摘要
抽水蓄能电站地下厂房埋深较大,受排水廊道、隧洞充水、复杂地质条件、天然地下水等多种因素影响,常形成复杂渗流场。基于FEFLOW软件建立包含输水隧洞、地下厂房、排水廊道、围岩、断层的三维渗流稳态模型,根据模拟结果对初始防渗排水方案进行了优化,取消不必要的中平段排水廊道,并抬升下平段排水廊道,使其以自流方式排出渗水。厂房区排水廊道和洞室群渗流量合计8048.16 m^(3)/d,为地下厂房排水泵选型提供较大富余度。
The underground powerhouse of pumped storage power station is deeply buried,and is affect⁃ed by many factors such as drainage gallery,water filling of tunnel,complex geological conditions and natural groundwater,so the complex seepage field is often formed.Based on the FEFLOW software,a three-dimensional steady state model of seepage including water transmission tunnel,underground pow⁃erhouse,drainage gallery,surrounding rock and fault is established.According to the simulation results,the initial seepage control and drainage scheme is optimized,eliminating unnecessary drainage galleries in the middle horizontal section and lifting drainage galleries in the lower horizontal section to discharge seepage water in the form of natural flow.The total seepage flow of drainage galleries and cavern group in the powerhouse area is 8048.16 m3/d,which provides a greater flexibility for the selection of drainage pumps for underground powerhouse.
作者
杨海滔
张志崇
金贤
卢斌
YANG Haitao;ZHANG Zhichong;JIN Xian;LU Bin(China Water Northeastern Investigation,Design and Research Co.,Ltd.)
出处
《大坝与安全》
2024年第3期20-23,34,共5页
Dam & Safety
关键词
抽水蓄能电站
地下厂房
三维渗流场
防渗排水方案
pumped storage power station
underground powerhouse
three-dimensional seepage field
seepage control and drainage scheme