巷道不同开挖角度下地应力分布演化规律探究

Research on the Distribution and Evolution of Ground Stress at Different Angles of Tunnel Excavation

为探究巷道不同开挖角度下地应力的分布演化规律,本文以某煤矿回风巷为背景,采用理论分析、现场实测与FLAC3D数值模拟相结合的手段探究巷道不同角度开挖条件下地应力分布演化规律。研究结果表明,最大水平应力对巷道的影响主要与巷道的夹角大小有一定关系。

In order to explore the distribution and evolution rule of crustal stress under different excavation angles,based on the background of a coal mine's return roadway,the evolution law of crustal stress under different excavation conditions is explored by means of theoretical analysis,field measurement and FLAC3D numerical simulation.The results show that the influence of the maximum horizontal stress on the roadway is mainly related to the angle of the roadway.