基于UDEC巷道掘进矿压显现的数值模拟

Numerical Simulation Study on Strata Pressure Regularity in Drifting Based on UDEC

通过采用UDEC软件,依据钻孔柱状图和采掘应力影响范围建立了相应的几何模型,根据煤岩体物理力学性质建立相应的材料模型,在此基础上结合地应力数据,从而完成数值模型。通过模拟实际巷道开挖尺寸及方位,得出巷道前方的应力分布和巷道两帮位移分布,为巷道冲击地压显现防治提供了理论支持。

The corresponding geometric model on UDEC is established by the drilling bar chart and influence basin of mining stress, with ma- terial model established by physical and mechanical properties of coal and rock. The numerical model is completed with geostress data based on geometric model and material model. The stress distribution of roadway and displacement distribution of the roadway sides can be obtained by simulated roadway excavation size and location. The result provides a theoretical support on the prevention of rock brusting in the roadway.