摘要
以西北某大型水电站地下厂房洞室群为例,在地质调查的基础上,对洞室群围岩岩体质量进行了分析评价。而后,运用数值模拟手段研究了岩体质量不同时,洞室群开挖效应——二次应力场、位移场和破坏区的差异,较全面地讨论了岩体质量对洞室群开挖效应的影响。
In this paper, taking the underground caverns of a planned hydroelectric station located in northwest China as an example, the quality of surrounding rocks g these underground caverns is assessed based on the data surveyed in the field. Excavation effects, such as secondary stress field, displacement field and failure zone, are simulated with 2D-σ software when the surrounding rocks quality rank change from I to IV. The influences of rock quality on excavation effects are discussed in detail.
出处
《地质灾害与环境保护》
2004年第3期82-86,共5页
Journal of Geological Hazards and Environment Preservation
关键词
岩体质量
地下工程
开挖效应
洞室
rock quality
underground works
excavation effects
numerical simulation
