基于FLAC^(3D)的“两带”高度预测数值模拟

Numerical Simulation of "Two Zone" Height Prediction Based on FLAC^(3D) Software

在分析百善煤矿水文地质工程材料基础上,应用FLAC3D软件对52采区"两带"高度预测进行数值模拟。主要对煤层顶板岩层破坏进行采动模拟,并分别在工作面斜长为70,90,120,150 m这4种情况下分析顶板岩层应力变化。通过模拟预测"两带"最大高度,得出了回采过程中不同工作面的冒高和裂高,能够指导防水煤岩柱的留设及安全开采。

Based on the analysis of Baishan Coal Mine hydrogeology engineering data,the prediction height of ＂Two Zone＂ of 5, mining area were simulated numerically by using the FLAC3D software. The roof strata destruction of coal seam was simulated, stress changes of four dip lengths of working face ,70,90,120,150 m ,were analysed respectively. Through the simulation of the maximum height of ＂ Two Zone＂ height, the height of the caving zone and water flowing fractured zone were obtained in mining process in different working faces, and the results can guide the design of waterproof coal pillars and the safety mining.