宽顶堰流量计算

序号项目单位数量计算公式Q=σc*m*n*b*（2g）1/2H03/212水库水位（堰顶高程147.60m）m148.6m3堰上水头H1.0m4单孔净宽b11.6m5闸墩厚d1.8边墩边缘至建筑物上游边线间m60距离△b7孔数n7m8坎高P1.39底坎进口型式修圆形10P/H1.300011自由溢流流量系数m0.3612b/(b+d)0.865713中孔侧收缩系数σcm0.988714b/(b+△b)115边孔侧收缩系数σcs116侧收缩系数σc0.99017流量Q（未计行近流速水头）m3/s130.148m92.00018进水渠宽度Bm/s1.41519行近流速v020含行近流速水头的堰前水头H0m1.10221流量Q（已计行近流速水头）m3/s150.560备注149.62.011.61.8071.3修圆形0.65000.37080.86570.9863110.9883372.8092.002.032.21432.80150.63.011.61.8071.3修圆形0.43330.37390.86570.9849110.98716.7092.002.503.32802.32151..011.61.8071.3修圆形0.32500.37590.86570.9839110.98621066.52.002.904.431242.32152.65.011.61.8071.3修圆形0.26000.37720.86570.9832110.98561495.1292.003.255.1743.02153.66.011.61.8071.3修圆形0.21670.37830.86570.9827110.98511969.7392.003.576.652297.801.216.611.61.8071.3修圆形0.19670.37880.86570.9824110.98492280.0692.003.757.332660.661.67.011.61.8071.3修圆形0.18570.37900.86570.9822110.98472486.3092.003.867.762901.84155.68.011.61.8071.3修圆形0.16250.37970.86570.9818110.98443041.6692.004.138.873551.38156.69.011.61.8071.3修圆形0.14440.38020.86570.9815110.98423633.2692.004.399.984243.44157.429.811.61.8071.3修圆形0.13240.38050.86570.9813110.98404143.9392.004.5910.4840.90157.610.011.61.8071.3修圆形0.13000.38060.86570.9812110.98394259.0092.004.6311.094975.