WATER GUIDE PART FORMING MEMBER FOR DRAIN PIPE AND INSTALLATION METHOD OF DRAIN PIPE

• Main Authors: NAKAMORI JUNICHIRO, TAKAHASHI NAOKI, YAMAJI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 01.09.2023
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

To provide a water guide part forming member for a drain pipe regarding the drain pipe buried in the ground having a slope face or an inclined face, easily inserted into a cylindrical part and causing no space between an inner peripheral surface of the cylindrical part and the outer peripheral surface of a filter member, and a construction method of the drain pipe.SOLUTION: A water guide part forming member 30 has an expandable member 31 expandable in the radial direction and a filter member 32 covering an outer peripheral surface of the expandable member 31. The water guide part forming member 30 is inserted into a cylindrical part 2 in a state of having an outer diameter smaller than an inner diameter of the cylindrical part 2. Then, by expanding the expandable member 31, a space between the outer peripheral face of the filter member 32 and the inner peripheral face of the cylindrical part 2 is closed.SELECTED DRAWING: Figure 2 【課題】法面又は斜面を有する地盤内に埋設される排水パイプに関して、筒部内に挿入容易であり、かつ筒部の内周面とフィルター部材の外周面との間に隙間が生じない、排水パイプ用の導水部形成部材及び排水パイプの施工方法を提供する。【解決手段】導水部形成部材３０は、径方向に膨張可能な膨張可能部材３１と、膨張可能部材３１の外周面を覆うフィルター部材３２とを備える。導水部形成部材３０は、筒部２の内径よりも小さな外径を有する状態で、筒部２内に挿入される。その後、膨張可能部材３１を膨張させることにより、フィルター部材３２の外周面と筒部２の内周面との間の隙間が塞がれる。【選択図】図２