煤矿安全2025，Vol.56Issue(6)：42-50,9.DOI:10.13347/j.cnki.mkaq.20240275
受载含瓦斯煤岩组合体失稳致灾试验研究
Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination
摘要
Abstract
With the depletion of shallow coal resources in China,the depth and intensity of coal mining have gradually increased in recent years,the amount of gas emission has increased sharply,and coal-rock compound disasters occur frequently,which brings great risks to mine safety production.In order to have a better understanding of the formation mechanism of coal-rock-gas com-pound dynamic disaster,the coal-rock combination with gas was taken as the research object to carry out the disaster experiment of coal-rock combination instability under different working conditions.The results show that when the accident occurs,the scattered pulverized coal is mainly concentrated in the middle and distal areas,and the throwing distance can be up to 17 meters.The relative intensity of disasters for coal-rock formations 1#to 3#increases from 12.61%to 20.53%under different gas pressures,showing an in-crease of 7.92%,and the type of disaster changes from compound disaster to coal and gas outburst.The smaller the gas pressure and roof strength,the greater the coal strength and ground stress,and other conditions are the same,it can promote the coal-rock-gas compound dynamic disaster.关键词
复合动力灾害/含瓦斯煤岩组合体/煤与瓦斯突出/力学失稳/瓦斯涌出量Key words
composite dynamic disaster/gas bearing coal rock combination/coal and gas outburst/mechanical instability/amount of gas emission分类
矿业与冶金引用本文复制引用
李阳,李远芳,施展,朱逸凡..受载含瓦斯煤岩组合体失稳致灾试验研究[J].煤矿安全,2025,56(6):42-50,9.基金项目
国家自然科学基金资助项目(52130409,52121003) （52130409,52121003）
