| 摘要 |
PROBLEM TO BE SOLVED: To efficiently discharge silted deposit by the release of a floor discharge gate while adjusting pressure distribution by a water current. SOLUTION: This method of discharging sediment deposited at the bottom of a reservoir 2 dammed up by a dam 12 is carried out by repeating the operation of opening the flood discharge gate 14 corresponding to the deepest position of water depth first in the dam 12 provided with a plurality of flood discharge gates 14 in a lateral row, to discharge the silted deposit in the position and its periphery downstream along with a water current while scouring and crumbling the silted deposit in sequence, then closing the flood discharge gate 14 and opening the floor discharge gate 14 located next. The water current is thereby converged on one place, and the sediment deposited around the position of each gate is discharged downstream along with the water current while being scoured and crumbled. COPYRIGHT: (C)2009,JPO&INPIT
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