| 摘要 |
<p>PURPOSE:To prevent generation of deflection between a lining material and a conduit by forming a circular protrusion protruded inward at a certain depth of the terminal of the conduit, then providing the lining material on the inner surface of the conduit, fitting a development ring to a position on the pipe end side close to the circular protrusion, and developing it. CONSTITUTION:A circular protrusion 3 protruded inward is formed in an inner surface of a position at a certain depth of a terminal part of a conduit 1 such as a gas guide pipe or the like embedded under the ground, and a lining material 2 is lined on the inner surface of the conduit 1. The position of the circular protrusion 3 in this lining material 2 is formed to be a swollen part 4 swollen inward. A development ring 5 of a rigid ring of metal or the like is then installed on the inner side of the lining material 2 on the pipe end side close to this swollen part, and this is developed from the inner side to be plastically deformed, so the lining material 2 is held between the conduit 1 and the swollen part 4. Generation of deflection at the terminal of the lining material can thus be prevented in the case where the lining material 2 is not strongly bound to the conduit 1 for the whole length of the conduit 1.</p> |
