数值模拟水平应力对巷道稳定性的影响  

Numerical Simulation of the Influence of Horizontal Stress on the Stability of the Roadway

作　　者：王晓磊[1] 王耀普 马龙 

机构地区：[1]内蒙古科技大学矿业工程学院 [2]郑州煤电股份有限公司超化煤矿 [3]永城煤电控股集团登封煤业有限公司

出　　处：《现代矿业》2014年第1期27-30,共4页Modern Mining

摘　　要：水平构造应力是影响巷道围岩位移和应力变化及巷道围岩稳定的重要因素之一,为了解决水平构造应力对矿井巷道周围应力及应变的影响,采用ANSYS建模再导入FLAC3D软件进行数值模拟,研究巷道支护不同侧压作用下的动态变化,依据数值模拟结果,拟合出侧压力系数(λ依次取值1.0,1.2,1.6,2.0)与巷道变形的关系曲线,分析出巷道周边位移和应力的变化情况以及巷道周围塑性范围的分布,为巷道的安全开拓和合理维护提供可靠依据。The horizontal tectonic stress is one of the important factors that influences the displace- ment, variation of stresses, and stability of surrounding rock of roadway. In order to deal with the influ- ences of the horizontal tectonic stress on the surrounding rock stress and strain of mine roadway, Numeri- cal simulation research on the dynamic changes of the different side stresses under the roadway support is implemented by combining with the ANSYS and FLAC3~ software. According to the numerical simulation results,the curve of different coefficients of horizontal pressure （ the value of A can be 1.0, 1.2, 1.6, 2.0 ） and roadway deformation is obtained and the displacement of surrounding roadway, change of stress, and the distribution rule of roadway surrounding plastic range are analyzed in detail. On the whole, the nu- merical simulation and analysis results in this paper can provide reliable reference for exploiting and maintaining of the roadway.

关 键 词：水平应力 数值模拟 侧压系数 围岩应力-应变 

分 类 号：TD311[矿业工程—矿井建设]