| 摘要 |
PROBLEM TO BE SOLVED: To provide a water take-in apparatus for safely and efficiently collecting a boring machine that has reached underwater in a water bottom jacking method.SOLUTION: A closed space formed by partitioning the interior of a separation cylinder axially separated in a front cylinder and a rear cylinder, by a front bulkhead and a rear bulkhead with a predetermined space in an axial direction, is formed between the rear inside of a cylindrical frame forming an outer shell of the boring machine, or the rear end side of the boring machine, and the front end side of a buried pipe row. The frame or the separation cylinder between the front bulkhead and rear bulkhead is circumferentially cut or separated. The water take-in apparatus is used when collecting the boring machine located in front of the cut or separated part, from the water in a state of partitioning with the front bulkhead. The water take-in apparatus includes a partition valve installed on the front end side of the buried pipe row; a take-in pipe extended from one end of the partition valve to penetrate the rear bulkhead and provided penetrating the frame or the separation cylinder; and a discharge pipe extended from the other end of the partition valve and provided penetrating the rear bulkhead. |
