| 摘要 |
PROBLEM TO BE SOLVED: To prevent the damage of a concrete pipe body in the case where a connection part is inclined by steep curve pipe jacking or the like by reinforcing by attaching a steel plate to the inserting part and the faucet part of the end of a concrete-made jacking pipe. SOLUTION: A jacking pipe 1 makes one end of a concrete-made pipe body 2 an inserting part, and the other end is made a faucet part. The inserting part forms the end of the pipe body 2 into a small diameter to firmly attach a steel plate 5 through an anchor 8, and a ring-like seal rubber 6 is attached to a groove 5a formed on the whole periphery. The faucet part is projected from the end on the outer periphery of the pipe body 2 to attach a cover 3, and a ring-like steel plate 7 is firmly attached through the anchor 8 on the end face of the pipe body 2 to adhere and fix a cushion rubber 9 on two parts. Thereby in the case where the connection part of the jacking pipes 1, 1 is inclined in steep curve pipe jacking or the like, the cushion rubber 9 is deformed to prevent the contact of the steel plates 5, 7, and even when the steel plates 5, 7 are brought into contact with each other, force is dispersed to prevent the damage of the pipe body 2.
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