三维地质建模在亚碧罗水电站地下洞室群围岩稳定分析中的应用

摘要

In view of the difficulties of surrounding rock stability analysis for large-scale underground caverns ,3D geological model of project area was set up to simulate the complex geological conditions. 3D finite element analysis software of FLAC3D was used to analyze the surrounding rock stability of underground caverns of Yabiluo Hydropow⁃er Project. The outcomes include deformation,stress characteristics and plastic zone distribution. The results of analysis indicate the surrounding rock of caverns is stable on the whole.%针对大型地下洞室群围岩稳定分析问题，通过建立工程场区的三维地质模型，较好地模拟了工程场区的复杂地质条件，采用三维有限元分析软件FLAC3D，对亚碧罗水电站地下洞室群围岩稳定进行了三维计算分析，获得了洞周围岩变形与应力特征和塑性区分布，计算结果表明：洞室围岩总体稳定性较好。