部分や地階部分を建築する場合、その建築に先立っ
て、深井戸を掘削し、井戸管を埋設して、その上部を地
表上に出した状態で井戸管内へ投入したポンプにより地
下水を汲上げ、周囲の地下水位を下げた後、井戸管の周
囲の地面に地盤コンクリートを打設する。本発明では、
この段階で一時的にポンプを井戸管から引き上げ、井戸
管の上部に止水管を載置し、再びポンプを止水管を介し
て井戸管内へ投入する。そして投入したポンプで地下水
を汲上げつつ、井戸管の上部に止水管を例えば溶接によ
り固定し、井戸管と止水管との間を密封した後、止水管
の上部を残してその周囲に耐圧コンクリートを打設す
る。In the first step of the present invention, a pump is put into a deep well that has been excavated to pump groundwater, and a water stop pipe is fixed to the upper part of the well pipe, and the upper part of the water stop pipe is left around the water pipe. Place pressure-resistant concrete. When constructing a foundation or basement below the groundwater level, a deep well was excavated and a well pipe was buried prior to the construction, and the upper part of the well was put into the well pipe with the top surface exposed. After pumping groundwater and lowering the surrounding groundwater level, ground concrete will be placed on the ground around the well pipe. In the present invention,
At this stage, the pump is temporarily pulled up from the well pipe, the water stop pipe is placed on the upper part of the well pipe, and the pump is again put into the well pipe through the water stop pipe. Then, while pumping groundwater with the pump that was put in, the water pipe is fixed to the upper part of the well pipe by, for example, welding, and the space between the well pipe and the water pipe is sealed. To place.
【０００６】止水管は短尺な筒状に形成されているが、
その中ほど外周にリング状の止水板が全周に亘って溶接
されているものが好ましい。止水板は止水管の上部を残
してその周囲に耐圧コンクリートを打設する際、該耐圧
コンクリートに埋設されるが、かかる止水板によって止
水管の外周と打設した耐圧コンクリートとの間の隙間を
通って地下水が漏れ出るのをより確実に防止できるから
である。また止水管は、その上部にフランジが周設され
ており、該フランジにボルトを通すための複数の貫通孔
が穿設されているものが好ましい。後述する第２工程に
おいて、止水管の上部に上記のようなフランジを利用し
て蓋をネジ止めし、止水管の上部を蓋で密封するのに便
利であるからである。Although the water shut off pipe is formed in a short tubular shape,
It is preferable that a ring-shaped water blocking plate is welded to the outer periphery in the middle thereof over the entire circumference. The water stop plate is embedded in the pressure resistant concrete when the pressure resisting concrete is placed around the water leaving pipe, leaving the upper part of the water stop pipe, and by the water stop plate between the outer periphery of the water stop pipe and the placed pressure resistant concrete. This is because it is possible to more reliably prevent groundwater from leaking through the gap. Further, it is preferable that the water shut-off pipe is provided with a flange around the upper part thereof, and a plurality of through holes for passing bolts are bored in the flange. This is because it is convenient to screw the lid to the upper portion of the water shut-off pipe using the flange as described above and seal the upper portion of the water shut-off pipe with the lid in the second step described later.
【０００７】本発明の第２工程では、止水管の上部を残
してその周囲に打設した耐圧コンクリート上に止水管を
包囲する上面開放の箱を載置し、ポンプを箱に引き上げ
た後、止水管の上部に蓋をネジ止めし、止水管の上部を
密封する。箱は全体として短尺な有底筒状に形成されて
おり、その底面に止水管を挿入するための開口が設けら
れているものである。蓋は平板状に形成されているが、
その周端部にボルトを通すための複数の貫通孔が穿設さ
れているものが好ましい。この場合、止水管の上部のフ
ランジにリング状のパッキンを介して上記のような蓋を
載置し、双方の貫通孔にボルトを通して、ボルトをナッ
トで締め付けるという簡単な作業で、止水管の上部を蓋
で密封することができる。In the second step of the present invention, a box with an open upper surface surrounding the water shut-off pipe is placed on the pressure-resistant concrete placed around the water shut-off pipe while leaving the upper part of the water shut-off pipe, and after the pump is pulled up to the box, Screw the lid on the top of the water stop tube to seal the top of the water stop tube. The box is formed in the shape of a short cylinder with a bottom as a whole, and an opening for inserting the water shut-off pipe is provided on the bottom surface thereof. The lid is formed like a flat plate,
It is preferable that a plurality of through holes are formed in the peripheral end portion for the bolts to pass therethrough. In this case, the lid like above is placed on the flange of the top of the water shut-off pipe via the ring-shaped packing, the bolt is passed through both through holes, and the bolt is tightened with the nut. Can be sealed with a lid.
