JPH07158400A - Installation method for spring water pressure measuring pipe in ground - Google Patents
Installation method for spring water pressure measuring pipe in groundInfo
- Publication number
- JPH07158400A JPH07158400A JP26596793A JP26596793A JPH07158400A JP H07158400 A JPH07158400 A JP H07158400A JP 26596793 A JP26596793 A JP 26596793A JP 26596793 A JP26596793 A JP 26596793A JP H07158400 A JPH07158400 A JP H07158400A
- Authority
- JP
- Japan
- Prior art keywords
- water pressure
- pressure gauge
- packer
- cloth
- packers
- 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
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地盤内湧水圧測定パイ
プの設置方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a groundwater pressure measuring pipe.
【０００２】[0002]
【従来の技術】ダム、斜面、放射性又は有毒産業廃棄物
処分、エネルギの地下備蓄等の岩盤を対象にした分野で
は、その設計、施工、安全管理に関し、地盤内の複雑な
地下水圧を把握する必要がある。2. Description of the Related Art In the field of rocks such as dams, slopes, radioactive or toxic industrial waste disposal, underground storage of energy, etc., the complicated groundwater pressure in the ground is grasped regarding the design, construction and safety management. There is a need.
【０００３】その測定を行う複数箇所に水圧計を配設し
たいわゆるＭＧＬ（Ｍｕｌｔｉｐｌｅ Ｇｒｏｕｎｄｗ
ａｔｅｒ ＬｅｖｅｌＭｅａｓｕｒｉｎｇ）システムの
測定パイプの設置方法には、バックフィル法とパッカ法
とがある。A so-called MGL (Multiple Groundw) in which water pressure gauges are arranged at a plurality of locations for performing the measurement.
There are a backfill method and a pucker method as a method of installing the measurement pipe of the atter Level Measuring system.
【０００４】［発明が解決しようとする課題］孔内湧水
を伴うボーリング孔に、バックフィル法で測定パイプを
設置すると、湧水の上昇に伴って孔内に注入したシール
材が硬化する間に移動すなわち上昇したり、湧水量によ
っては孔外に噴出し、意図する位置にシール材を設置で
きない。したがって、測定パイプの設置は、不可能であ
る。[Problems to be Solved by the Invention] When a measuring pipe is installed in the borehole accompanied by spring water in the hole by the backfill method, the sealing material injected into the hole is cured while the spring water rises. Therefore, the seal material cannot be installed at the intended position due to the movement to ascend or ascent, or the spouting out of the hole depending on the amount of spring water. Therefore, it is not possible to install a measuring pipe.
【０００５】他方、同様の条件下でパッカ法により測定
パイプを設置する場合は、注入したシール材は布パッカ
の中に保留されているので、シール材の移動は発生しな
いで、基本的には測定パイプの設置は可能である。しか
し、現状のパッカ法は、布パッカの中にシール材が充填
されたことを確認したのち、直ちに注入を終了し、養生
にはいる。このとき、湧水圧がシール材の自重圧に勝る
と、孔壁と布パッカとの間隙を介して地下水が上昇又は
噴出し、その間隙を残した状態でシール材が硬化する。
したがって、結果的にシール効果は期待できない。On the other hand, when the measuring pipe is installed by the Pucker method under the same conditions, the injected sealant is retained in the cloth packer, so that the sealant does not move, and basically the sealant does not move. It is possible to install a measuring pipe. However, in the current packer method, after confirming that the sealing material is filled in the cloth packer, the injection is immediately terminated and the curing is started. At this time, if the spring water pressure exceeds the self-weight pressure of the sealing material, groundwater rises or squirts through the gap between the hole wall and the cloth packer, and the sealing material hardens with the gap left.
Therefore, as a result, the sealing effect cannot be expected.
