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METHOD FOR INJECTING CHEMICAL FLUID IN ARTESIAN GROUNDWATER
PROBLEM TO BE SOLVED: To provide a method for injecting chemical fluid in artesian groundwater which can completely prevent artesian groundwater and the like from jetting out.SOLUTION: A method for injecting chemical fluid in artesian groundwater includes: installing a water cutoff device equipped with sludge port opening/closing means 12a at a starting position of casing drilling, in prior to casing drilling; performing precedent drilling with a casing 15 which is equipped with a precedent drilling bit 13 and a water cutoff casing 15X including a valve mechanism that opens when feeding a drilling fluid B and closes when stopping the feeding of the fluid, the casing 15 being formed by connecting unit casings 15A in an axis direction; temporarily pulling out the casing 15, exchanging the precedent drilling bit 13 with a main drilling bit equipped with a valve mechanism that opens when feeding the drilling fluid B and closes when stopping the feeding of the fluid, and performing main drilling; and inserting an injection pipe inside the casing 15, and thereafter, pulling out the casing 15 and injecting chemical fluid by using the injection pipe.SELECTED DRAWING: Figure 4
【課題】被圧地下水等の噴出を完全に防止することができる被圧水下における薬液注入工法とする。【解決手段】排泥口の開閉手段12aが備わる止水装置を、ケーシング削孔に先立ってケーシング削孔の開始位置に設置する。削孔液Bを送液すると開口し、この送液を停止すると閉口する弁機構が備わる止水ケーシング15X及び先行削孔用ビット13をケーシング15に取り付けて先行削孔する。ケーシング15は、単位ケーシング15Aが軸方向に接続されて形成される。いったんケーシング15を引き抜き、先行削孔用ビット13を、削孔液Bを送液すると開口し、この送液を停止すると閉口する弁機構が備わる本削孔用ビットに交換して本削孔する。注入管をケーシング15内に挿入した後、ケーシング15を引き抜き、注入管を使用して薬液を注入する。【選択図】図4
METHOD FOR INJECTING CHEMICAL FLUID IN ARTESIAN GROUNDWATER
PROBLEM TO BE SOLVED: To provide a method for injecting chemical fluid in artesian groundwater which can completely prevent artesian groundwater and the like from jetting out.SOLUTION: A method for injecting chemical fluid in artesian groundwater includes: installing a water cutoff device equipped with sludge port opening/closing means 12a at a starting position of casing drilling, in prior to casing drilling; performing precedent drilling with a casing 15 which is equipped with a precedent drilling bit 13 and a water cutoff casing 15X including a valve mechanism that opens when feeding a drilling fluid B and closes when stopping the feeding of the fluid, the casing 15 being formed by connecting unit casings 15A in an axis direction; temporarily pulling out the casing 15, exchanging the precedent drilling bit 13 with a main drilling bit equipped with a valve mechanism that opens when feeding the drilling fluid B and closes when stopping the feeding of the fluid, and performing main drilling; and inserting an injection pipe inside the casing 15, and thereafter, pulling out the casing 15 and injecting chemical fluid by using the injection pipe.SELECTED DRAWING: Figure 4
【課題】被圧地下水等の噴出を完全に防止することができる被圧水下における薬液注入工法とする。【解決手段】排泥口の開閉手段12aが備わる止水装置を、ケーシング削孔に先立ってケーシング削孔の開始位置に設置する。削孔液Bを送液すると開口し、この送液を停止すると閉口する弁機構が備わる止水ケーシング15X及び先行削孔用ビット13をケーシング15に取り付けて先行削孔する。ケーシング15は、単位ケーシング15Aが軸方向に接続されて形成される。いったんケーシング15を引き抜き、先行削孔用ビット13を、削孔液Bを送液すると開口し、この送液を停止すると閉口する弁機構が備わる本削孔用ビットに交換して本削孔する。注入管をケーシング15内に挿入した後、ケーシング15を引き抜き、注入管を使用して薬液を注入する。【選択図】図4
METHOD FOR INJECTING CHEMICAL FLUID IN ARTESIAN GROUNDWATER
被圧水下における薬液注入工法
DEGUCHI AKIRA (Autor:in) / SAITO RIKIYA (Autor:in) / KANO SHUNSAKU (Autor:in) / INAISHI NORIASA (Autor:in) / KATAUE TAKAFUMI (Autor:in) / SEKIGUCHI SETSUYA (Autor:in) / WATANABE NORIO (Autor:in) / WATANABE TAKASHI (Autor:in) / MIZOTA RYUHEI (Autor:in) / KUMADA TOMONORI (Autor:in)
09.03.2017
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
The Deep Excavation of Ground Containing Artesian Groundwater
British Library Conference Proceedings | 1994
|Protection of new Southampton drydocks against artesian groundwater during and after construction
Engineering Index Backfile | 1933
|