WATER STOPPING METHOD OF SYNTHETIC RESIN CORRUGATED TWO-LAYER PIPE

摘要

PROBLEM TO BE SOLVED: To improve water stopping performance and escape prevention by abutting flanges on ends of synthetic resin corrugated two-layer pipes each having flat inner surface, winding water absorption expansion unwoven fabric around an outer periphery of the connection part, and covering it with a victaulic joint cover. SOLUTION: A synthetic resin flange 3 is formed on an end of a synthetic resin corrugated two-layer pipe having a flat inner surface. The flanges 3 are abutted against each other. A water absorption expansion unwoven fabric 4 is wound around an outer periphery of the abutted and connected portion. A victaulic joint cover 5 covers it. They are fastened by a bolt 6 for connection. As the synthetic resin, high density polyethyrene is preferable in view of moldability and mechanical property. It is thus possible to obtain high water stopping performance with an inner space of the pipe being filled with water, Tensile strength in an axial direction of the pipe and escape prevention are improved. Connection is easily performed.