豫西告成煤矿滑动构造区瓦斯赋存特征

地质构造是煤与瓦斯突出的控制因素,豫西煤田中滑动构造普遍发育。运用区域构造演化、瓦斯赋存构造逐级控制理论,在系统分析煤田地质勘探和矿井揭露的瓦斯地质资料的基础上,研究了告成煤矿滑动构造的形成机制及其对煤系、煤层和瓦斯赋存的控制作用。告成煤矿位于芦店滑动构造的西部,受两期滑动构造的影响,煤层厚度变化剧烈,构造煤成层发育,煤层顶板结构形成了张性角砾岩、断层泥和张性角砾岩复合、原生顶板(深灰色细砂岩)、剪切角砾岩4种破坏类型,控制着瓦斯逸散、富集和煤与瓦斯区域突出危险性的分布。 

Gas geological property in Gaocheng coal mine gliding structural district in western Henan

Geological structure is the master control factor to influence coal and gas outburst.Gliding structures developed widely in western Henan coal field. The mechanism of gliding structure and its control on coal measures,coal seam and gas deposit are researched based on the theory of plate structure and the region tectonic evolvement,collation data systematically about coalfield geological prospecting and plenty of gas geological data that mine disclosed.Gaocheng coal mine located at the western Ludian gliding structure,which is influenced by gliding structural movements two times.The thickness of coal seam changed acutely and the structure coal developed by layer.The roof structure of coal seam can be divided into four failure types,including tensile breccia,fault gouge and breccia,original roof rock,and shear breccia,as well as the gas release and enrichment and the distribution of coal and gas outburst hazard region are controlled by gliding structure.