阳泉矿区新景矿构造煤发育规律的数值模拟

预测构造煤发育区对矿井瓦斯突出预测具有重要意义。以阳泉矿区新景矿3号煤层为研究对象，根据其地质赋存条件，建立了相应的岩性不均衡力学模型，基于FLAC^3D数值模拟软件，研究了顶板砂岩透镜体存在情况下3号煤层围岩应力分布规律。结果显示：砂岩透镜体的存在使得煤岩地层的应力、位移分布不均，在透镜体影响范围内呈现应力集中现象，致使该区域煤层发生塑性变形；岩性不均衡条件下3号煤层的构造煤发育，进而证实了新景矿3号煤层顶板砂岩对构造煤发育的控制作用。

Numerical simulation study on the development patterns of tectonically deformed coal in Xinjing coal mine in Yangquan

The gas outburst occurs frequently at the area where the tectonically deformed coal is located, so understanding the developmental patterns of the tectonically deformed coal is beneficial to the prediction and evaluation of gas outburst. In this paper, we take No.3 coal seam of Xinjing coal mine in Yangquan as the research object, firstly, we established the mechanical model of the lithologic disequilibrium according to the geological conditions, then with the software FLAC3D, simulated the stress distribution of the rock surrounding seam 3 on which many sandstone lens lie. The simulation results show:because of the effect of the sandstone lens, the distribution of stress and displacement in coal and rock was unbalanced, the stress was concentrated in the scope influenced by the lens and resulted in the plastic deformation of coal seam in this area. The research results reveal that the developmental patterns of the tectonically deformed coal in seam 3 was affected by the lithological disequilibrium, and then confirmed that the sandstone on the roof had a control effect on the tectonically deformed coal zone.