摘要
通过分析土朱煤矿近年来煤与瓦斯突出特征、突出原因、突出规律,采取突出预测预报、防治措施、效果检验和施工验证等,得出了该矿工作面突出预测预报敏感指标临界值为:瓦斯涌出初速度临界值(qm)l5L/min,钻屑量指标(Smax)6kg/m,钻屑瓦斯解吸指标(K1)0.5ml/g·min1/2;生产实践表明,区域性防突技术(上保护层开采和瓦斯抽放)和局部防突措施(如采用深孔松动爆破、水力冲孔、排放钻孔、金属骨架和超前钻孔等)相结合,能较好地解决土朱矿开采煤层群的防突问题.
The paper analyzed the characteristics,reasons and rules of coal and gas outburst of Tuzhu coal mine,and investigated the relevant preventive measures,effect of construction inspection and verification which have been used in recent years.Studies have shown that the critical value of sensitive indicator of outburst forecast at coal mine working face are：the critical value is 5 L/min of initial velocity of gas emission（qml）,the amount is 6kg/m of drill cuttings（Smax）,the desorption indicator is 0.5 mL/g·min1/2 of drill cuttings gas（K1）;regional outburst prevention techniques and localized outburst prevention techniques which have been taken in Tuzhu coal mine,are better solutions to the outburst preventive problems of the seam group mining.
出处
《矿业工程研究》
2010年第2期44-47,共4页
Mineral Engineering Research
基金
国家安监总局资助项目(07-210
08-204)
湖南省煤监局资助项目(07-05
HN08-20
HN09-01
HNMJ10-06)
关键词
煤与瓦斯突出
中小煤矿
预测指标
防治技术
coal and gas outburst
medium and small coal mines
predictive indicator
preventive measures
