岩土力学2025，Vol.46Issue(5)：1581-1594,14.DOI:10.16285/j.rsm.2024.1234
双江口水电站极高应力大型地下厂房硬岩破坏机制与稳定性控制研究
Failure mechanism and stability control of hard rock in extremely high stress large underground powerhouse of Shuangjiangkou hydropower station
摘要
Abstract
The construction of underground powerhouses for hydropower stations has always been a focal point and challenge in design and construction due to their large scale,high side walls,extensive spans,and complex geological conditions.This study relies on the Shuangjiangkou hydropower station,known for having the highest geostress globally,to investigate the engineering issues related to hard rock deformation and failure under extremely high stress,along with stability control methods.The research is divided into two main aspects:Firstly,we estimate and adjust the in-situ stress field of underground caverns in deep-cut valley areas using limited geostress test data and the brittle failure phenomena observed in the pilot tunnels.Secondly,we examine the typical failure phenomena of underground caverns under extremely high stress,including global issues from high-stress failure and block instability due to localized rock veins cutting,along with corresponding failure mechanisms and control measures.The findings offer valuable case studies and references for constructing large underground caverns in high-stress hard rock environments.关键词
大型地下洞室/高应力/破坏现象/岩脉/稳定性控制Key words
large underground caverns/high stress/failure phenomena/rock vein/stability control分类
建筑与水利引用本文复制引用
李邵军,陈刚,张世殊,李永红,柳秀洋,李治国,徐鼎平,程丽娟,江权,汤大明..双江口水电站极高应力大型地下厂房硬岩破坏机制与稳定性控制研究[J].岩土力学,2025,46(5):1581-1594,14.基金项目
国家自然科学基金资助项目(No.52279117,No.52325905) （No.52279117,No.52325905）
中国电力建设股份有限公司科技项目(No.DJ-HXGG-2023-04).This work was supported by the National Natural Science Foundation of China(52279117,52325905)and the Technology Project of PowerChina(DJ-HXGG-2023-04). （No.DJ-HXGG-2023-04）
