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1、.(5)(6)Scps 1 2 0.00290.00150.0016()95%3 3.1 ()12199212345678910 . 1 (1992.9.9)Measured sedimentation profile variation with emptying flush in Dayudu settling basin2 (1992.9.9)Hydrographs of flow and sediment concentration during the period of emptying flush in Dayudu settling basin()200500kg/m3700
2、1000kg/m325%50%11 Sediment discharge effect of emptying flush in the settling basinsVZ(m3)VC(m3)VC/VZ(%)12345678910 . (1)11050687862.21992.9.9(2)10046665966.31992.9.26200010012345678910 . 51982.6.4(1)252073929.31983.10(2)244776031.11985.6912345678910 . (3)217568031.31986.69(4)239575531.51988.793.
3、2 3.2.1 12345678910 . (1) e(m)b(m)nn=1H0(m)sQcpj=Qi+Qi+1/2(2)Qcpjj(m3/s)Qi(1)j(m3/s)Qi+1(1)j(m3/s)(3)Qcp(m3/s)tjj(h)n3.2.2 (1) (4) Scp(kg/m3)Sjj(kg/m3)34200500kg/m322 Mean sediment concentration discharged by emptying flush in the settling basins12345678910 . (kg/m3)(kg/m3)(1)5009001992.9.9(2)4601
4、2345678910 . 8001992.9.262004001982.6.4(1)2806701983.10(2)28060012345678910 . 1985.69(3)2507001986.69(4)2848731988.79(2) VwVc(Vw+Vc)Scp=Vcs1000Vc=VwS12345678910 . cp/1000s-Scp(5)Vc(m3)s(t/m3)Scp(kg/m3)tctc=Vw+Vc/3600Qcp(6)Qcp(3)3.3 3.3.1 33 Water-sand condition for emptying flush in the settling basinsVw(m3)VZ(m3)Qcp(m3/s)Scp(kg/m3)12345678910 . (1)5570110501.15001992.9.9(2)6560100461.84601992.9.26111213141516171819 124413124857