利用退出煤矿修建抽水蓄能电站的地下厂房及复杂巷道群三维渗流规律研究  

Study on Three-dimensional Seepage Mechanism of Underground Powerhouse and Complex Roadways of Pumped Storage Power Station Constructed by Abandoned Coal Mine

作　　者：毛中华 宋立军 王惠民 张沛顶 徐亮 韩云 罗玉龙[3] 盛金昌[3] 詹美礼[3] 何淑媛[3] MAO Zhong-hua;SONG Li-jun;WANG Hui-min;ZHANG Pei-ding;XU Liang;HAN Yun;LUO Yu-long;SHENG Jin-chang;ZHAN Mei-li;HE Shu-yuan(Shanghai Datun Energy Co.,Ltd.,Shanghai 200120,China;China Electric Power Development Research Institute Co.,Ltd.,Beijing 100761,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]上海大屯能源股份有限公司,上海200120 [2]中电联电力发展研究院有限公司,北京100761 [3]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2023年第8期147-150,165,共5页Water Resources and Power

基　　金：中国科学院青海盐湖研究所基础研究青年创新交叉团队项目(lJCTD-2022-2);湖南省水利科技项目(XSKJ2021000-35);河海大学大型仪器设备共享基金(B220370201);湖南省水利科技项目(XSKJ2019081-04)。

摘　　要：针对退出煤矿修建抽水蓄能电站地下厂房及复杂巷道群的三维渗流分析与控制关系着地下空间长期渗控安全性,是目前利用退出煤矿修建抽水蓄能电站所面临的关键技术问题之一,考虑下水库(巷道群)不同围岩的加固方案,结合上水库、主厂房及煤矿采空区的空间位置,建立龙东煤矿复杂地下空间的三维渗流分析精细化有限元模型;开展了施工期及运行期各典型工况的三维渗流场分析,得到不同工况下地下巷道群的外水压力、地下厂房区外水压力、渗流量等重要设计参数;精细模拟抽水蓄能电站中的众多排水孔幕,开展各种可能不利情况下的渗流场计算,优化确定最优的排水孔幕间距。研究结果对退出煤矿建设抽水蓄能电站的渗流分析及渗控优化设计具有重要的指导意义。The three-dimensional seepage analysis and control of underground plants and complex tunnels are related to the long-term seepage safety of underground spaces,which is one of the key technical issues facing the construction of pumped storage power stations by abandoned coal mines.Considering the reinforcement schemes for different surrounding rocks of the lower reservoir,the spatial location of the upper reservoir,the main powerhouse and the coal mine extraction area,a refined three-dimensional finite element model for seepage analysis of complex underground space in Longdong coal mine was established.Three-dimensional seepage field analysis was carried out for typical working conditions during the construction and operation periods.Important design parameters such as external water pressure and seepage volume of the underground tunnels during the construction and operation periods were obtained.Refined simulation of the numerous drainage holes in pumped storage power stations was implemented.By calculations of the seepage field under various unfavourable conditions,the optimal spacing of the drainage holes was determined.The research results are of great significance in the evaluation of seepage safety and the design of underground roadway protection schemes for the construction of pumped storage power stations by abandoned coal mines.

关 键 词：退出煤矿 抽水蓄能电站 三维渗流分析 外水压力 排水孔幕 

分 类 号：TV223.1[水利工程—水工结构工程] TV554