水力发电2025，Vol.51Issue(3)：71-77,7.
基于能量释放的抽水蓄能电站地下厂房围岩稳定性分析
Stability Analysis of the Surrounding Rock of Underground Powerhouse of a Pumped-storage Power Station Based on Energy Release
摘要
Abstract
The underground powerhouse of a pumped-storage power station represents characteristics of high ground stress,high sidewalls,and a large span.To accurately reflect the discontinuous deformation and evaluate the brittle failure intensity of its surrounding rock,the excavation process is simulated using the FLAC3D numerical simulation method on the basis of the hard rock degradation model and incorporating a local energy release rate.The energy release,displacement and plastic zone are used as evaluation indicators to analyze the stability.The results indicate that,(a)the local energy release rate index can reasonably reflect the severity of local surrounding rock brittle failure during excavation,while the elastic release energy index can quantitatively describe the strain energy release process of the overall surrounding rock during excavation;(b)throughout the excavation process of underground powerhouse,the surrounding rock remains in an overall stable state,with the surrounding rock response exhibiting significant temporal and spatial effects;and(c)the energy release during the second to third excavation periods is relatively higher and requires special attention.关键词
抽水蓄能电站/地下厂房/围岩稳定性/能量释放/位移/塑性区/FLAC3DKey words
pumped-storage power station/underground powerhouse/stability of surrounding rock/energy release/displacement/plastic zone/FLAC3D分类
建筑与水利引用本文复制引用
陶洪辉,韩晓凤,苏国韶,陈贤杰,刘海滨..基于能量释放的抽水蓄能电站地下厂房围岩稳定性分析[J].水力发电,2025,51(3):71-77,7.基金项目
国家自然科学基金资助项目(52169021) （52169021）
中国能源建设股份有限公司重大科技项目(CEEC2021-KJZX-05) （CEEC2021-KJZX-05）
