摘要
围岩稳定是地下岩体工程中的核心问题。当结构面产状比较复杂时,这些结构面与临空面组合,会形成一些可能失稳的关键块体,对这些块体的稳定性分析及加固设计尤为重要。采用空间拓扑理论及刚体极限平衡法,搜索出了潜在失稳块体,并对其稳定性安全系数进行了计算。算例表明,地下洞室块体稳定性分析对施工及运行期间的安全很有必要。
Surrounding rock stability is a key issue for underground projects. For rocks with complex structural planes, unstable rock blocks may exist in places where these structural planes are intersected with free surfaces. Stability analy- sis and reinforcement of these rock blocks are thus important. Based on the spatial topological theory and the limit equilibrium method for rigid bodies, stability of the surrounding rock in an underground powerhouse is analyzed. The potential unstable rock blocks are found and their stability safety factors are calculated. Importance of the rock block stability analysis for the safety of construction and operation is shown.
出处
《水电与新能源》
2016年第2期25-29,共5页
Hydropower and New Energy
关键词
块体
地下厂房
加固
结构面
rock block
underground powerhouse
reinforcement
structural plane
