“三软”煤层大采高工作面采场覆岩运动规律数值研究

Numerical Simulation of Overlying Strata Movement Rule of Large-mining-height Mining Face with Soft Roof， Soft Coal and Soft Floor

摘要: 基于大采高煤层开采后上覆岩层运动、破坏特征和应力特性变化规律，结合潘一矿1521(3)工作面工程地质条件，采用UDEC数值分析软件模拟上覆岩层力学变化与破坏过程，分析了“三软煤层”上覆岩层运动结构特点、运移规律及应力分布情况，并利用工程实测对该模拟结果进行了验证，对我国的大采高开采理论研究作了有益的探索。

Abstract: This paper applied UDEC to simulating mechanical variation and broken procedure of overlying strata on the basis of geological condition of 1521 (3) mining face in Panyi Colliery. It analyzed structure characteristic， movement rule and stress distribution state of overlying strata in mining soft coal-seam with soft roof and soft floor. An engineering example proved the result of numerical simulation.