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.
出处
《现代矿业》
CAS
2014年第1期27-30,共4页
Modern Mining
关键词
水平应力
数值模拟
侧压系数
围岩应力-应变
Horizontal stress, Numerical simulation, Coefficient of horizontal pressure, Surround- ing rock stress-strain
