红菱煤矿西三采区12^#煤层瓦斯赋存规律及控制因素分析

Study on gas occurrence law in No.12 coal seam of 3rd mining area in western of Hongling Coal Mine and its control factors

分析了红菱煤矿西三采区12#煤层瓦斯含量与埋藏深度的关系,研究了矿井地质构造、围岩岩性特征以及岩浆岩侵入对煤层瓦斯含量的影响,为指导煤矿瓦斯治理工作提供了可靠数据。结果表明,西三采区12#煤层瓦斯含量主要受埋藏深度控制,采区内地质构造简单,其对瓦斯的控制作用较弱,局部煤体受岩浆岩侵入的影响,瓦斯含量增大;西三采区整体瓦斯含量高,瓦斯压力大,煤与瓦斯突出危险性大,在采掘活动进行前,需要采取区域消突措施来消除煤与瓦斯突出危险性。

The relationship between gas content and burial depth in No. 12 coal seam of 3rd western mining area of Hongling coal mine was analyzed, and the factors influencing gas content were studied, including the geological structure, the characteristics of surrounding rocks and magmatic intrusion, providing a reliable data for the gas control. The results showed that the gas content is mainly affected by the burial depth, and the simple geological structure has a slight role on the gas content. The gas content would increase in the local seams where the magma invaded. In addition, the high gas content and pressure easily causes the coal and gas outburst in the 3rd mining area, so some corresponding measures must be taken to eliminate the outburst risk before mining.