| 摘要 |
<p>PURPOSE:To enable a leakage part to be repaired of an underground-embedded vertical pipe without extracting it by injecting an osmotic concretion seal agent into the ground from the inside of the pipe and applying a lining by a quick- setting injection agent to an internal surface of the pipe after the seal agent is hardened. CONSTITUTION:A seal agent, having osmotic concretion action, is injected from the inside of a pipe 3 into the ground G through a leakage part L. The seal agent 6, injected into the ground G from the leakage part L, infiltrates concreting in a fine clearance of the ground G. Thereafter, the seal agent 6, adhering to the periphery of the leakage part L in an internal surface of the pipe 3, is removed, and a quick-setting injection agent 8 is applied to an internal wall surface of the pipe 3.</p> |
