断层构造区应力对煤与瓦斯突出的影响

发布时间：2018-04-21 04:29

本文选题：断层构造 + 煤与瓦斯突出　；参考：《煤矿开采》2015年04期

【摘要】：针对河南能化集团九里山矿断层构造区煤与瓦斯突出频发的现状,对九里山井田断层构造区应力状态分布特征进行了研究,并分析构造应力对煤与瓦斯突出的影响。在九里山井田不同埋深布置测点,利用应力解除法对其地应力场进行现场测量,找出九里山井田不同水平的地应力方位和量值;以井田内大中层断层为框架,建立了三维地质模型,结合地应力实测值,利用FLAC3D软件进行三维数值模拟,对井田区域应力场特别是断层构造带附近应力分布特征进行分析,并在此基础上划分出井田应力增高区,应力降低区和应力梯度区;将应力区域划分结果与煤与瓦斯突出区域相对比,分析断层区应力分布与煤与瓦斯突出的关系,为该矿煤与瓦斯突出防治提供参考依据。
[Abstract]:In view of the present situation of frequent coal and gas outburst in the fault structure area of Jiulishan Mine of Neng Hua Group, the distribution characteristics of stress state in the fault structure area of Jiulishan Mine Field are studied, and the influence of tectonic stress on coal and gas outburst is analyzed. At different buried depths in Jiulishan mine field, the field stress field is measured by stress relief method, and the azimuth and magnitude of in-situ stress at different levels are found out, and the large and middle fault in the mine field is taken as the frame. A three dimensional geological model is established and the stress distribution characteristics near the fault structural zone are analyzed by using FLAC3D software to simulate the stress field in the area. On the basis of this, the stress increasing zone, the stress decreasing area and the stress gradient area in the mine field are divided, and the stress area is compared with the coal and gas outburst area, and the relationship between the stress distribution in the fault area and the coal and gas outburst is analyzed. It provides reference for prevention and cure of coal and gas outburst in this mine.
【作者单位】：天地科技股份有限公司开采设计事业部;煤炭科学研究总院开采设计研究分院;中国矿业大学(北京)资源与安全工程学院;煤炭科学技术研究院有限公司安全分院;
【基金】：国家科技支撑计划课题(2014BAB13B02) 国家自然科学基金项目(U1261211) 中国煤炭科工集团科技创新基金面上项目(2014MS037)
【分类号】：TD713

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