【０００８】側面で観音開きが可能な箱を用いる場合に
は、耐圧コンクリート上に止水管を包囲して箱を載置す
るに際し、前もってポンプを井戸管から引き上げる必要
はないが、一体的に構成された箱を用いる場合には、ポ
ンプを井戸管から引き上げた後、箱を載置する。[0008] When a box that can be opened on the side is used, it is not necessary to pull up the pump from the well tube in advance when the box is placed by enclosing the waterproof pipe on the pressure resistant concrete, but it is constructed integrally. When using a box, place the box after pulling up the pump from the well pipe.
【０００９】第２工程では、耐圧コンクリート上に止水
管を包囲して箱を載置した状態で、引き続きポンプで地
下水を汲上げつつ、箱の周囲に更に耐圧コンクリートを
打設した後、ポンプを箱に引き上げるのが好ましい。箱
を固定することにより、その後の作業が行ない易いから
である。またポンプを箱に引き上げた後、止水管の上部
から箱に地下水が溢れ出るような場合には、ポンプで箱
に溢れ出た地下水を汲上げつつ、止水管の上部に蓋をネ
ジ止めするのが好ましい。止水管の上部を蓋で密封する
作業が行ない易いからである。In the second step, with the box placed on the pressure-resistant concrete surrounding the waterproof pipe, while pumping the groundwater continuously with the pump, the pressure-resistant concrete is placed around the box, and then the pump is put on. It is preferable to pull it up in a box. This is because by fixing the box, the subsequent work is easy to perform. If groundwater overflows from the top of the water shutoff pipe into the box after the pump is pulled up to the box, use a pump to pump the groundwater that overflowed into the box while screwing the lid onto the top of the water shutoff pipe. Is preferred. This is because it is easy to perform the work of sealing the upper part of the water shutoff pipe with the lid.
【００１０】本発明の第３工程では、止水管の上部を蓋
で密封した後、ポンプを箱から引き上げて、箱内に耐圧
コンクリートを打設する。かくして、掘削した深井戸を
完全に止水することができる。In the third step of the present invention, after sealing the upper part of the water shut off pipe with the lid, the pump is pulled out from the box and the pressure resistant concrete is placed in the box. Thus, it is possible to completely stop the excavated deep well.
【００１１】[0011]
【実施例】図１は本発明の一実施状態を略示する縦断面
図である。図１は本発明の第２工程を終了した状態を例
示している。先ず第１工程では、深井戸を掘削し、井戸
管１１を埋設して、その上部を地表上に出した状態で井
戸管１１の内部へ投入したポンプ２１により地下水を汲
上げ、周囲の地下水位を下げた後、井戸管１１の周囲の
地面に地盤コンクリート３１を打設する。ここで一時的
にポンプ２１を井戸管１１から引き上げ、井戸管１１の
上部に止水管４１を載置し、再びポンプ２１を井戸管１
１の内部へ投入する。そして投入したポンプ２１で地下
水を汲上げつつ、井戸管１１の上部に止水管４１を溶接
し、井戸管１１と止水管４１との間を密封した後、止水
管４１の上部を残してその周囲に耐圧コンクリート５１
を打設する。1 is a vertical sectional view schematically showing an embodiment of the present invention. FIG. 1 illustrates a state in which the second step of the present invention has been completed. First, in the first step, a deep well is excavated, a well pipe 11 is buried, and groundwater is pumped into the well pipe 11 with the upper part of the well pipe 11 exposed to the surface of the earth. After lowering, the ground concrete 31 is poured on the ground around the well pipe 11. Here, the pump 21 is temporarily pulled up from the well pipe 11, the water stop pipe 41 is placed on the upper part of the well pipe 11, and the pump 21 is again attached to the well pipe 1.
Put into 1. Then, while pumping the ground water with the pump 21, the welded water pipe 41 is welded to the upper part of the well pipe 11 to seal the gap between the well pipe 11 and the water pipe 41, and then the upper part of the water pipe 41 is left and its surroundings. Pressure resistant concrete 51
To place.
