坚硬顶板液压支架最优化推进步距数值模拟研究

Numerical Simulation Study of Optimized Advance Distance of Hydraulic Support of Hard Roof

为了确定坚硬顶板液压支架最优化的推进步距,以布尔台煤矿42106工作面为工程背景,采用FLAC3D和UDEC数值模拟软件对不同推进距离顶、底板破坏范围和超前支撑压力峰值进行了对比分析。研究结果表明,随着推进步距的增大,顶、底板破坏范围和超前支撑压力峰值均逐渐增大。

In order to obtained the optimized processing step of hard roof, the method of FLAC3D and UDEC numerical simulation was used. Taking the 42106 working face of Buertai Coal Mine as engineering background ,the damage zone and advanced supporting pressure were analyzed. The results show that the damage zone and advanced supporting pressure gradually increase with the increase of processing step.