宽顶堰堰流泄流能力计算(P=5％)闸门孔数n5中间闸墩侧收缩系数ξz0.955084519单孔净宽b010边闸孔侧收缩系数ξb0.908872896总净宽B050侧收缩系数ξ0.945842194闸墩厚度dz4断面面积1731.9549bb30.95原河道底高程169.5坎顶高程170河道流速1.870718458闸墩顶高程185.56堰上水深H015.73836838下游水位185自由过流流量系数m堰流淹没出流系数σ坎高P0.5下游水位hs150.953084821υ00.968860408闸墩高H16.06淹没系数σ0.647543406Q2764.311958m(直角）0.381422719m(圆角）0.383813805自由过流流量Q淹没过流流量QQ(直角）4988.664612Q(直角）3230.376875Q(圆角）5019.937852Q(圆角）3250.6276563240过闸单宽流量q64.8流速v1.870718458闸前水位H15.56水流动能校正系数α1流速系数Ф0.95重力加速度g9.81水跃淹没系数σ01.05下游水面超过堰顶的高度hs150.56引水角δ0总势能T015.73836838αq2/2gФ2237.1394445T0hc2-hc3237.1521309收缩水深hc4.618弗罗德数Fr24.346295184跃后水深hc''11.50074303151.49374303先取一个d值d2.54.874势能T18.23836838消力池出口宽度B150αq2/2gФ2237.1394445Thc2-hc3237.1704979收缩水深hc4.095弗罗德数Fr26.233318037跃后水深hc''12.55543081水跃长度校正系数0.8自由水跃长度Lj58.37697259消力池斜坡段水平投影长度Ls10消力池长度Lsj56.70157807