| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem in which sediment cannot be sucked when soil is thick by a conventional dredging device by a buried type perforated pipe, regarding a fixed type dredging device by a buried type perforated pipe. <P>SOLUTION: The fixed type dredging device by a perforated pipe 1b having a perforated part 1c formed by providing holes at a part of the pipe at appropriate intervals along the longitudinal direction of the pipe is a fixed type dredging device 1 by the buried type perforated pipe comprising: a water absorption part 14d disposed on the upstream side of the perforated part 1c for absorbing water underwater 3; the perforated part 1c of the perforated pipe buried vertically in deposited sediment 2 under a water surface; and a transport part 1e disposed on the downstream side of the perforated part 1c, folded from a rear end of the perforated part and arranged on the deposited sediment, for discharging the sediment to the outside of a dredging area. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
