矿井锚喷支护数值分析

Numerical analysis of bolting and shotcrete lining

本文对某矿井的井筒、煤巷的锚喷支护进行了有限元数值分析，给出了剪应力和合位移等值线图，开挖后塑性区图和最终塑性区图，以及考虑构造应力情况下的变化。经验证支护参数合理，目前这些典型井巷围岩是稳定的，支护工作状态良好，为后期工程提供了一些有价值的信息。

Abstract In accordance with the site situations of bolting and shotcrete lining used at the shaft and coal roadway in a colliery, relevant finite element numerical analysis is carried out. The contour diagrams of shear stress and displacement, distribution of plastic zone in initial stage (just after extraction) and final stage, and their changes under the action of tectonic stress is provided. It prove that those supporting parameters are reasonable. At present, the rock surrounding the mentioned typical chambers is still stable, the supports are in good state. All the analysis provide lot valued information for succeeded engineering.