地质构造因素对煤与瓦斯突出的影响

nfluence of geological structural factors for coal and gas outburst

为深化对煤与瓦斯突出机理和过程的认识,综述了煤与瓦斯突出与地质构造的关联。从应力、瓦斯和煤的属性3个方面分析地质构造对突出控制因素的影响,将地质构造作用过程考虑到突出的孕育阶段,并提出下一步突出机制及防治方法的研究方向。结果表明,地质构造不仅会改变煤层的应力和瓦斯环境,同时还会造成煤层的几何形态和煤的物理结构改变,地质构造区内煤的物理结构变化对突出的影响应该被重视。地质构造作用过程被增加到突出的孕育阶段,构造作用过程是指构造运动对原始煤层应力和瓦斯赋存状态改变以及煤的物理结构改造过程。基于突出的地质信息、构造煤的形成及特性、突出与构造煤的内在联系等方面,凝练煤与瓦斯突出机制及防治方法的未来研究方向。

In order to deepen the understanding of the mechanism and process of coal and gas outburst,the correlation between coal and gas outburst and geological structure is studied in combination with literature review and case analysis.Then the influence of geological structure on outburst control factors is analyzed from three aspects of stress,gas and coal attributes.Finally,the geological tectonic process is considered as the incubation stage of the outburst,and the research direction of outburst mechanism and prevention methods in future is puts forward.The results show that geological structure not only changes the stress and gas environment of coal seam,but also changes the geometric shape of coal seam and physical structure of coal.The influence of coal physical structure change in geological structure area on outburst should be paid enough attention to.Taking the geological structure process into the outburst preparation stage,the geological structure process refers to the process of tectonic movement changing the stress and gas occurrence state of the original coal seam and the physical structure transformation of the coal seam.Based on the geological information of outburst,the formation and characteristics of tectonic coal,and the internal relationship between outburst and tectonic coal,the research directions of coal and gas outburst mechanism and prevention methods are summarized.