某水电站地下洞室块体稳定性研究

影响地下洞室安全的因素很多,不稳定块体是重要因素之一,因此在地下洞室开挖前,根据勘探平硐的资料,搜索出地下洞室围岩的不稳定块体,对于保证施工安全和完工后地下洞室的安全运行是非常必要的。本文以某水电站地下洞室为例,基于岩体应力变化,运用块体理论分析了围岩块体的稳定性。

Research on Stability of Rock Block of Underground Chamber of a Hydropower Station on Yellow River

There are many factors to affect the safety of an underground cavern.Instability rock mass is one important factor to threaten the safety of an underground chamber.By the exploratory adit data,searching the instability rock blocks of the underground cavern surrounding rock that is necessary to ensure the safety of the construction and operation of the underground chamber after its completion.Taking a hydropower station located on the Yellow River as an example,based on dynamic variation of the surrounding rock stress,the block stabilities under different stress fields are analyzed by using block theory in this paper.