DEVICE AND METHOD FOR ELIMINATING WATER BOTTOM SEDIMENT

Japanese Patent JP3723852

B2

PROBLEM TO BE SOLVED: To provide a device and a method for eliminating water bottom sediment capable of preventing the water bottom sediment from being stirred and water near the sediment from being contaminated when a sediment transfer tube is installed and preventing sediment inflow holes from being clogged.
SOLUTION: The sediment transfer tube 8 in which the plurality of sediment inflow holes 4 are formed parallel with each other in the longitudinal direction is buried in the water bottom sediment 2, water flow for transfer is produced by forcibly moving water 5 for transfer to the downstream side of the sediment transfer tube 3, and a fluid jetting tube 11 in which a plurality of fluid jetting holes 4 are formed parallel with each other in the longitudinal direction of the tube wall is fitted to the lower part of the sediment transfer tube 3. Water 2 for jetting is supplied to the fluid jetting tube 11 and jetted from the fluid jetting holes 4 to the periphery of the sediment transfer tube 3 to fluidize sea bottom sediment 2 near an installation place for the sediment transfer tube 3 so as to promote the inflow of the sediment from the sediment inflow holes 4 to the inside of the sediment transfer tube. By discharging the sediment flowing into the sediment transfer tube 3 from a sediment discharge end 18, the sea bottom, the sea bottom sediment 2 can be eliminated.

Hitoshi Noguchi

JP2003093430A

December 07, 2005

March 31, 2003

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Incorporated Administrative Agency Port Airport Research Institute

E02F7/00; E02B7/20; E02B8/00; E02F7/10; (IPC1-7): E02B8/00; E02B7/20; E02F7/00; E02F7/10

JP2002235337A

Yoichi Okawa

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