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杨庄煤矿在1994年以前为低瓦斯矿井,随着开采深度的增加,瓦斯涌出量呈现出增大的趋势。为了掌握控制煤层瓦斯涌出的主控因素,搞清深部瓦斯涌出规律,为今后矿井深部开采的安全性以及合理制定瓦斯治理措施提供一定的依据和参考。以杨庄煤矿5煤层为例,通过该煤层各主要工作面瓦斯涌出量数据的统计分析,确定了5煤层瓦斯风化带的下限标高;运用瓦斯地质理论,依据实际瓦斯涌出参数资料分别分析了煤层埋深、煤体变质程度、地质构造、岩浆岩的侵入对5煤层瓦斯涌出情况的影响。
The Yangzhuang coal mine was a low-gas mine before 1994. As the depth of mining increased, the gas emission increased. In order to master the main controlling factors of methane emission in coal seams and find out the law of deep gas emission, it will provide some basis and references for the future safety of deep mining and the rational development of gas control measures. Taking the No.5 coal seam of Yangzhuang Coal Mine as an example, the lower limit elevation of the gas weathering zone of No.5 coal seam was determined through the statistical analysis of the gas emission data from all the main coalfaces. Based on the gas geological theory and the actual gas emission parameter data, The influence of the buried depth of coal seam, the degree of coal metamorphism, the geological structure and the intrusion of magmatic rocks on the gas emission in No.5 coal seam is discussed.