某大型地下洞室群围岩稳定性分类研究  

STABILITY RANKING SYSTEM OF ROCKMASS SURROUNDING A LARGE-SCALE UNDERGROUND CAVERN GROUP

作　　者：李攀峰[1] 张倬元[1] 陶连金[2] 

机构地区：[1]成都理工大学工程地质研究所,成都610059 [2]北京工业大学,北京100022

出　　处：《工程地质学报》2004年第1期25-29,共5页Journal of Engineering Geology

摘　　要：根据地下洞室群的特点 ,选取岩体质量综合级别、块体状况、开挖位移及破坏区、岩爆烈度四因素为分类指标 ,建立了大型地下洞室群围岩稳定性分类体系。针对不同稳定性等级 ,提供了相应的开挖方式和支护处理建议。最后 ,运用该分类体系对某地下洞室群的主厂房进行了分析评价。结果表明主厂房围岩以基本稳定的Ⅱ类为主 。Considering the characteristics of underground cavern groups, a stability ranking system was introduced to denote the stability of rock masses surrounding the underground caverns. In this system four factors were used as indices including comprehensive quality level of rock mass, parameters of wedge (volume, shape and stability), displacement and failure zones, and intensity of rock burst. It also provided excavation schemes and supporting measures according to stability ranks. Then a case study was conducted using the ranking system to evaluate the surrounding rock mass stability of an underground cavern group at a planned hydropower station. The results showed that the stability rank of these caverns was classified as Grade II (In other words, the stability was good). The primary failure modes would be local wedge instability and light to moderate rock burst.

关 键 词：地下洞室群 围岩 稳定性 岩体质量 

分 类 号：TD264.3[矿业工程—矿井建设]