摘要
针对西藏扎拉水电站调压室顶拱上方存在的不良地质条件问题,提出了一种利用施工支洞作为调压室上室的优化布置方案,并结合水力过渡过程计算,分析了涌浪的波动过程。结果表明:施工支洞作为调压室上室能够有效削减最高涌浪水位。当最高涌浪低于施工支洞顶拱时,涌浪不会对支洞顶拱的结构安全造成危害,也不会阻碍支洞的排气过程。利用施工支洞作为上游调压室可显著降低调压室顶拱,并成功避开不良地质带,有利于水电站安全稳定运行。
In view of the problem of unfavorable geological conditions above the top arch of the pressure regulating chamber of Xizang Zhala Hydropower Station,we proposed an optimal layout scheme using the construction branch tunnel of the surge chamber as the upper chamber,and analyzed the fluctuation process of the surge using hydraulic transition calculation.The results showed that the construction branch tunnel could effectively play the role of reducing the highest surge water level,and the highest surge is lower than that of the construction branch arch,and the surge would not cause harm to the structural safety of the branch cave roof arch,nor would it hinder the exhaust process of the branch hole.The results indicated that the use of the pressure regulating chamber construction branch as the upper chamber can significantly reduce the top arch of the surge chamber and successfully avoid the bad geological zone,which is conducive to the safe and stable operation of the hydropower station.
作者
蔡爽
张永健
邓清树
杨彬
殷成成
彭志远
CAI Shuang;ZHANG Yongjian;DENG Qingshu;YANG Bin;YIN Chengcheng;PENG Zhiyuan(Datang Xizang Energy Development Co.,Ltd.,Lhasa 850000,China;Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China)
出处
《水利水电快报》
2024年第8期42-46,共5页
Express Water Resources & Hydropower Information
关键词
调压室
水力过渡过程
施工支洞
扎拉水电站
surge chamber
hydraulic transition process
construction branch tunnel
Zhala Hydropower Station