【００１２】止水管４１は井戸管１１と同一径を有する
短尺な筒状に形成されているが、その中ほど外周にリン
グ状の止水板４２が全周に亘って溶接されており、その
上部にフランジ４３が周設されていて、フランジ４３に
はボルトを通すための図示しない複数の貫通孔が穿設さ
れている。The water shut-off pipe 41 is formed in a short tubular shape having the same diameter as the well pipe 11, and a ring-shaped water shut-off plate 42 is welded over the entire circumference in the middle thereof. A flange 43 is provided around the upper portion, and a plurality of through holes (not shown) are formed in the flange 43 for passing bolts.
【００１３】次に第２工程では、一時的にポンプ２１を
井戸管１１から引き上げ、耐圧コンクリート５１の上面
に止水管４２を包囲して上面開放の箱６１を載置し、再
びポンプ２１を井戸管１１の内部へ投入して、引き続き
投入したポンプ２１で地下水を汲上げつつ、箱６１の周
囲に耐圧コンクリート５２を打設する。そしてポンプ２
１を箱６１に引き上げ、引き上げたポンプ６１で止水管
４１の上部から箱６１へ溢れ出てくる地下水を汲上げつ
つ、止水管４１の上部を蓋７１で密封する。Next, in the second step, the pump 21 is temporarily pulled up from the well pipe 11, the watertight pipe 42 is surrounded by the pressure-resistant concrete 51, and a box 61 having an open upper surface is placed thereon. The pressure-resistant concrete 52 is poured around the box 61 while being poured into the pipe 11 and pumping the ground water with the pump 21 continuously fed. And pump 2
1 is pulled up to the box 61, and while pumping up the pump 61, the upper portion of the water shutoff pipe 41 is sealed by the lid 71 while the groundwater overflowing from the upper portion of the water shutoff pipe 41 to the box 61 is being pumped up.
【００１４】箱６１は全体として短尺な有底筒状に一体
形成されており、その底面には止水管４１及びフランジ
４２を挿入するための開口が設けられている。また蓋７
１は平板状に形成されており、その周端部にはボルトを
通すための図示しない複数の貫通孔が穿設されている。
止水管４１の上部のフランジ４２にリング状のパッキン
を介して蓋７１を載置し、双方の貫通孔にボルトを通し
て、ボルトをナットで締め付けることにより、止水管４
１の上部を蓋７１で密封している。The box 61 is integrally formed in a tubular shape having a short bottom as a whole, and an opening for inserting the water stop pipe 41 and the flange 42 is provided in the bottom surface thereof. Also the lid 7
The reference numeral 1 is formed in a flat plate shape, and a plurality of through holes (not shown) for passing bolts are formed in a peripheral end portion thereof.
The lid 71 is placed on the flange 42 at the top of the water shutoff pipe 41 via a ring-shaped packing, the bolts are passed through both through holes, and the bolts are tightened with nuts.
The upper part of 1 is sealed with a lid 71.
【００１５】最後に第３工程では、ポンプ２１を箱６１
から引き上げ、箱６１の内部に耐圧コンクリートを打設
する。かくして、掘削した深井戸を完全に止水する。Finally, in the third step, the pump 21 is placed in the box 61.
Then, pressure-resistant concrete is placed inside the box 61. Thus, the drilled deep well is completely shut off.
【００１６】[0016]
【発明の効果】既に明らかなように、以上説明した本発
明には、建物の建築に際して掘削した深井戸の井戸管を
完全に密封できるため、井戸管から地下水が漏れ出るの
を防止できるという効果がある。As is apparent from the above, according to the present invention described above, since the well pipe of the deep well excavated at the time of building a building can be completely sealed, it is possible to prevent groundwater from leaking from the well pipe. There is.
【図１】本発明の一実施状態を略示する縦断面図。FIG. 1 is a vertical sectional view schematically showing an embodiment of the present invention.
