【摘要】 以现场实测资料和实际的开采条件为依据，建立回采工作面覆岩破坏的力学模型，分析初次开采时顶板最大冒落高度与采高、采深、顶板岩层的力学性质、采空区大小及顶板岩层的碎胀性之间的关系，利用微分方程求出初采覆岩破坏性影响区高度的解析解。更多还原

【Abstract】 According to actual in-situ measurment data and mining conditions, this paper estab-lishes a mechanical model of overlying strata failure above working face,analyses the relations between the maxirmum height of collapse zone after the first mining and the mining height,the mining depth, the mechanical properties of overlying strata, gob area, the breakabilities of top cover,by using differential equations obtains the analytical solution of overlying strata destruc.tive height.更多还原