【摘要】 对复杂变化地质环境下的主厂房围岩进行各种因素作用下的综合稳定分析,并依据多种测试手段,对开挖后洞群交叉部位的围岩位移、松动范围等进行动态跟踪监测。研究开挖过程中主厂房顶拱围岩的变形规律、围岩松动范围,并利用有限差分法对地下洞群各开挖步序的围岩位移进行计算分析。实时监测数据和理论计算成果对比分析表明:计算结果与监测数据较好吻合。因此研究成果对同类型大型地下洞群层状围岩变形破坏特征、变形规律、力学行为、松动范围的研究具有重要的参考价值,并对一些控制性指标的界定具有理论指导意义,同时对大型地下洞群的设计和施工具有一定的指导作用。更多还原

【Abstract】 The comprehensive stability of the rock mass produced by couple factors in complex geological environment is analyzed.By several measurements,the displacement and dynamic relaxed area at grottos′ intersection of the underground powerhouses are researched on site tracing monitoring.And the displacement of the rock mass is calculated by finite difference method.The comparison analysis of the tracing monitoring and calculated result shows that the calculated values agree well with the measured data.Thereforet,he research results present important reference for studying on the failure characteristics,mechanical behavior,deformation laws and relaxed area of the similar layered composite rock mass;and they have great theoretical significance for determining some control indexes.The research results have reference to the design and construction of the large underground powerhouses.更多还原