| 摘要 |
<p>PURPOSE:To surely prevent gas leakage by furnishing an end blocking part on the removing side of an unused pipe with an opening in the work method for preventing leakage of gas piping burried under roads, deciding the quantity of resin for filling the pipe based on the pipe diameter and length from the opening to a branch point of a conduit, and filling the unused supply pipe with the resin by means of fluid pressure. CONSTITUTION:An end blocking part portion of an unused supply pipe 2 at a removing position (d) on a house (b) side is dug out and furnished with an opening part 2a. A resin injector 4 is connected to the opening portion 2a through a transparent hose 3 which allows to see inside. Then, the quantity of resin to be injected is decided based on the inner diameter and length of the unused supply pipe 2 from the open portion 2a to a conduit 1, and the resin injector 4 is filled with normal-temperature-hardening type high-viscosity resin 6. The high-viscosity resin 6 is supplied by means of a compressed air pressure into the unused supply pipe 2, then is allowed to harden.</p> |
