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通过对石桥矿10402采面上隅角、回风流瓦斯及钻孔抽放效果进行分析,合理布置参数,采面回风流瓦斯由原来的0.9%左右下降到0.4%左右,彻底解决了瓦斯超限问题,实现了安全生产。
Through the analysis of the upper corner of 10402 mining face of Shiqiao Mine and the effect of drainage gas and borehole drainage, the parameters of the return air flowing from the face of the mining face decreased from about 0.9% to 0.4%, which completely solved the problems of gas super Limit the issue, to achieve safety in production.