１１・・・井戸管、２１・・・ポンプ、３１・・・地盤
コンクリート、４１・・・止水管、４２・・・止水板、
４３・・・フランジ、５１，５２・・・耐圧コンクリー
ト、６１・・・箱、７１・・・蓋11 ... well pipe, 21 ... pump, 31 ... ground concrete, 41 ... water pipe, 42 ... water plate,
43 ... Flange, 51, 52 ... Pressure-resistant concrete, 61 ... Box, 71 ... Lid
Claims (4)
を経ることを特徴とする建築工事における深井戸の止水
方法。 第１工程：掘削した深井戸内へポンプを投入して地下水
を汲上げつつ、井戸管の上部に止水管を固定し、該止水
管の上部を残してその周囲に耐圧コンクリートを打設す
る工程 第２工程：耐圧コンクリート上に止水管の上部を包囲す
る上面開放の箱を載置し、ポンプを該箱に引き上げて、
該止水管の上部に蓋をネジ止めし、該止水管の上部を密
封する工程 第３工程：ポンプを箱から引き上げて、該箱内に耐圧コ
ンクリートを打設する工程1. A method of stopping water in a deep well in a construction work, which comprises the following first step, second step and third step. First step: a step of putting a pump into the excavated deep well to pump up groundwater, fixing a water stop pipe to the upper part of the well pipe, and placing pressure resistant concrete around the water cut pipe leaving the upper part thereof Second step: Place an open top box surrounding the upper part of the water stop pipe on the pressure-resistant concrete, pull up the pump to the box,
Step of screwing a lid to the upper portion of the water shut off pipe and sealing the upper portion of the water shut off pipe 3rd step: pulling up the pump from the box and placing pressure resistant concrete in the box
にリング状の止水板を溶接した止水管を固定する請求項
１記載の建築工事における深井戸の止水方法。2. A method of stopping water in a deep well in a construction work according to claim 1, wherein in the first step, a water stop pipe having a ring-shaped water stop plate welded to the outer periphery is fixed to the upper part of the well pipe.
上面に止水管の上部を包囲する上面開放の箱を載置し、
該箱の周囲に更に耐圧コンクリートを打設した後、ポン
プを該箱に引き上げる請求項１又は２記載の建築工事に
おける深井戸の止水方法。3. In the second step, a box having an open upper surface is placed on the upper surface of the pressure-resistant concrete to surround the upper portion of the water shut-off pipe,
The method of stopping water in a deep well in a construction work according to claim 1 or 2, wherein after the pressure-resistant concrete is further cast around the box, the pump is pulled up to the box.
げ、該ポンプで止水管の上部から該箱に溢れ出る地下水
を汲上げつつ、該止水管の上部に蓋をネジ止めする請求
項１、２又は３記載の建築工事における深井戸の止水方
法。4. The method of claim 1, wherein in the second step, the pump is pulled up to the box, and while the pump pumps up groundwater overflowing from the upper portion of the water shutoff pipe to the box, the lid is screwed to the upper portion of the water shutoff pipe. A method of stopping water in a deep well in the construction work described in 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27298594A JPH08109651A (en) | 1994-10-11 | 1994-10-11 | Cut-off method of deep well in building work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27298594A JPH08109651A (en) | 1994-10-11 | 1994-10-11 | Cut-off method of deep well in building work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08109651A true JPH08109651A (en) | 1996-04-30 |
Family
ID=17521542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27298594A Pending JPH08109651A (en) | 1994-10-11 | 1994-10-11 | Cut-off method of deep well in building work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08109651A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345301A (en) * | 2011-07-08 | 2012-02-08 | 天津二十冶建设有限公司 | New method for plugging dewatering well in basement |
| CN102797266A (en) * | 2012-08-31 | 2012-11-28 | 天津住宅集团建设工程总承包有限公司 | Well sealing waterproof construction method for dewatering well |
| CN103161173A (en) * | 2013-03-14 | 2013-06-19 | 中国华冶科工集团有限公司 | Shut-in construction method of pumping shaft in basement base plate |
| CN104947700A (en) * | 2015-07-01 | 2015-09-30 | 中国建筑一局(集团)有限公司 | Well closing casing pipe used for dewatering well, dewatering well and well closing method for dewatering well |
| CN105178364A (en) * | 2015-06-29 | 2015-12-23 | 江苏五环建设有限公司 | Underground building light precipitation well point post-cast strip anti-seepage construction method |
| CN105332383A (en) * | 2014-08-13 | 2016-02-17 | 江苏信拓建设(集团)股份有限公司 | Device for rapidly blocking dewatering pipe well through drainage and decompression and method of device |
| CN106836251A (en) * | 2017-02-24 | 2017-06-13 | 中国十七冶集团有限公司 | A kind of new pre-buried deformation joint anti-seepage structure of the pipe well borehole wall and its construction method |
| CN107268646A (en) * | 2017-08-04 | 2017-10-20 | 北京建工土木工程有限公司 | A kind of high hydraulic pressure well-covering device for dewatering well and its construction method |
| CN108425372A (en) * | 2018-05-03 | 2018-08-21 | 中国建筑第二工程局有限公司 | A kind of protective device and foundation pit shut-in well method for the uninterrupted precipitation in foundation pit part |
