【摘要】 以镇雄县大营煤矿C₅和C₆煤层为研究对象,针对近距离煤层群中的C₅煤层工作面底板采动破坏进行了力学分析,同时结合数值模拟方法,研究了C₅煤层作为首采工作面,在开采过程中的采动应力分布和底板破坏特征,并论证了C₅煤层作为首采工作面的可行性,C₅煤层的开采不会对C₆煤层后续开采造成太大影响,并为大营煤矿瓦斯抽采提供了基础性成果资料。更多还原

【Abstract】 Using the numerical simulation based on the C₅ and C₆ coal seam in Da-ying Coal Mine in Zhen-xiong County,this article analyses mechanically the mining damage of C₅ working face floor in contiguous seam group. Then it deals with the stress distribution and floor damage characteristics. The possibility of C₅ used as the first coal mining face has been tested,the use of which doesn’ t have any side effect on the sequential mining of C₆ coal seam. The results provide a basic reference for the coal mining and gas extraction in Da-ying Mine.更多还原