水平应力场条件下沿空巷道锚杆支护数值模拟分析

Numerical Simulation Analysis of Bolt Supporting Roadway Driven Along Next Goaf Under Horizontal Stress Field

使用ANSYS有限元数值模拟软件,开发了三维沿空巷道锚杆支护辅助设计系统,对水平应力场条件下沿空巷道锚杆支护的作用机理进行了数值模拟分析,主要研究了在水平应力场条件下不同锚杆长度、不同初始预紧力锚杆支护对巷道顶底板的稳定性的影响,分析了沿空巷道顶底板离层的变化规律,提出了指导现场生产的建议。

The aided design system of three- dimension roadway driven along next goal bolt supporting was developed by using ANSYS finite element numerical simulation software. The numerical simulation analysis was carried out on the function mechanism of bolts supporting of roadway driven along next goal under horizontal stress field. It mainly researched on the effect of bolt supporting with different lengths and different initial pretensions on the stability of roadway hangingwall and footwall under horizontal stress field. The movement rule of the hangingwall and footwall along the roadway was analyzed. Some conclusions that had significance to guide practice were put forward.