基于UDEC的采场矿山压力显现数值模拟研究

Study on Numerical Simulation of the Presentation of the Mine Pressure with UDEC

运用UDEC数值模拟软件,以山西某矿F2105综采工作面为工程背景,根据该工作面岩石物理力学实验,确定数值模拟所需参数,对该工作面的矿山压力显现和覆岩运移规律进行研究。分析矿山覆岩运移和矿山压力显现过程得出:F2105综采工作面初次来压步距为25 m,周期来压步距平均为18 m,采场覆岩失稳形式主要为滑落失稳,岩层破断后呈台阶岩梁结构。

Regarding fully mechanized coal face F2105 of one Shanxi mine as the case and based on the rock physi- cal mechanics experiments, the numerical simulation software UDEC is applied to determine the parameters needed and conduct studies on the presentation of the ground pressure and the laws of overlying strata movement in this work- ing face, finding out that the first weighting interval of fully mechanized coal face F2105 is 25 m, the average value of periodic weighting length is 18 m, the mainly failure form of overlying strata in the stope is slip failure and broken rock show a step rock beam structure.