丰城矿区煤与瓦斯突出分布规律及其影响因素

Outburst distribution law of coal and gas and the influencing factors in Fengcheng mining area

为了促进丰城矿区的防突工作,根据矿区地质条件,以向斜轴部为界将矿区B4煤层开采区域划分为北翼开采煤组和南翼开采煤组,结合丰城矿区186次突出的分布状况,进而分析了突出分布规律及影响因素.结果表明:丰城矿区北翼煤组以小型突出为主,而南翼煤组以中型突出为主;其中,地质构造及顶底板岩性是控制丰城矿区煤与瓦斯突出的主要影响因素,突出分布具有明显的区域性,北翼煤组发生突出次数多于南翼煤组.这不仅为矿区的防突工作提供了理论指导,也为类似条件的矿区提供了借鉴.

In order to better prevent and control the outburst task, in accordance with the geologic condition of Fengcheng mining area, the B4 coal seam is divided into coal seam of south limb coal seam and coal seam of north limb which are established on the axis of anticline. Combining the 186 coal and gas outbursts in Fengcheng mining area with characteristics of distribution, this paper analyzes the outburst distribution law of coal and gas and influencing factors. Results show that the coal group of north limb generally occurs small - scale outburst, coal group of south limb mainly happens medium - scale outburst, such as the geological structure and the lithologies of seam roof and floor are the principal influencing factors, coal and gas outbursts indicate evidently regional, the number of coal seam outburst with north limb is more than that of the south limb. This can provide the theoretical basis for the prevention of coal and gas outburst, and ensure safety in the mine production, meanwhile it can be used as references for similar mining areas.