【０００６】また、パッカ法のために、布パッカを単独
に用いたＭＧＬシステムの測定パイプが提供されている
が、シール効果を発揮させるためには、湧水圧以上の圧
力でシール材が硬化するまで注入を続ける必要があるた
め、布パッカからにじみ出るシール材の量が無視できな
くなり、水圧計を埋め殺す可能性がある。Further, for the packer method, a measuring pipe of an MGL system using a cloth packer alone is provided, but in order to exert a sealing effect, the sealing material is cured at a pressure higher than the spring pressure. Since it is necessary to continue injection, the amount of sealing material that oozes out from the cloth packer cannot be ignored, and there is a possibility of filling up the water pressure gauge.
【０００７】本発明は、上記した問題を解決するために
なされたもので、布パッカのシール効果を向上させて地
盤内湧水圧測定パイプの設置方法を提供することを目的
としている。The present invention has been made to solve the above problems, and an object thereof is to provide a method for installing a spring pressure measuring pipe in the ground by improving the sealing effect of the cloth packer.
【０００８】[0008]
【課題を解決するための手段】本発明による方法は、パ
イプの複数箇所に配設した水圧計の上下方にそれぞれ水
圧計保護用エアパッカを設け、これらの水圧計保護用エ
アパッカに連続して布パッカを設けた測定パイプをボー
リング孔に挿入し、一つの布パッカ上下方の水圧計保護
用エアパッカを膨出して一時的に孔内湧水を止めたのち
に該布パッカに湧水圧以上の圧力でシール材を注入し、
注入したシール材を養生したのち膨出した水圧計保護用
エアパッカを縮小して養生したシール材のシール効果を
確認し、以下同様の手順で残りの布パッカにシール材を
注入しシール効果を確認して測定パイプを設置すること
を特徴としている。According to the method of the present invention, water pressure gauge protecting air packers are provided above and below the water pressure gauges disposed at a plurality of locations on the pipe, and the water pressure gauge protecting air packers are continuously clothed. Insert a measuring pipe with a packer into the boring hole, bulge the air pressure gauge protection air packer above and below one cloth packer to temporarily stop the spring water in the hole, and then press the cloth packer above the spring pressure. Inject the sealing material with
After curing the injected sealing material, shrink the air packer for swelling the water pressure gauge, and check the sealing effect of the cured sealing material, and then inject the sealing material into the remaining cloth packing by the same procedure below to check the sealing effect. It is characterized by installing a measuring pipe.
【０００９】上記シール材には、ウレタン系シール材を
用いるのが好ましい。It is preferable to use a urethane type sealing material as the sealing material.
【００１０】[0010]
【作用】本発明による方法においては、布パッカの上下
方の水圧計保護用エアパッカを膨出して一時的に孔内湧
水を止めてシール材を注入し、シール材を養生してから
水圧計保護用エアパッカを縮小するので、良好なシール
体が形成され、シール効果が向上される。In the method according to the present invention, the water pressure gauge protecting air packers above and below the cloth packer are bulged to temporarily stop the spring water in the hole to inject the sealing material, and after curing the sealing material, the water pressure gauge is used. Since the protective air packer is reduced, a good sealing body is formed and the sealing effect is improved.
【００１１】[0011]
【実施例】以下図面を参照して本発明の実施例を説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１には、測定パイプ１の測定時の状態が
示されている。ボーリング孔Ｈ内に挿入された測定パイ
プ１には、複数（図示の例では３個）の水圧計部１Ａ
と、水圧計部１Ａの上下方の一対の水圧計保護用エアパ
ッカ１０と、水圧計保護用エアパッカ１０に連続する布
パッカ２０とが設けられ、布パッカ２０には、ウレタン
系のシール材２３が充填されている。FIG. 1 shows a state of the measuring pipe 1 during measurement. In the measurement pipe 1 inserted in the boring hole H, a plurality of (three in the illustrated example) water pressure gauge units 1A are provided.
And a pair of water pressure gauge protection air packers 10 above and below the water pressure gauge unit 1A, and a cloth packer 20 continuous to the water pressure gauge protection air packer 10. The cloth packer 20 is provided with a urethane-based sealing material 23. It is filled.
