【摘要】 该文采用模型试验重点针对具有深尾水、低水头和大单宽流量的泄洪闸体型进行了研究。以某在建河床式水电站为研究对象,基于该水电站实际运行方式,以出闸水流衔接流态、消力池流态、出池流速和下游冲刷作为控制指标,分别比较了Y型宽尾墩、常规宽尾墩及常规宽尾墩+底部贴角等泄洪闸体型,最终确定常规宽尾墩+底部贴角方案相对较优。该方案通过采用底部贴角减小了宽尾墩下部过流面积,继而增大了泄洪表孔出口水深,使水体在消力池内的波动和流速都相对减小,消能率相对提高,进而满足工程泄洪消能要求。更多还原

【Abstract】 In this paper, the model test was used to study flood discharge gate body types with deep tail water, low water thheea da catunadl loaprgere atsiionng lem owdied tohf ftlhoe wh. yTdarkoipnog wae rr isvteatriboend, thhyed frloopwo wpaetrt esrtnat ioof nt huen sdleuri cceo gnsattreu, ctthieo nf laos wt hpe artteesrena rcohf othbjee cstl uaincde bcaeslle,d tohne discharge velocity of the sluice pool and the erosion of the lower reaches were taken as control indexes. The Y type flaring gate pier, conventional flaring gate pier, conventional flaring gate pier and the bottom of the stick angle of sluice body were compared,and ultimately the conventional flaring gate pier and bottom corner scheme was relatively better. The program made use of the bottom corner reduced lower flaring pier flow area, and then increased the spillway outlet water depth, so that the fluctuation and velocity of the water body in the stilling pool were relatively reduced and the energy dissipation rate was relatively increased, and finally met the requirements of flood discharge and energy dissipation.更多还原