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以蒋家河煤矿为研究对象,通过数值模拟,对抽采钻孔的卸压范围进行分析,最终确定卸压抽采钻孔终孔布置在裂隙带离层区抽采效果最好。将研究成果在工作面现场应用,抽采效果非常显著。利用高位钻孔抽采瓦斯在保障工作面的安全回采中起到了重要作用。
Taking Jiangjiahe coal mine as the research object, the pressure relief range of drainage borehole was analyzed by numerical simulation. Ultimately, the final hole layout of the pressure relief pumping borehole was the best in the fractured zone. The research results in the face of the field application, pumping effect is very significant. Utilizing high-level drilling to extract gas plays an important role in ensuring safe mining face recovery.