【００１３】なお、添付図面中の符号１Ｂは接続用のね
じ部を示し、符号３０は注入管等を示している。また、
図１において、布パッカ２０により下方から３区間にお
いて、それぞれ水圧測定対象区間Ａ及びシール区間Ｂが
画成されている。In the accompanying drawings, reference numeral 1B indicates a connecting screw portion, and reference numeral 30 indicates an injection pipe or the like. Also,
In FIG. 1, the cloth packer 20 defines a water pressure measurement target section A and a seal section B in three sections from below.
【００１４】図４において、水圧計２の上方は、小孔部
３によりフィルタ４を介して空室５に連通され、その空
室５には複数（図示の例では４個）の導水孔６が円周等
配に穿設されている。この空室５の上方と水圧計２の下
方とには、それぞれ上部止水金具７ａ、下部止水金具７
ｂが設けられ、上部止水金具７ａと空室５との間及び水
圧計２と下部止水金具７ｂとの間には、それぞれ管内シ
ール材（例えばエポキシ樹脂材）８が充填されている。
そして、水圧計２は、ケーブル９により地上の図示しな
い測定装置に接続されている。In FIG. 4, an upper part of the water pressure gauge 2 is communicated with a vacant chamber 5 through a filter 4 by a small hole portion 3, and the vacant chamber 5 has a plurality of (4 in the illustrated example) water guiding holes 6. Are pierced equally around the circumference. An upper water stop fitting 7a and a lower water stop fitting 7 are provided above the vacant chamber 5 and below the water pressure gauge 2, respectively.
b is provided, and a pipe seal material (for example, an epoxy resin material) 8 is filled between the upper water stop fitting 7a and the vacant chamber 5 and between the water pressure gauge 2 and the lower water stop fitting 7b.
The water pressure gauge 2 is connected by a cable 9 to a measuring device (not shown) on the ground.
【００１５】図５ないし図８において、水圧計保護用エ
アパッカ１０のゴムチューブ１１には、金具１２が連続
され、その金具１２には、２条の環状溝１３が形成され
ている。そして、布パッカ２０の取付部２１は、金具１
２に被せられ、環状溝１３が形成された部分においてバ
ンド状の固定金具２２により固定されている。5 to 8, a metal tube 12 of a water pressure gauge protecting air packer 10 is connected to a metal fitting 12, and the metal fitting 12 has two annular grooves 13. The mounting portion 21 of the cloth packer 20 is attached to the metal fitting 1
2 and is fixed by a band-shaped fixing metal fitting 22 in a portion where the annular groove 13 is formed.
【００１６】前記注入管等３０は、注入管３０ａ、水抜
き管３０ｂ、エアチューブ３０ｃからなっている。その
注入管３０ａは、シール材２３を布パッカ２０に圧送す
るもので、シール材２３の圧力損失を考慮し、ナイロン
製のチューブが用いられている。また、水抜き管３０ｂ
は、シール材２３の注入作業時に、布パッカ２０の上下
を水圧計保護用エアパッカで仕切ったシール区間に対し
行うので、そのシール区間に発生する過剰圧力を低減す
るものである。また、エアチューブ３０ｃは、水圧計保
護用エアパッカ１０に高圧ガスを供給、又は、水圧計保
護用エアパッカ１０内の高圧ガスを排出するものであ
る。なお、場合によっては布パッカを省略できる。The injection pipe 30 is composed of an injection pipe 30a, a water drain pipe 30b and an air tube 30c. The injection pipe 30a is for pumping the sealing material 23 to the cloth packer 20, and in consideration of the pressure loss of the sealing material 23, a nylon tube is used. Also, the drain pipe 30b
Is performed in the sealing section which is divided by the water pressure gauge protecting air packer above and below the cloth packer 20 at the time of injecting the sealing material 23, so that the excessive pressure generated in the sealing section is reduced. The air tube 30c supplies high pressure gas to the water pressure gauge protection air packer 10 or discharges high pressure gas from the water pressure gauge protection air packer 10. The cloth packer can be omitted depending on the case.
