摘要
上保护层开采后邻近煤层瓦斯涌入工作面后造成工作面瓦斯超限,通过对瓦斯来源以及瓦斯运移分析提出了相关的降低保护层瓦斯超限的方法;提出不同层间距对被保护层和保护层的抽采钻孔的钻孔布置时机的影响分析和相应的解决方法。
The overrun of gas in the working face is caused by the influx of gas from the adjacent coal seam after the upper protective layer is mined. Through the analysis of the gas source and gas migration, the related methods for reducing the overrun of the gas in the protective layer are put forward. The analysis of the influence of different interval spacing on the drilling time of the protected layer and the extraction borehole of the protective layer, and the corresponding solving methods.
出处
《科技创新与应用》
2019年第3期60-61,64,共3页
Technology Innovation and Application
基金
国家应急管理部南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室基金项目"煤矿瓦斯爆炸灾害免疫机理及风险预警理论研究"(编号:E21727)
关键词
上保护层
瓦斯抽采
瓦斯超限
钻孔布置
抽采钻孔
upper protective layer
gas drainage
gas overrun
borehole layout
drainage borehole
