煤层群分组上行开采相似材料模拟和数值模拟研究

Similar Material Simulation and Numerical Simulation of Coal Seam Grouping Ascending Mining

通过理论分析计算,得出上下两组煤开采后的导水裂隙带发育高度以及理论破坏形态预计。通过计算机数值模拟、实验室相似材料模拟研究分析上下两组煤开采后覆岩破坏规律及顶底板应力分布规律、覆岩沉降规律,得出导水裂隙带最大值。数值模拟下煤层开采后的覆岩破坏高度,得到模拟的导水裂隙带高度,并与理论值,模拟得出的结果对比,综合分析分组上行开采覆岩破坏与运动规律。

Through the theoretical calculation and analysis, draw two groups （up and down） guide water fissure zone development height and theory of failure pattern expected after coal mining. Through the computer numerical simulation and laboratory similar material sim- ulation and analysis of the two groups strata damage rule and top floor stress distribution law after coal mining, law of overburden rock settlement, it is concluded that guide water fissure zone maximum. Numerical simulation lower coal strata damage height after mining, get simulation guide water fissure zone height, and take the results of comparative analysis with the theoretical simulation, comprehensive a- nalysis group ascending mining overlying rock destruction and motion.