PIPE LINING CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To enable even a large bore duct to be lined as specified in a short time. SOLUTION: An airtight space S is formed in a tubular lining material 1 constituting of tubular unwoven fabric which is covered with film having highly airtight inner/outer faces and impregnated with a thermosetting resin by blocking both end open parts of the tubular lining material 1. An air hose 14 is connected to the airtight space S and at the same time, a hot water hose 16 is led into the airtight space S. Further, the tubular lining material 1 is led into sewage piping 10 together with the air hose 14 and the hot water hose 16, sharing the sewage piping 10 (duct). After that, the sharing of the sewage piping 10 is suspended and the stream of sewage (fluid) is stopped in the upstream of the sewage piping 10. Under this state, a compressed air is supplied into the airtight space S of the tubular lining material 1 from the air hose 14 to press the tubular lining material 1 against the inner wall of the sewage piping 10. IN addition, a hot water is showered from the hot water hose 16 led into the airtight space S to heat the tubular lining material 1 with the hot water. Thus the thermosetting resin with which the tubular lining material 1 is impregnated is cured.