抽水蓄能电站地下厂房防渗排水方案数值模拟研究
Study on numerical simulation of seepage control and drainage scheme for underground power-house of pumped storage power station
杨海滔 1张志崇 1金贤 1卢斌2
作者信息
- 1. 中水东北勘测设计研究有限责任公司,吉林长春,130021;水利部寒区工程技术研究中心,吉林长春,130061
- 2. 南京水利科学研究院,江苏南京,210029
- 折叠
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 m3/d,为地下厂房排水泵选型提供较大富余度.
Abstract
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 8 048.16 m3/d,which provides a greater flexibility for the selection of drainage pumps for underground powerhouse.
关键词
抽水蓄能电站/地下厂房/三维渗流场/防渗排水方案Key words
pumped storage power station/underground powerhouse/three-dimensional seepage field/seepage control and drainage scheme引用本文复制引用
出版年
2024
NETL
NSTL
万方数据