论文部分内容阅读
基于对井工开采上覆岩层“两带”的变形演化规律的研究分析,针对神华乌海露天矿地下“L”型工作面的开采状况,结合现场勘察资料,利用理论计算和数值模拟的综合分析方法进行研究,其结果表明,冒落带、裂隙带范围与开采宽度呈现正相关的线性关系,呈现出圆滑“M”型驼峰状;其影响高度随着开采的推进而不断增大,采动至40 m达到充分采动,最大值分别为42 m和160 m;因此,造成裂隙带间的导通,威胁着矿山的安全开采。
Based on the research and analysis of the deformation and evolution law of overlying strata “two belts ” in underground mining, according to the mining status of underground “L ” type face in Wuhua open-pit mine, combined with the field survey data, The results show that there is a positive correlation between the range of the caving zone and the fracture zone and the width of the mining zone, showing a smooth “M” -shaped hump shape. The height of the caving zone increases with the development of mining While the maximum recovery is 40 m and 160 m, respectively. As a result, the conduction between fractured zones threatens the safe mining of mines.