| 山西柳林鼻状构造曲率特征及其与煤层气的关系 |
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| 引用本文： | 袁鼎,单业化.山西柳林鼻状构造曲率特征及其与煤层气的关系[J].中国煤田地质,1999,11(2):28-31. |
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| 作者姓名： | 袁鼎 单业化 |
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| 作者单位： | 中国地质大学!北京100083 |
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| 基金项目： | “八五”国家重点科技攻关项目!“华北某些煤田煤层气地质特征和选区评价研究” |
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| 摘 要： | 山西西部柳林鼻状构造处于鄂尔多斯盆地东缘的河东煤田中段,是我国煤层气勘探的重要选区之一。该构造范围内,主要发育两组正交裂缝,一组大致平行地层走向,另一组大致平行地层倾向,相对于地层产状,裂缝系的这一特征保持不变,说明裂缝与鼻状构造同期形成,并受其控制。主曲率分析表明,在矶口东部、孟门东北部和庙湾矿等处具有相对高值,除庙湾矿一带受小窑破坏外,其余两处是今后煤层气勘探的最佳场所。地下裂缝为煤层气贮存提供部分空间,主要为其产出、运移提供有效通道,因此开展裂缝研究对我国煤层气选区、勘探和开发是极其重要的。
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| 关 键 词： | 天然裂缝 主曲率分析 煤层气 鼻状构造 柳林 |
Curvature Features of Liulin Nose Structure of Shanxi Province and the Relationship with Coal Bed Gas |
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| Yuan Ding Shan Yehua.Curvature Features of Liulin Nose Structure of Shanxi Province and the Relationship with Coal Bed Gas[J].Coal Geology of China,1999,11(2):28-31. |
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| Authors: | Yuan Ding Shan Yehua |
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| Abstract: | Liulin nose structure located in the central Hedong coal field,eastern Ordos Basin,Western shanxi province,is one of the most important regions chosen for exploration of coalbed gas.There exist two main crossed fracture systems in the region and approximately parallel to bed strike and dip.The invariability of orthogonal fracture systems relative to bed occurrence suggests that these fractures might be associated with the Liulin Nose Structure.The result of curvature analysis reveals that the curvature reaches relatively high in the east of Sanjiao,northeast of Menmen and Miaowang,which except the last spoiled by local excavation are the best spots for exploration.Natural fracture can provide room for accumulation of coalbed gas,and tunnel for its migration.So studies of fracture is the key to successful exploration and development of coalbed gas in the region. |
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| Keywords: | natural fracture curvature analysis coalbed gas Liulin nose structure |
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