煤体结构对矿井瓦斯灾害的影响研究

Study on Coal Pore Structure Affecting Gas Disaster

煤体结构的变化直接影响矿井瓦斯的赋存与运移规律,从而影响矿井瓦斯灾害的形式和灾害后果的严重程度．采用压汞法研究了韩城矿区煤体姑构,并结合三轴渗透仪测试了煤层瓦斯渗透率及瓦斯吸附实验结果,研究了煤体结构对韩城矿区瓦斯危险性和灾害形式的影响,得出韩城矿区北区和南区3#煤层的差异及北区3#与11#两个不同煤层结构不同,导致煤层瓦斯渗透率、瓦斯吸附能力不同,因而瓦斯涌出规律、瓦斯灾害形式不同,为该矿区矿井瓦斯灾害的防治提供理论依据．表7,参8．

Macro methods were adopted to observe the type of gas disasters, and coal capacity of permeability and isotherm on trial was measured.Combines with micro methods of SEM and pore structure analyzer to measure micro porosity structure of coal. Volume capacity and permeability of coal are analyzed quantitatively and qualitively. The measuring results can he used to analyze the cause of coalmine disasters and the relationships between coal pore structures and the types of gas disasters, which can be the bases for coalmine gas disaster prevention and coal gas utility. 7tabs., 8refs.