深部构造复杂区大断面硐室群围岩稳定性模拟分析  

Simulation on stability of surrounding rock of large section chambers in deep structural complex areas

作　　者：林惠立[1,2] 石永奎[2] 

机构地区：[1]煤炭科学研究总院经济与信息研究分院,北京100013 [2]山东科技大学资源与环境工程学院,山东青岛266510

出　　处：《煤炭学报》2011年第10期1619-1623,共5页Journal of China Coal Society

基　　金：国家自然科学基金重点资助项目(51034003);国家自然科学基金资助项目(50674063)

摘　　要：以某煤矿-770 m扩容泵房为研究背景,采用理论分析、数值模拟及现场实测相结合的综合研究方法,研究得到深部构造复杂区内大断面硐室围岩的变形破坏原因和稳定性控制对策,运用数值分析软件FLAC3D分析了耦合支护后泵房立体交叉硐室群应力场、位移场和破坏区特征,并对硐室稳定性和支护参数的合理性做出了评价。现场工业试验表明:硐室围岩变形量较小,30 d内顶底板移近量仅为12.5 mm,两帮移近量为7.5 mm,硐室围岩的稳定性较好,达到了理想的支护效果。-770 m dilatancy pump house of a coal mine was studied using the integrated method combining theory analysis,numerical simulation with field study,to acquire the reasons for deformation and failure of surrounding rock of large section chamber in deep structural complex areas and control countermeasures of stability.The software FLAC3D was applied to analyze the characteristics of stress field,displacement field,and failure zone of interchange chambers of pump after coupling support,and to evaluate the stability of the chambers and the rationality of the support parameters.The field experiment shows that displacement of surrounding rock of chamber is very little;the roof and floor movement is only 12.5 mm within 30 days,and displacement of walls reaches 7.5 mm;surrounding rock stability of the chamber is relatively good,reaching ideal supporting effect.

关 键 词：深部构造复杂区 硐室群 围岩稳定性 数值模拟 

分 类 号：TD322.4[矿业工程—矿井建设]