| CN113089701A (en) * | 2021-04-15 | 2021-07-09 | 北京天润建设有限公司 | Rock foundation low-point precipitation construction process and construction device |
-
1994
- 1994-10-11 JP JP27298594A patent/JPH08109651A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345301A (en) * | 2011-07-08 | 2012-02-08 | 天津二十冶建设有限公司 | New method for plugging dewatering well in basement |
| CN102797266A (en) * | 2012-08-31 | 2012-11-28 | 天津住宅集团建设工程总承包有限公司 | Well sealing waterproof construction method for dewatering well |
| CN103161173A (en) * | 2013-03-14 | 2013-06-19 | 中国华冶科工集团有限公司 | Shut-in construction method of pumping shaft in basement base plate |
| CN105332383A (en) * | 2014-08-13 | 2016-02-17 | 江苏信拓建设(集团)股份有限公司 | Device for rapidly blocking dewatering pipe well through drainage and decompression and method of device |
| CN105178364A (en) * | 2015-06-29 | 2015-12-23 | 江苏五环建设有限公司 | Underground building light precipitation well point post-cast strip anti-seepage construction method |
| CN105178364B (en) * | 2015-06-29 | 2017-04-19 | 江苏五环建设有限公司 | Underground building light precipitation well point post-cast strip anti-seepage construction method |
| CN104947700A (en) * | 2015-07-01 | 2015-09-30 | 中国建筑一局(集团)有限公司 | Well closing casing pipe used for dewatering well, dewatering well and well closing method for dewatering well |
| CN106836251A (en) * | 2017-02-24 | 2017-06-13 | 中国十七冶集团有限公司 | A kind of new pre-buried deformation joint anti-seepage structure of the pipe well borehole wall and its construction method |
| CN107268646A (en) * | 2017-08-04 | 2017-10-20 | 北京建工土木工程有限公司 | A kind of high hydraulic pressure well-covering device for dewatering well and its construction method |
| CN107268646B (en) * | 2017-08-04 | 2023-03-21 | 北京建工土木工程有限公司 | High-water-pressure-drop well sealing device and construction method thereof |
| CN108425372A (en) * | 2018-05-03 | 2018-08-21 | 中国建筑第二工程局有限公司 | A kind of protective device and foundation pit shut-in well method for the uninterrupted precipitation in foundation pit part |
| CN113089701A (en) * | 2021-04-15 | 2021-07-09 | 北京天润建设有限公司 | Rock foundation low-point precipitation construction process and construction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH08109651A (en) | Cut-off method of deep well in building work | |
| KR200388001Y1 (en) | Sealed top protector device for cable replacement. | |
| CN110629775B (en) | Construction method for quickly sealing foundation pit dewatering well | |
| CN107604937A (en) | The foundation structure of wind-driven generator and its construction method of basic annular type with pre-buried madjack pipe | |
| KR100241472B1 (en) | A device for closing the working hole of sewer pipe | |
| JP2769801B2 (en) | Installation method of FRP double shell tank for underground liquid hazardous materials | |
| CN207862959U (en) | It is a kind of for the shut-in well end pipe of plugging dewatering well and building structure | |
| CN112301995A (en) | Prefabricated composite reinforcement structure serving as precipitation grouting channel and construction method | |
| JPH09209361A (en) | Pilingh method in pit structure | |
| JP3902828B2 (en) | Connection method between underwater structure and shield tunnel | |
| JP2004270155A (en) | Water stopping material injection method and levee body | |
| JP3433893B2 (en) | Mouth stop device for small diameter propulsion | |
| CN112982462B (en) | Construction method for large-aperture pressurized water blocking of concrete member | |
| KR20090032323A (en) | A deep well cover and protective device | |
| KR900008934B1 (en) | Checking method of airtightness | |
| JP3200696B2 (en) | How to protect the starting wellhead | |
| JP3453671B2 (en) | How to build an underwater tunnel | |
| JP2008082557A (en) | Method of laying pipeline underground | |
| JP2571978Y2 (en) | Sealing plug | |
| JP2022186157A (en) | Earth retaining wall, and construction method of earth retaining wall | |
| JP2002089174A (en) | Shaft opening structure | |
| KR100580881B1 (en) | Waterproof construction method of farming channel underground valve room | |
| JP2001074165A (en) | Connection box for piping | |
| JPS645196B2 (en) | ||
| JPS60233245A (en) | Chemical injection and water stopping construction method from inner surface of pipe by three-direction hermetical closing of t-shaped branched pipe attachment part of small diameter sewage pipe embedded in ground |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040412 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20040419 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040927 |