陕北榆神矿区瓦斯特征及其控制因素

Gas Characteristics and Its Control Factors in North Shaanxi Yushen Mine

瓦斯是影响煤层开采的重要因素,而影响煤层瓦斯特征的因素有多种。对榆神矿区的瓦斯含量特征及影响因素分别进行测试和分析,结果表明,榆神矿区瓦斯含量低,远远低于1 m3/t,其主要成分N2、CH4及CO2较少,具有低瓦斯矿区的特征。同时,针对影响榆神矿区瓦斯含量的相关因素进行分析,表明其控制因素主要为煤变质作用和煤层埋藏深度,低煤变质阶段及浅煤层埋深大大限制了矿区内煤的生气及吸附能力。

Gas is the important factors affecting coal seam mining, there are many factors influencing the characteristics of coal seam gas. Characteristics of gas content and influencing factors in Yushen Mine were tested and analyzed, the result showed that Yushen Mine gas content was low, far less than 1 m^3 / t, the main ingredients of N2, CH4 and CO2 was less, had the characteristics of low gas mines. Meanwhile, relative factors influencing Yushen Mine gas content were analyzed, the result showed that its main control factor was coal metamorphism and buried depth of coal seam, low coal metamorphism stage and shallow coal seam buried depth restricted coal gas and adsorbability.