摘要
根据青岗坪煤矿具体的地质条件,采取在回风顺槽工作面煤壁侧打高位钻场的方式,以及在工作面上隅角老塘侧埋放抽放管路,通过对抽放效果进行分析,合理布置参数,工作面上隅角瓦斯由原来的0.8%左右下降到0.2%左右,彻底解决了瓦斯超限问题,实现了安全生产。
According to the geological conditions of the Qing Gang Ping Coal Mine,the coal wall groove face side playing high level drilling field in the air return way,as well as in the upper corner of goaf side buried drainage pipe,the drainage effect is analyzed,the reasonable arrangement parameters,the top corner gas decreased from original about 0. 8% to about 0. 2%,completely solve the problem of gas overrun,and realizes safe production.
出处
《山东煤炭科技》
2014年第3期70-72,共3页
Shandong Coal Science and Technology
关键词
高位钻孔
隅角埋管
瓦斯抽放
high level borehole corner tube gas drainage
