煤层群多重开采上保护层防突研究

针对目前煤层群开采所面临的瓦斯灾害问题,基于一般的保护层开采理论,对煤层群中多重保护层开采进行分析研究,并对同组煤层的多重上保护层开采进行现场试验,通过多参数的考察,对保护效果、保护范围和合理参数进行了综合分析,确定所进行的煤层群开采消除突出危险效果显著,完善了保护层开采的基本理论。研究成果对于对类似开采条件的矿井防治煤与瓦斯突出及瓦斯综合治理具有一定参考价值。

Study of Techniques for Controlling Coal and Gas Outbursts in Multiple Mining of Upper Protective Layers of Coal Seams

To solve the methane problems arising from mining coal seams ,studies are performed of effective procedures to mine the multiple protective layers, and field experiments at Xinzhuangzi mine are conducted in mining protective layers of the same coal seam. By means of analyzing numerous parameters obtained from the field experiments, the protection effects are evaluated and the protection scope and related parameters are reasonably determined. It is shown that the danger of outbursts have been evidently eliminated with the proposed procedure. This study helps to advance the theory of protective layers mining and is of reference value to mining under similar conditions.