| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a conduit lining method capable of smoothly laying an underground conduit buried underground in total length or in a long range at one time. SOLUTION: This lining material constitutes a cut-off part 13 at height of about 3/4 of height of a sewer 9 by sandbag 11 on an upstream end part of the downstream sewer 9. Sewage 15 at depth of about 1/3 of height of a sewer 5 stagnates, and a flow of sewage 21 from the upstream is blocked by closing a downstream end part of an upstream sewer 17 by an air plug 19. Thereafter, a cylindrical lining material 27 is drawn in by using a rope for drawing toward a downstream side manhole 3 from an upstream side manhole 1, and thereafter, a lining layer is constituted by pressing the lining material 27 on an inner surface 7 of the sewer 5.</p> |
