| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To maintain water cut-off properties by a part of a short pipe of a cut-off member brought into contact with a rehabilitated pipe, even if the rehabilitation pipe is axially displaced by ground deformation. <P>SOLUTION: This sewer conduit 10 includes a sewer pipe 14 which is connected to a manhole 12; and the sewer pipe 14 comprises: an existing pip 16; and the rehabilitation pipe 18 which is independently provided inside the existing pipe 16. The cut-off member 20 composed of a synthetic rubber comprises: a short pipe 20a which is brought into close contact with an inner surface of the existing pipe 16; and a flange 20b which is formed in such a shape as to be expanded from one end thereof. A protective member 22 composed of SUS includes: a short pipe 22a with an outer surface along an inner surface of the short pipe 20a of the cut-off member 20; and a flange 22b which is expanded from one end thereof. On the inside with respect to outer peripheral edges of the flanges 20b and 22b, the two flanges 20b and 22b are fixed to an inner wall 12a of the manhole by an anchor 24. Since the short pipe 20a of the cut-off member is longer than the short pipe 22a of the protective member, the short pipe 20a is exposed from the protective member 22 at the other end, and brought into direct contact with an outer periphery of the rehabilitation pipe 18; and an outer surface of the rehabilitation pipe is brought into a cut-off state in that position by the short pipe 20a of the cut-off member 20. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
