大型长廊式调压室围岩稳定性数值仿真分析

西部水电建设中，大型长廊阻抗武调压室应用越来越多，此类调压室整体形状窄长，一般具有高边墙、大跨度等特点．以黄金坪水电站调压室为例，结合其自身特点，运用弹塑性围岩理论，对开挖和灌浆锚固过程中的长廊式调压室围岩稳定进行数值分析．最后，针对长廊式调压室特点给出有利于围岩稳定的建议，为同类工程及相关研究提供参考．

Numerical Simulation Analysis of Stability of Wall Rock of Large Long Corridor Surge Chamber

For the hydropower construction in Western China, more large long corridor surge chambers are applied. This kind of surge chamber has the long, narrow shape, and has the character of high sidewall and high span. Taking the Huangjinping Hydropower Station for example, in light of its characteristics and based on the elastoplastic wall rock theory, numerical simulation analysis is performed on the stability of wall rock in the process of excavation, grouting and anchoring. Finally, aiming at the character of long corridor surge chamber, some suggestions favorable for the stability of wall rock are given so as to use as reference for the similar projects and correlation study in the future.