宽顶堰流量计算

序号项目单位数量备注12水库水位（堰顶高程147.60m）m148.6149.6150.6151.6152.6153.6154.21154.6155.6156.6157.42157.63堰上水头Hm1.02.03.04.05.06.06.67.08.09.09.810.04单孔净宽bm11.611.611.611.611.611.611.611.611.611.611.611.65闸墩厚dm1.81.81.81.81.81.81.81.81.81.81.81.86边墩边缘至建筑物上游边线间距离△bm0000000000007孔数n7777777777778坎高Pm1.31.31.31.31.31.31.31.31.31.31.31.39底坎进口型式修圆形修圆形修圆形修圆形修圆形修圆形修圆形修圆形修圆形修圆形修圆形修圆形10P/H1.30000.65000.43330.32500.26000.21670.19670.18570.16250.14440.13240.130011自由溢流流量系数m0.36540.37080.37390.37590.37720.37830.37880.37900.37970.38020.38050.380612b/(b+d)0.86570.86570.86570.86570.86570.86570.86570.86570.86570.86570.86570.865713中孔侧收缩系数σcm0.98870.98630.98490.98390.98320.98270.98240.98220.98180.98150.98130.981214b/(b+△b)11111111111115边孔侧收缩系数σcs11111111111116侧收缩系数σc0.9900.98830.98710.98620.98560.98510.98490.98470.98440.98420.98400.983917流量Q（未计行近流速水头）m3/s130.148372.80689.701066.581495.121969.732280.062486.303041.663633.264143.934259.0018进水渠宽度Bm92.00092.0092.0092.0092.0092.0092.0092.0092.0092.0092.0092.0019行近流速v0m/s1.4152.032.502.903.253.573.753.864.134.394.594.6320含行近流速水头的堰前水头H0m1.1022.213.324.435.546.657.337.768.879.9810.8911.0921流量Q（已计行近流速水头）m3/s150.560432.80802.321242.321743.022297.802660.662901.843551.384243.444840.904975.54计算公式Q=σc*m*n*b*（2g）1/2H03/2宽顶堰流量计算表