【作者】 夏庆福； 孙双科； 柳海涛； 王晓松；

【Author】 Xia Qingfu Sun Shuangke Liu Haitao Wang Xiaosong (China Institute of Water Resources and Hydropower Research,Beijing 100038,

【机构】 中国水利水电科学研究院水力学所；

【摘要】 本研究结合乌江彭水水电站工程,通过1:100整体水工模型对泄洪消能布置方案进行了系列优化试验研究,最终提出了一种新型的"大差动出流+动水垫消能"泄洪消能方案。该消能方案的特点在于下游水位较低时,形成大差动挑射水流,各挑射水舌落水点和入水角变化较大,使得下游水体消能负担均化;在高水位时,形成淹没射流和挑流的混合流态,降低了挑射水流进入水垫塘内的潜水深度,增加了潜水行程,使得水垫塘内水体充分参与消能。试验结果表明该方案很好地适应了彭水水电站单宽流量大、弗氏数低、河谷窄、下游水位变幅大的泄洪消能特点,减轻了下游冲刷,并且尾水波动小,运行调度方式灵活,为类似工程提供了一种新的泄洪消能思路。更多还原

【Abstract】 Combined with Pengshui hydropower station located in Wujiang River,a serial of model tests were done to study the layout of flood discharge and energy dissipation.At last a new energy dissipator is optimized that has the characteristics of big differential flow and dynamic water cushion.The test re- sult indicates that this dissipator solved well the problem of the downstream river erosion.A new way is provided for similar project that has the flood discharge and energy dissipation characteristics of large unit-width discharge,low Froude number and narrow valley.更多还原