水力发电2025，Vol.51Issue(4)：12-17,24,7.
大型地下洞室群节理岩体关键块体识别与稳定性分析
Identification and Stability Analysis of Key Blocks of Jointed Rock Mass in Large-scale Underground Cavern Group
摘要
Abstract
Based on the theory of key blocks,the three-dimensional underground excavation wedge stability analysis program Unwedge is used to identify the distribution characteristics of key blocks formed by the combination of structural planes with different occurrences and dip angles in the surrounding rock of the underground cavern group of Ruoqiang Pumped-storage Power Station,and the calculation model of the main powerhouse and main transformer cave of the underground cavern is established to analyze the stability of the key blocks.The support optimization measures are also proposed.The results show that,(a)the combination of dominant structural planes shows that there is one key block in the main plant in an unstable state under different working conditions;(b)the key blocks in the main transformer cave are in a stable state,and the lowest safety factor is 3.784;and(c)the joint support optimization measures can greatly increase the stability coefficient of the unstable blocks by 118.4%at the maximum,and all the unstable key blocks reach the stable state.关键词
地下洞室/关键块体/稳定性分析/结构面组合/支护优化/若羌抽水蓄能电站Key words
underground cavern/key block/stability analysis/structural plane combination/support optimization/Ruoqiang Pumped-Storage Power Station分类
建筑与水利引用本文复制引用
邵明磊,徐明,佘磊,姚远,李市双,康静..大型地下洞室群节理岩体关键块体识别与稳定性分析[J].水力发电,2025,51(4):12-17,24,7.基金项目
国家资助博士后人员计划资助项目(GZB20230589) （GZB20230589）