【００１７】次に、主として図９、１０を参照して測定
パイプ１の設置態様を説明する。Next, an installation mode of the measuring pipe 1 will be described mainly with reference to FIGS.
【００１８】先ず、シール材８の注入用加圧容器３１
に、開閉バルブ３２を備えたチューブ３３を介して高圧
ガス（例えば窒素）のボンベ３４を接続しておく。First, a pressure container 31 for injecting the sealing material 8
A cylinder 34 of high-pressure gas (for example, nitrogen) is connected via a tube 33 having an opening / closing valve 32.
【００１９】そこで、カウントを１とおき（ステップＳ
１）、シール材充填対象区間にボーリング孔Ｈの保存の
ために削孔時にケーシングパイプが挿入されている場
合、当該作業に支障の無いところまで該ケーシングパイ
プを予め引き抜いておく（ステップＳ２、Ｓ３）。Therefore, the count is set to 1 (step S
1) When the casing pipe is inserted into the seal material filling target section for the purpose of storing the boring hole H at the time of drilling, the casing pipe is pulled out in advance to a place where the work is not hindered (steps S2 and S3). ).
【００２０】次に、図示しないエアポンプにエアチュー
ブ３０ｃを接続し、エアポンプを作動してシール区間Ｂ
を画成する水圧計保護用エアパッカ１０に高圧エアを供
給し、該水圧計保護用エアパッカ１０を膨出させてボー
リング孔Ｈとの間をシールする（ステップＳ４）。次い
で、図示しないグラウトポンプに注入管３０ａを接続
し、グラウトポンプを作動して充填対象容積のシール材
８を布パッカ２０に注入する（ステップＳ５）。次い
で、注入用加圧容器３１に注入管３０ａを接続し、開閉
バルブ３２を開き、高圧窒素の圧力によりシール材８を
布パッカ２０に湧水圧以上の圧力で徐々に注入する（ス
テップＳ６）。この際、布パッカ２０をバーストさせな
いため、孔内水位等を考慮した上で、シール区間Ｂの最
深部で１０ｋｇｆ／ｃｍ2 を越えないように、レギュレ
ータを用いて圧送圧力を調整する。注入用加圧容器３１
内のシール材８がなくなったら追加し、シール材８が硬
化するまでこの作業を繰返す。Next, the air tube 30c is connected to an air pump (not shown), and the air pump is operated to activate the sealing section B.
The high-pressure air is supplied to the water pressure gauge protecting air packer 10 defining the above, and the water pressure gauge protecting air packer 10 is expanded to seal the gap with the boring hole H (step S4). Next, the injection pipe 30a is connected to a grout pump (not shown), and the grout pump is operated to inject the sealing material 8 of the filling target volume into the cloth packer 20 (step S5). Next, the injection pipe 30a is connected to the injection pressure container 31, the opening / closing valve 32 is opened, and the seal material 8 is gradually injected into the cloth packer 20 at a pressure higher than the spring water pressure by the pressure of high-pressure nitrogen (step S6). At this time, in order to prevent the cloth packer 20 from bursting, the pumping pressure is adjusted using a regulator so that the deepest part of the seal section B does not exceed 10 kgf / cm 2 in consideration of the water level in the hole and the like. Pressure container 31 for injection
When the sealing material 8 in the inside disappears, it is added, and this operation is repeated until the sealing material 8 hardens.
