摘要
以瓦斯地质理论为基础,结合济三煤矿地质特征以及瓦斯基础测试参数,对该矿3下煤层瓦斯地质规律进行了分析研究。结果表明,影响3下煤层瓦斯赋存的因素主要包括煤系地层的暴露程度、构造、顶底板岩性特征、煤层厚度以及煤层埋深等。其中,埋深以及煤厚与煤层瓦斯含量呈正相关关系;区内大断层多为开放性断层,不利于瓦斯的积聚,但小断层容易与煤层顶板泥岩共同作用对瓦斯起到封堵作用。
Based on the theory of gas geology and combining with the geological characteristics and basic gas parameters measured at Jisan Colliery,this paper studied the law of gas geology in low-part of Seam No.3 of the colliery.The results indicated that the factors influencing the gas occurrence mainly included the exposed degree and structures of the coal measure strata,the lithology of roof and floor,and the thickness and occurrence depth of coal seams,etc.,among them,the gas-bearing capacity of the coal seam was positively correlated with occurrence depth and thickness of seams;the most of the big faults in this areaare open faults and are unfavorable to the accumulation of gas,but small faults easily seal the gas by cooperating with the muddy roof.
出处
《山东科技大学学报（自然科学版）》
CAS
2010年第5期58-62,共5页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家重点基础研究发展计划("973"计划)项目(2003CB214608)
关键词
瓦斯地质
低瓦斯矿井
瓦斯含量
地质构造
gas geology
low-gas colliery
gas-bearing capacity
geological structure
