WATER BOTTOM DREDGING METHOD AND ITS DEVICE IN SOLID FOREIGN MATTER REMAINING WATER ZONE

摘要

PROBLEM TO BE SOLVED: To provide a water bottom dredging method and its device in a solid foreign matter remaining water zone for dredging a water bottom on which a dangerous object remains efficiently and safely without exposing a worker to danger. SOLUTION: A sediment suction pipe 10 having a suction port at a lower end and an ejector pump for sucking sediment through the suction port by utilizing negative pressure generated by making high pressure water flow into the pipe are used to hang down the absorption pipe 10 vertically on the water bottom from a work barge and suck sediment on the water bottom by the ejector pump. COPYRIGHT: (C)2005,JPO&NCIPI