| 摘要 |
A tubular lining material for reinforcing pipe lines, which has a double-layered structure comprising an air-impervious outer tubular textile jacket provided on the inside thereof with a reinforcing inner tubular textile jacket, characterized in that the reinforcing tubular textile jacket is more coarse in weaving density and larger in diameter than the air-impervious tubular textile jacket and that the product of the length of the diameter and the elongation ratio in the direction of the diameter on fracture, of the air-impervious tubular textile jacket is approximately equal to the product of the length of the diameter and the elongation ratio in the direction of the diameter on fracture of the reinforcing tubular textile jacket. The tubular lining material is excellent in both pressure-resistance and earthquake-resistance so that even if the pipe lines are cracked or broken off by strong external force caused, for example, by earthquake, the tubular lining material is merely detached from the damaged pipe lines, without being destroyed, to maintain its function of providing a passageway for a fluid transported under high pressure. |
