杨村煤矿3煤区域提高开采上限可行性研究

Feasibility analysis on increasing upper mining limit of No.3 coal seam in Yangcun coal mine

针对杨村煤矿3煤316工作面受到上覆水体的威胁,以杨村煤矿316工作面的地质条件为背景,对316工作面提高开采上限确定防砂煤柱高度进行研究。结合杨村煤矿316工作面相邻工作面的开采经验类比法、经验公式法及数值模拟方法计算结果表明,316工作面综放开采后冒落带高度最大为30.2m,保护层厚度为15.2m,得到316工作面3煤全厚开采时留设的防砂煤岩柱高度为45.4m。而316工作面范围内基岩柱最小厚度约60m,故可得出该工作面可实现安全开采的结论。研究结果可为本工作面及兖州矿区后续类似工作面提高开采上限确定防砂煤柱高度提供主要的参考依据。

Abstract： Aimed at the problem of the safe mining of Yangcun coal mine has been seriously threatened by confined water above roof. B~ on the hydrogeological conditions of workface on 316 working face of Yangcun coal mine, the data of increasing upper mining limit and he of coal pillar were analysised by different methods. Combined three mehods, which were analogy, experience formula and numerical siml tion, the results shown that the maximum height of caving zone was 30.2m; the thickness of protected layer was 15.2m. So the height of pillar is 45.4m on 316 working face, while, the minimum height of rock above roof was about 60m due to the material. Thus the working 1 could mine Safety. And the results make a reference for the working face and the rationally mining in Yanzhou coal mine.