【摘要】 采用"砌体梁"理论,建立了沿空留巷关键块的结构力学模型,运用计算机数值模拟程序对沿空留巷不同岩性直接顶的受力进行研究,分析了沿空留巷上方顶板的趋向力学平衡时岩层运动的规律。通过分析得到关键块对沿空留巷不同岩性的直接顶受力变化情况,以及巷道直接顶的下沉规律。更多还原

【Abstract】 Using the theory of masonry beam, set up along the structural mechanics model of the key blocks for using computer numerical simulation of different lithology along the empty left lane direct stress is studied, on the top of the analyzed along the roof above the trend for mechanical balance, the laws of strata movement. It is obtained by analyzing the key block of along the empty left lane direct roof stress changes of different lithology, and sinking regularity of immediate roof of roadway.更多还原