摘要
通过对平煤集团十一矿近几年瓦斯赋存状况及赋存规律的研究,发现开采区域中瓦斯和二氧化碳来源主要区域是回采区和采空区。煤层瓦斯涌出量增大的原因主要是随着开采深度的增加,同期产量增加而增大。矿井瓦斯、二氧化碳涌出量大的开采水平为二水平,煤层是二煤组。因此矿井瓦斯防治的重点是二水平、二煤组。采用瓦斯放散初速度、坚固性系数等参数对主要开采煤层煤与瓦斯突出危险性进行预测,给矿井瓦斯管理及安全生产应采取的防范措施提供了参考。
Based on study of the state and regularity of gas occurrence in No. 11 mine in the recent years, the authors find out that the main sources of gas and carbon dioxide in the mining zone are the mining panel and the gob. The main reasons for increase of gas emission are increase of mining depth and increase of coal output in the same period. The mining level with high emission of mine gas and carbon dioxide is No. 2 level, and coal seam with high emission of gas is No. 2 group of seams. Therefore, stress of gas control is laid on No. 2 level and No. 2 seam group. Prediction of risks of coal and gas outburst of the major worked coal seam is made by using parameters, like initial gas dispersive velocity, hardness scale, etc., which provides reference for taking prevention measures in gas control and safety in production.
出处
《中国煤层气》
2010年第4期14-18,共5页
China Coalbed Methane
关键词
瓦斯
赋存规律
突出危险性
预测
Gas
occurrence law
risk of outburst
prediction
