Title:
METHOD OF SAND AND SLUDGE DISCHARGE SYSTEM FOR RESERVOIR AND BASIN, AND SAND AND SLUDGE DISCHARGE SYSTEM EQUIPMENT FOR RESERVOIR AND BASIN
Document Type and Number:
Japanese Patent JP3918043
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the sand discharge performance and to discharge a sand containing water flow in a short time with spiral flow by using both a group of multistage permeable sediment control dams for adjusting and fine-graining the inflow sediment at the upstream side of a reservoir or the like and a linear sediment type of eddy sediment discharge pipes installed in a longitudinal direction through the bottom of the reservoir.
SOLUTION: A multistage slit sediment control dam is provided in a longitudinal direction of a river, and slit width bs is sequentially decreased to place it near the closing condition respectively. In the installation of a permeable multistage slit erosion control dam for the purpose of the prevention, adjustment, sorting and fining for sediment incoming to a reservoir or basin, a slit width for the sediment control dam 1(2) at the downstream side is gradually decreased such as bs1>bs2 compared to the sediment control dam 1(1) at the upstream side, and finally the particle size d3 flowing into the reservoir and water intake dam is made less than the slit width bv of an eddy sand discharge pipe 3 provided at the upstream side of the basin bottom dam portion 2, that is, bv>d3 (or it is so controlled as to maintain d3<bv<bs2<d2<bs1<d1).
Inventors:
Kira Hachiro
Sato
Sato
Application Number:
JP10805497A
Publication Date:
May 23, 2007
Filing Date:
March 21, 1997
Export Citation:
Assignee:
Sato
Kira Akira
Kira Akira
International Classes:
E02B7/20; E02B8/02; (IPC1-7): E02B7/20; E02B8/02
Domestic Patent References:
JP8013453A | ||||
JP7158038A |
Attorney, Agent or Firm:
Kenichiro Matsuo