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A platform for research: civil engineering, architecture and urbanism
METHOD FOR CONSTRUCTING IMPERVIOUS WALL
PROBLEM TO BE SOLVED: To construct an impervious wall with reliable water barrier effect without an unimproved part or an adhesion failure part left when an impervious wall is constructed in the ground by using a high pressure jetting agitation construction method.SOLUTION: An impervious wall 10 is constructed in the ground by conducting a first step of drilling and forming a soil improvement body 20, and subsequently conducting a second step of forming the soil improvement body 20 only, repeatedly. In the second step, before the soil improvement body 20 formed in the first step is consolidated, a rod 30 is not pulled out from the ground but the rod 30 is moved to the position where a next soil improvement body 20 is constructed. The soil improvement body 20 is formed by rotating or swinging the rod 30 around an axis by a prescribed angle as a jetted material is jetted from an injection port 31 installed at the tip of the rod 30 while moving the rod 30 in the vertical direction.SELECTED DRAWING: Figure 1
【課題】 高圧噴射撹拌工法を用いて地中に遮水壁を構築する際に、未改良部分や付着不良部分が残ることなく、確実な遮水効果を有する遮水壁を構築する。【解決手段】 削孔と地盤改良体２０の形成を行う第１の工程を実施し、次いで地盤改良体２０の形成のみを行う第２の工程を繰り返して行うことにより、地中に遮水壁１０を構築する。第２の工程では、第１の工程で形成した地盤改良体２０が固結する前に、ロッド３０を地中から引き抜かずに、次の地盤改良体２０を構築する位置までロッド３０を移動させる。地盤改良体２０は、ロッド３０の先端部に設けた噴射口３１から噴射物を噴射しながら当該ロッド３０を軸周りに所定角度だけ回転又は揺動させるとともに、当該ロッド３０を上下方向に移動させることにより形成する。【選択図】 図１
METHOD FOR CONSTRUCTING IMPERVIOUS WALL
PROBLEM TO BE SOLVED: To construct an impervious wall with reliable water barrier effect without an unimproved part or an adhesion failure part left when an impervious wall is constructed in the ground by using a high pressure jetting agitation construction method.SOLUTION: An impervious wall 10 is constructed in the ground by conducting a first step of drilling and forming a soil improvement body 20, and subsequently conducting a second step of forming the soil improvement body 20 only, repeatedly. In the second step, before the soil improvement body 20 formed in the first step is consolidated, a rod 30 is not pulled out from the ground but the rod 30 is moved to the position where a next soil improvement body 20 is constructed. The soil improvement body 20 is formed by rotating or swinging the rod 30 around an axis by a prescribed angle as a jetted material is jetted from an injection port 31 installed at the tip of the rod 30 while moving the rod 30 in the vertical direction.SELECTED DRAWING: Figure 1
【課題】 高圧噴射撹拌工法を用いて地中に遮水壁を構築する際に、未改良部分や付着不良部分が残ることなく、確実な遮水効果を有する遮水壁を構築する。【解決手段】 削孔と地盤改良体２０の形成を行う第１の工程を実施し、次いで地盤改良体２０の形成のみを行う第２の工程を繰り返して行うことにより、地中に遮水壁１０を構築する。第２の工程では、第１の工程で形成した地盤改良体２０が固結する前に、ロッド３０を地中から引き抜かずに、次の地盤改良体２０を構築する位置までロッド３０を移動させる。地盤改良体２０は、ロッド３０の先端部に設けた噴射口３１から噴射物を噴射しながら当該ロッド３０を軸周りに所定角度だけ回転又は揺動させるとともに、当該ロッド３０を上下方向に移動させることにより形成する。【選択図】 図１
METHOD FOR CONSTRUCTING IMPERVIOUS WALL
遮水壁の構築方法
OKAWA NAOYA (author) / TEZUKA HIROAKI (author) / KAWANISHI ATSUSHI (author)
2016-11-10
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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