【００２１】注入作業中は、シール区間Ｂの上下に位置
する水圧計２の指示値を常時監視する。異常に指示値が
高くなるときは、何らかの理由で水圧計保護用エアパッ
カ１０が正常に作動していないか、岩盤の割れ目等を介
してシール区間Ｂが水圧測定対象区間Ａに連通している
ことが考えられる。このような状況のもとで過剰に注入
すると、水圧計２を埋め殺すことになりかねないので、
万一に備えシール材８の注入量は、先に算出した充填対
象容積とする。また、このような事態を回避する意味
で、事前の調査ボーリング資料等から、水圧測定対象区
間Ａ及び水圧計保護用エアパッカ１０を設置する位置を
慎重に決定する。During the injection work, the indicated values of the water pressure gauges 2 located above and below the seal section B are constantly monitored. If the indicated value becomes abnormally high, the water pressure gauge protection air packer 10 is not operating normally for some reason, or the seal section B is in communication with the water pressure measurement target section A via a crack in the bedrock or the like. Can be considered. Under these circumstances, if you inject too much, you may end up filling up the water pressure gauge 2.
As a precaution, the injection amount of the sealing material 8 is the filling target volume calculated previously. Further, in order to avoid such a situation, the positions where the water pressure measurement target section A and the water pressure gauge protecting air packer 10 are to be installed are carefully determined from preliminary drilling data and the like.
【００２２】次いで、シール材の養生を例えば５時間以
上行う（ステップＳ７）。そこで、水圧計保護用エアパ
ッカ１０の空気を抜き、水圧計保護用エアパッカ１０を
縮小したのち（ステップＳ８）、シール効果の確認試験
を行う（ステップＳ９）。そして、カウントを１つ進め
て（ステップＳ１０、Ｓ１１）ステップＳ２に戻り、次
のシール区間Ｂについて同様の手順を行う。カウントが
所定値Ｋに達したら（ステップＳ１１がＹＥＳ）、測定
パイプ１の設置を終る。Next, the sealing material is cured, for example, for 5 hours or more (step S7). Therefore, after the air of the water pressure gauge protecting air packer 10 is evacuated and the water pressure gauge protecting air packer 10 is reduced (step S8), a seal effect confirmation test is performed (step S9). Then, the count is advanced by 1 (steps S10 and S11), the process returns to step S2, and the same procedure is performed for the next seal section B. When the count reaches the predetermined value K (YES in step S11), the installation of the measuring pipe 1 is finished.
【００２３】[0023]
【発明の効果】以上説明したように本発明によれば、布
パッカの上下を水圧計保護用エアパッカでシールして布
パッカにシール材を注入し、布パッカのすなわち水圧測
定対象区間に対するシール効果を確実に向上し、湧水圧
の測定精度を向上することができる。As described above, according to the present invention, the upper and lower sides of the cloth packer are sealed by the water pressure gauge protecting air packer, the sealing material is injected into the cloth packer, and the sealing effect of the cloth packer, that is, the section for measuring the water pressure is obtained. Can be reliably improved, and the accuracy of spring pressure measurement can be improved.
【図１】本発明を実施する測定パイプの設置状態を示す
断面図。FIG. 1 is a cross-sectional view showing an installed state of a measuring pipe for carrying out the present invention.
【図２】図１の部分的な拡大図。FIG. 2 is a partially enlarged view of FIG.
【図３】図２のＡ−Ａ線矢視断面図。3 is a sectional view taken along the line AA of FIG.
【図４】水圧計回りを示す側断面図。FIG. 4 is a side sectional view showing the vicinity of a water pressure gauge.
【図５】布パッカと水圧計保護用エアパッカの連結部を
示す側断面図。FIG. 5 is a side sectional view showing a connecting portion between a cloth packer and a water pressure gauge protecting air packer.
【図６】図５のＢ−Ｂ線矢視断面図。6 is a sectional view taken along the line BB of FIG.
【図７】図５のＣ−Ｃ線矢視断面図。7 is a cross-sectional view taken along the line CC of FIG.
【図８】図５のＤ−Ｄ線矢視断面図。8 is a sectional view taken along the line DD of FIG.
【図９】測定パイプ設置時の機器の配置図。FIG. 9 is a layout diagram of devices when a measurement pipe is installed.
【図１０】測定パイプ設置の手順フロー図。FIG. 10 is a flow chart of a procedure for installing a measurement pipe.
