管径800mm管径300充满度0.7充满度0.5水力坡度0.0008水力坡度0.045管壁粗糙系数0.0084管壁粗糙系数0.009过水断面面积375827.13mm2过水断面面积35342.92湿周1585.85mm湿周471.24水力半径0.236987697m水力半径0.075谢才系数10.80谢才系数1.48流速1.29m/s流速4.19流量0.4846m3/s流量0.1482流量41871.4606m3/d充满度≧0.5充满度≦0.5已知管径、充满度、水力坡度,求流速和、流量mmmm2mmmm/sm3/s充满度≦0.5已知管径、充满度、水力坡度,求流速和、流量