Based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station , this paper discusses the flow characteristics , aerated characteristics of flaring gate pier for low dam pivot , the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier . it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata , poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters . thus , a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head , great unit discharge and low froud coefficient . it may be used for reference for design and test workers 结合鱼剑口电站坝下消能防冲试验研究成果，对低坝枢纽宽尾墩的水流特点、掺气特性、宽尾墩对大坝泄流能力和坝面压力的影响以及宽尾墩的消能效果等问题进行了初步探讨，提出了合理地使用宽尾墩结合辅助消能设施可有效地解决坝下覆盖层深，地质条件差，抗冲能力弱的低坝枢纽的消能防冲问题，从而为具有低水头，大单宽流量，低佛氏数特点的低坝枢纽泄洪消能开辟了一条新途径，可供有关低坝枢纽设计与试验工作者借鉴与参考
Abstract : based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station , this paper discusses the flow characteristics , aerated characteristics of flaring gate pier for low dam pivot , the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier . it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata , poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters . thus , a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head , great unit discharge and low froud coefficient . it may be used for reference for design and test workers 文摘:结合鱼剑口电站坝下消能防冲试验研究成果，对低坝枢纽宽尾墩的水流特点、掺气特性、宽尾墩对大坝泄流能力和坝面压力的影响以及宽尾墩的消能效果等问题进行了初步探讨，提出了合理地使用宽尾墩结合辅助消能设施可有效地解决坝下覆盖层深，地质条件差，抗冲能力弱的低坝枢纽的消能防冲问题，从而为具有低水头，大单宽流量，低佛氏数特点的低坝枢纽泄洪消能开辟了一条新途径，可供有关低坝枢纽设计与试验工作者借鉴与参考
So far as the aqueduct with large discharge and lower head is concerned , the non - uniform flow will occur in the aqueduct , when the discharge is enlarged after the water - carrying section being determined based on the design discharge and the given head ; for which the flow condition must be presumed , so as to determine the water surface profile 摘要大流量低水头渡槽根据设计流量和给定水头确定过水断面后，通过加大流量时，渡槽内就会发生非均匀流，需对这种水流情况进行推算，以确定渡槽在通过加大流量时的水面线。
Abstract : a research on theory and practice is conducted on the acoustic methods of discharge measurement in low head hydropower plant . taken hydraulic efficiency experiment in certain hydropower plant as examples , the general methods about how to locate the discharge measurement plane , install transducers and choose the integration methods are put forward . an improvement method is proposed finally 文摘:从理论上和实践上，对低水头电站超声波测流进行了较为详细的研究，并以某水电站为例，对测流断面定位、声路布置和面积积分给出了一般方法
