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| Analysis of influencing factors of coal seam gas occurrence in Lingshi mining area |
| Chen Fengjie, Zhao Qingzhen, Zhang Rui |
| Department of Geological and Surveying Engineering， Shanxi Institute of Energy， Jinzhong 030600， China |
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Abstract Taking the main coal seam of Lingshi mining area in Shanxi Province as the research object, the occurrence of coal seam gas and its influencing factors were analyzed. The results showed that the average gas content of the main coal seam in Lingshi mining area was 2.48 m3/t, and the average methane concentration was 29.41 %. The gas content and methane concentration were low, and the study area was a poor gas area. The degree of coalification of the coal seam was medium, the macerals were mainly vitrinite, and the gas generation was limited. The relatively dense roof and floor were conducive to the preservation of coal seam gas; burial depth was one of the main controlling factors of gas occurrence in No.10 coal seam, and gas content was positively correlated with burial depth. The tectonic uplift after the hydrocarbon generation period and the development of tensile faults had caused a large amount of coal seam gas to escape in the study area, which was the main reason for the poor gas in the study area.
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| 1 ] 马鹏程. 霍西煤田灵石矿区石炭—二叠纪主采煤层煤岩学及地球化学特征[ D ]. 太原：太原理工大学，2016.
[ 2 ] 饶德庆. 灵石县矿山地质环境评价研究[ D ]. 西安：西安科技大学，2010.
[ 3 ] 周永昌，杨义军. 山西地质灾害-晋中卷[ M ]. 太原：山西科学技术出版社，2010.
[ 4 ] 李增学. 煤地质学[ M ]. 北京：地质出版社，2009.
[ 5 ] 魏若飞. 阳泉矿区东北部3~#煤层瓦斯地质特征研究[ D ]. 河南：河南理工大学，2012.
[ 6 ] 白俊萍. 霍西煤田襄汾矿区南部煤层贫气成因分析[ J ]. 中国煤炭地质，2016，28（ 7 ）：20 - 25.
[ 7 ] 蔺亚兵. 黄陇煤田低阶煤层气控藏要素与高产地质模式[ D ]. 徐州：中国矿业大学，2021.
[ 8 ] 王 猛，王继尧，赵新卓，等. 煤岩物性及地质因素对嘉乐泉煤矿8号煤层瓦斯的耦合控制[ J ]. 煤炭科技，2022，43（ 4 ）：70 - 76.
[ 9 ] 郑启孝. 山西永聚煤矿煤层特征对瓦斯的控制作用[ J ]. 科学技术与工程，2020，20（ 24 ）：9 830 - 9 834. |
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