华北聚煤区南缘煤与瓦斯突出与推覆构造关联性分析
Association Analysis of Coal and Gas Outburst and Nappe Structure in the Southern Margin of North China Coal Accumulation Zone
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摘要: 分析了华北聚煤区南缘逆冲推覆构造形成的动力学机制和构造特征,探讨了推覆构造对研究区内煤体结构、构造应力和瓦斯含量等方面的影响或控制,认为推覆构造对区内构造煤的发育与分布具有控制作用,区内构造特征主要为逆冲推覆构造下的压性、压扭性断裂,推覆构造有利于瓦斯的保存,高突矿区的范围宏观上具有沿推覆构造带分布的规律,揭示了推覆构造与煤与瓦斯突出灾害的密切联系。Abstract: The paper analyzes the dynamic mechanism and structure features of thrust nappe structure in Southern margin of North China coal accumulation zone,and explores the influence or control of the nappe structure on coal structure,tectonic stress and gas content in the study area.It is considered that the nappe structure has control effect on the development and distribution of the regional tectonic coal.The structural characteristic of the region is mainly the piezotropy under thrust nappe structure and compression and scissor fault.Nappe structure is conducive to the preservation of gas,and the scope of high-outburst mine has the law of distributing along the nappe tectonic belt,which reveals a close contact of the nappe structure and coal and gas outburst disasters.
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