不同赋存条件巷道围岩力学特征数值模拟研究

Numerical Simulation Research on Surrounding Rock Mechanical Characteristics of Different Occurrence Conditions

为掌握巷道围岩力学特征,以淮南谢一矿513(3)工作面回采巷道的地质条件为背景,采用FLAC3D对不同埋深、不同倾角的巷道进行了数值模拟研究。结果表明:随着埋深的增加,巷道围岩水平位移、垂直位移、水平应力、垂直应力呈非线性增加趋势,并且随着埋深的增加,巷道围岩塑性区逐渐增加;岩层倾角变化对巷道水平位移、水平应力影响较大,对竖直位移、垂直应力影响不大,巷道围岩破坏范围随着岩层倾角的增加逐渐增大,可为安全生产提供指导。

In order to master the mechanical characteristics of surrounding rock,takes the geological conditions of Huainan Xieyi coal mine 513 （3）working face mining roadway as the background,FLAC3D is adopted to research numerical simulation to roadway of different buried depth and angle.The results show that roadway surrounding rock horizontal displacement,vertical displacement,horizontal stress and vertical stress are on the nonlinearity increase trend with the growth of buried depth,the plastic zone of surrounding rock increase gradually with the increase of bur-ied depth.The change of strata dip angle which have a great influence on horizontal displacement and horizontal stress and don’t much affect on vertical displacement and vertical stress.Damage range of surrounding rock is gradually in-creasing with the increase of strata dip angle.It can provide guidance for safety production.