| 唐山矿瓦斯赋存的地质控制因素研究 |
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| 引用本文： | 王猛,朱炎铭,王怀勐,李伍.唐山矿瓦斯赋存的地质控制因素研究[J].中国煤炭,2012,38(3):38-41,48. |
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| 作者姓名： | 王猛 朱炎铭 王怀勐 李伍 |
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| 作者单位： | 1. 中国矿业大学资源与地球科学学院,江苏省徐州市,221116;煤层气资源与成藏过程教育部重点实验室,江苏省徐州市,221008
2. 中国矿业大学资源与地球科学学院,江苏省徐州市,221116 |
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| 基金项目： | 国家基础研究发展计划(973)项目(2009CB219605);江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 结合唐山矿的地质特征及瓦斯资料,研究了控制瓦斯赋存的主要地质因素,包括地质构造、煤层埋深、地下水活动及煤层顶板岩性等。结果表明:正断层有利于瓦斯逸散,逆断层有利于瓦斯的保存,尤其是推覆构造对瓦斯的赋存有重要的影响;随埋深增大,煤层瓦斯压力增大,煤可吸附更多瓦斯;煤层瓦斯含量与顶板砂泥岩比呈反比;地下水的封堵作用利于瓦斯的保存,使得开平向斜北西翼的唐山矿瓦斯含量较同深度的南东翼瓦斯含量高。
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| 关 键 词： | 唐山矿 瓦斯赋存 构造 埋深 地下水 顶板岩性 |
Study on geological controlling factors of gas occurrence in Tangshan Coal Mine |
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| Wang Meng
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Zhu Yanming
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Wang Huaimeng
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Li Wu.Study on geological controlling factors of gas occurrence in Tangshan Coal Mine[J].China Coal,2012,38(3):38-41,48. |
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| Authors: | Wang Meng Zhu Yanming Wang Huaimeng Li Wu |
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| Affiliation: | 1(1.School of Resources and Earth Science,China University of Mining and Technology, Xuzhou,Jiangsu 221116,China; 2.Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process of the Ministry of Education,Xuzhou,Jiangsu 221008,China) |
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| Abstract: | With the geological features and gas data,the paper has studied the major geological factors affecting gas occurrence which mainly include geological structure,buried depth of coal seam,groundwater activity,roof lithology of coal seam.The results show that normal fault is good to gas dissipation while reverse fault makes for gas preservation,and the nappe structure has great influence on gas occurrence;with the buried depth increasing,gas pressure in coal seam rises and coal will adsorb more gas;the gas content in coal seam is in inverse proportion to the sand-to-mud ratio in roof rock;groundwater plugging makes for gas preservation,as makes gas content in Tangshan mine in the north-west wing of Kaiping syncline is higher than south-east wing though they are in the same depth. |
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| Keywords: | Tangshan mine gas occurrence structure buried depth groundwater roof lithology |
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