金竹山矿区地质构造特征及其对瓦斯分布的控制作用

发布时间：2018-06-20 08:55

本文选题：金竹山矿区 + 构造特征　；参考：《煤矿安全》2017年08期

【摘要】：从金竹山矿区地质构造特征出发,对其断裂和褶皱构造特征进行研究,发现矿区构造较为复杂,矿区范围内次一级褶曲较少,主要分布于西北翼,断层较发育,主要发育于井田边界及两翼浅部,以逆断层为主,正断层次之。通过分析矿区内各构造的活动强度,建立构造运动生热的数学模型对断裂摩擦热能释放量进行模拟,通过估算对比金竹山矿区西北翼和东南翼煤层断面活动的生热量,发现西北翼煤层断层面总生热量较高,东南翼仅八十亭断层规模较大,为5.04×1011J,而且东南翼逆断层多与附近的正断层沟通,造成应力释放,使得早期生成的瓦斯得到有效的逸散,整个东南翼断层附近的煤与瓦斯突出的为危险级别要小于西北翼。
[Abstract]:Based on the geological structure characteristics of Jinzhushan mining area, it is found that the fault and fold structure are more complicated, the secondary fold is less in the mining area, mainly distributed in the northwest wing, and the faults are relatively developed. It is mainly developed in the boundary of the mine field and the shallow part of the two wings, mainly with the reverse fault, followed by the normal fault. Based on the analysis of the active strength of the structures in the mining area, a mathematical model of tectonic heat generation is established to simulate the thermal energy release from the fracture friction. The heat generation and heat generation of the coal seam cross section in the northwest wing and southeast wing of Jinzhushan mining area are estimated and compared. It is found that the total heat generation in the fault plane of the northwest wing coal seam is relatively high, and the scale of the fault in the southeastern wing is only larger, which is 5.04 脳 1011J, and the thrusting fault of the southeast wing communicates with the nearby normal fault, which results in the stress release and the effective emission of the gas generated in the early stage. The danger level of coal and gas outburst near the fault in the southeast wing is smaller than that in the northwest wing.
【作者单位】：湖南省地质科学研究院;湖南地科院规划设计有限公司;中海石油研究总院;
【分类号】：TD163.1;TD713

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