永夏矿区三煤组开采的相似模型实验及数值模拟

Similar Model Experiment and Numerical Simulation on Mining No.3 Coal Seam Group in Yongxia Mineral Area

采用相似模型实验和数值模拟2种分析方法,对河南永城市永夏矿区三22、三23和三24煤层综合开采进行分析和研究,揭示了多煤层开采过程中,在不同采动情况下,覆岩变形、破坏和岩层内部应力状态的变化规律,为类似地质条件煤层开采提供了科学依据。

This thesis concentrates on the comprehensive mining of Ⅲ2^2 and Ⅲ3^2 and Ⅲ4^2 coal seam in Yongxia mineral area in Yongcheng city of Henan province by similar model experiment and numerical simulation.It recovers the laws of shaping,failure of overburden rocks and the change laws of stress state inside the rocks during the process of multi-coal seam mining under different mining situation.It also provides a scientific basis for the solution of practical problems.