Ａ・・・水圧測定対象区間 Ｂ・・・シール区間 Ｈ・・・ボーリング孔 １・・・測定パイプ １Ａ・・・水圧計部 １Ｂ・・・ねじ部 ２・・・水圧計 ３・・・小孔部 ４・・・フィルタ ５・・・空室 ６・・・導水孔 ７ａ・・・上部止水金具 ７ｂ・・・下部止水金具 ８・・・管内シール材（エポキシ樹脂材） ９・・・ケーブル １０・・・水圧計保護用エアパッカ １１・・・ゴムチューブ １２・・・金具 １３・・・環状溝 ２０・・・布パッカ ２１・・・取付部 ２２・・・固定金具 ２３・・・シール材 ３０・・・注入管等 ３０ａ・・・注入管 ３０ｂ・・・水抜き管 ３０ｃ・・・エアチューブ ３１・・・注入用加圧容器 ３２・・・開閉バルブ ３３・・・チューブ ３４・・・ボンベ A ... Water pressure measurement target section B ... Seal section H ... Boring hole 1 ... Measuring pipe 1A ... Water pressure gauge section 1B ... Screw section 2 ... Water pressure gauge 3 ... Small Hole 4 ... Filter 5 ... Vacancy 6 ... Water guide hole 7a ... Upper water stop fitting 7b ... Lower water stop fitting 8 ... Pipe sealing material (epoxy resin material) 9 ...・ Cable 10 ・ ・ ・ Air packer for water pressure gauge protection 11 ・ ・ ・ Rubber tube 12 ・ ・ ・ Metal fitting 13 ・ ・ ・ Circular groove 20 ・ ・ ・ Cloth packer 21 ・ ・ ・ Mounting part 22 ・ ・ ・ Fixing metal fitting 23 ・ ・ ・Sealing material 30 ... injection pipe 30a ... injection pipe 30b ... drainage pipe 30c ... air tube 31 ... injection pressurizing container 32 ... open / close valve 33 ... tube 34. ..Cylinders
フロントページの続き (72)発明者 中村 昭 茨城県つくば市大字旭１番地 建設省土木 研究所内 (72)発明者 山口 嘉一 茨城県つくば市大字旭１番地 建設省土木 研究所内 (72)発明者 吉松 弘行 茨城県つくば市大字旭１番地 建設省土木 研究所内 (72)発明者 檜垣 大助 茨城県つくば市大字旭１番地 建設省土木 研究所内 (72)発明者 梅田 宏 東京都中央区京橋１丁目７番１号 戸田建 設株式会社内 (72)発明者 後藤 年芳 大阪府大阪市北区堂島浜１丁目４番４号 大阪セメント株式会社内 (72)発明者 黒川 武 東京都中央区銀座８丁目14番14号 日特建 設株式会社内 (72)発明者 杉村 亮二 東京都中央区銀座８丁目14番14号 日特建 設株式会社内 (72)発明者 宇次原 雅之 東京都中央区銀座８丁目14番14号 日特建 設株式会社内Front page continued (72) Inventor Akira Nakamura 1 Asahi, Asahi, Tsukuba, Ibaraki Prefectural Civil Engineering Research Institute (72) Inventor Kaichi Yamaguchi 1st, Asahi, Tsukuba, Ibaraki Prefectural Civil Engineering Research Institute (72) Inventor Hiroyuki Yoshimatsu 1 Asahi, Oji, Tsukuba, Ibaraki, Civil Engineering Research Institute, Ministry of Construction (72) Inventor, Daisuke Higaki, 1 Asahi, Tsukuba, Ibaraki, Civil Engineering Research Institute, Ministry of Construction, Hiroshi Umeda, 1-7, Kyobashi, Chuo-ku, Tokyo No. 1 Toda Construction Co., Ltd. (72) Inventor Toshiyoshi Goto 1-4-4 Dojimahama, Kita-ku, Osaka-shi, Osaka Prefecture Osaka Cement Co., Ltd. (72) Inventor Takeshi Kurokawa 8-14, Ginza, Chuo-ku, Tokyo No. 14 within Nittoku Construction Co., Ltd. (72) Inventor Ryoji Sugimura 8-8, Ginza, Chuo-ku, Tokyo No. 14-14 Inside Nittoku Construction Co., Ltd. (72) Inventor Masayuki Ujihara 8 Ginza, Chuo-ku, Tokyo 14-14 No. 14 Nissho Construction Co., Ltd.
