STRUCTURE OF PIPE FOR PROPULSIVE EXCAVATION WORK

摘要

PURPOSE:To secure strength for propulsive excavation work in laying pipes as well as raise corrosion resistance against fluid in the pipe by a method in which the inner layer of a corrosion-resistant resin is joined with the outer layer of a high-strength by an intermediate layer. CONSTITUTION:Inner layers 2 of a corrosion-resistant resin are joined with outer layers 3 of a high-strength material by intermediate layers 4 to make up pipes 1A and 1B for propulsive excavation. The ends of both the pipes 1A and 1B are faced each other, and an insert port 6 and a receiving port 7 formed on the ends of the pipes 2 projected from the end portion are connected through a sealant 12. A high-strength short pipe 8 is interposed between the ends of the layers 3 facing each other.