吉林省道清矿北斜井南平峒煤层冲击地压危险性数值模拟

通化矿业(集团)公司道清煤矿地质构造复杂,且已经进入深部开采阶段,煤体采动所形成的矿压对安全生产造成较大威胁。为预测该矿北斜井南平峒煤层冲击地压危险性的程度,对其煤层进行冲击地压危险性数值模拟,分析了煤层在自重应力场和构造应力场下水平应力、垂直应力、XY剪切应力大小及分布规律,得出应力集中区出现在F3号逆掩断层与煤层交汇处,即此处冲击地压危险性程度相对较大,开采时应注意防范,确保矿井安全开采。

Numerical simulation on burst risk of coal layers in Nanpingtong of the North inclined shaft of Daoqing Coal Mine

Tonghua-Daoqing Coal Mine lies in complex geological structure zone and has entered into the deep mining stage,The mine pressure of coal mining cause bigger threat for production safety.To forecast the risk degree of rockburst at Nanpingtong of the North Inclined Shaft of Tonghua-Daoqing Coal Mine.We studied on burst risk numerical simulations on coal mine and analyzed the size and the distribution of horizontal stress,vertical stress,and shear stress in XY-plane.The results of this research are that the stress concentration appears in the junction of F3 reverse fault and coal seam,namely there rockburst risk degree is opposite bigger,so mining there should pay attention to the prevention and ensure the safety of mining.