TRACTION TYPE WATER BOTTOM SEDIMENT REMOVING DEVICE AND WATER BOTTOM SEDIMENT REMOVING CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To remove deposit sediment of the water bottom over a wide range, by stably and smoothly moving a sediment transfer pipe in parallel in a traction type.;SOLUTION: This water bottom sediment removing device is constituted so that a duplex tube 10 is formed by juxtaposing the sediment transfer pipe 12 provided with a plurality of sediment inflow ports 11 and a water supply pipe 14 provided with a plurality of water jetting ports 13, and is immersed in the deposit sediment of the water bottom, and a water flow is caused in the tube by a suction pump 19 mounted on the sediment transfer pipe 12, and a water jet is jetted from the water jetting ports 13, and the sediment is made to flow in the sediment transfer pipe 12 from the sediment inflow ports 11, and is transferred by being carried on the water flow. A weight balance is improved by arranging the suction pump 19 in the center of the sediment transfer pipe 12, and the water supply pipe 14 is arranged on the upper side of the sediment transfer pipe 12. The water jetting ports 13 are opened on the tip of a branch pipe 22 extended downward by penetrating into the sediment transfer pipe 12 from the water supply pipe, and sediment resistance applied to the duplex tube 10 in traction is reduced.;COPYRIGHT: (C)2008,JPO&INPIT