Abstract
By the development of sewerage, the pipe extension has become 420,000 km and the sewage facility stock is increasing more. If it has passed years considerably since it constructed, the possibility of the road caving becomes higher. Incidents in FY 2009 was about 3,800 points. In particular, in recent years, the deterioration of the sewage pipe becomes significant. The immediate measures are urgent. The pipe rehabilitation by the non-open method is attracted by considering the impact of drilling and road traffic. But the pipe rehabilitation has been designed with a lot of methods, on the tube diameter of less than φ800mm, the self-reliance pipe method is mainly employed. Because the strength withstand the external pressure is needed for self-reliance pipe method, the thick becomes very large, and it is difficult to ensure workability and sections. In this study, considering the self-reliance pipe, it is verified by performing experiments and analysis.