Claims (1)
下方にそれぞれ水圧計保護用エアパッカを設け、これら
の水圧計保護用エアパッカに連続して布パッカを設けた
測定パイプをボーリング孔に挿入し、一つの布パッカ上
下方の水圧計保護用エアパッカを膨出して一時的に孔内
湧水を止めたのちに該布パッカに湧水圧以上の圧力でシ
ール材を注入し、注入したシール材を養生したのち膨出
した水圧計保護用エアパッカを縮小して養生したシール
材のシール効果を確認し、以下同様の手順で残りの布パ
ッカにシール材を注入しシール効果を確認して測定パイ
プを設置することを特徴とする地盤内湧水圧測定パイプ
の設置方法。1. A measuring pipe having a water pressure gauge protecting air packer provided above and below a water pressure gauge disposed at a plurality of locations of a pipe, and a measuring pipe provided with a cloth packer continuously to the water pressure gauge protecting air packer in a boring hole. Insert one, and bulge the water pressure gauge protection air packer above and below one cloth packer to temporarily stop the spring water in the hole, then inject the sealing material into the cloth packer at a pressure higher than the spring water pressure and inject the seal. After the material has been cured, the bulging water pressure gauge protection air packer is reduced to check the sealing effect of the cured sealing material, and then the sealing material is injected into the remaining cloth packers by the same procedure below, and the sealing effect is confirmed and measured. A method for installing a pipe for measuring inland spring pressure, characterized by installing a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5265967A JP2584585B2 (en) | 1993-10-25 | 1993-10-25 | Installation method of spring pressure measurement pipe in the ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5265967A JP2584585B2 (en) | 1993-10-25 | 1993-10-25 | Installation method of spring pressure measurement pipe in the ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07158400A true JPH07158400A (en) | 1995-06-20 |
| JP2584585B2 JP2584585B2 (en) | 1997-02-26 |
Family
ID=17424539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5265967A Expired - Fee Related JP2584585B2 (en) | 1993-10-25 | 1993-10-25 | Installation method of spring pressure measurement pipe in the ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2584585B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001280052A (en) * | 2000-03-31 | 2001-10-10 | Taisei Corp | Water stop packer and water stopping method for well |
| CZ306351B6 (en) * | 2015-06-23 | 2016-12-14 | Watrad, Spol. S R.O. | Hydraulic packer |
| CN113565515A (en) * | 2021-07-24 | 2021-10-29 | 郑州大学 | Device and method for testing pore water pressure in site during subway communication channel freezing method construction |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271122B (en) * | 2020-03-25 | 2021-03-26 | 上海同岩土木工程科技股份有限公司 | Method for monitoring external water pressure of lining |
-
1993
- 1993-10-25 JP JP5265967A patent/JP2584585B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001280052A (en) * | 2000-03-31 | 2001-10-10 | Taisei Corp | Water stop packer and water stopping method for well |
| CZ306351B6 (en) * | 2015-06-23 | 2016-12-14 | Watrad, Spol. S R.O. | Hydraulic packer |
| CN113565515A (en) * | 2021-07-24 | 2021-10-29 | 郑州大学 | Device and method for testing pore water pressure in site during subway communication channel freezing method construction |
| CN113565515B (en) * | 2021-07-24 | 2024-03-15 | 郑州大学 | Device and method for testing pore water pressure in freezing method construction of subway communication channel on site |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2584585B2 (en) | 1997-02-26 |
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