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现代矿业 ›› 2018, Vol. 34 ›› Issue (09): 65-69.

• 地质·测量 • 上一篇    下一篇

贵州省织金县中寨井田煤层气分布特征及资源潜力

何金坪,汪小勇,骈红野   

  1. 贵州省地质矿产勘查开发局一〇五地质大队
  • 出版日期:2018-09-25 发布日期:2018-10-16

Distribution Characteristics and Resources Potential of CBM of Zhongzhai Minefield in Zhijin County,Guizhou Province

He Jinping,Wang Xiaoyong,Pian Hongye   

  1. 105 Geology Team,Bureau of Geology and Mineral Exploration and Development of Guizhou Province
  • Online:2018-09-25 Published:2018-10-16

摘要: 贵州省织金县中寨井田煤炭资源丰富,为进一步分析该井田煤层气分布特征并对资源潜力进行评价,讨论了井田煤层气的分布规律以及赋存特征,并采用体积法估算了煤层气资源量。结果表明:井田东北部露头甲烷含量最低,井田中深部及三塘铺向斜轴部甲烷含量较高;煤层气含量的主要影响因素为煤层厚度、煤层埋藏深度、围岩封闭性、地质构造等;井田内煤层气资源量预测为24.90×108 m3;三塘向斜为煤层气勘查的有利靶区,向斜轴部比翼部更有利于煤层气富集。

关键词: 煤层气, 分布特征, 赋存规律, 向斜, 资源潜力

Abstract: The Zhongzhai Minefield in Zhijin County in Guizhou Province is rich for CBM (Coalbed methane),in order to analyze the distribution characteristics and resources potential of the CBM in the minefield,the distribution regularity and occurrence characteristics of the CBM in the minefield are discussed,and the amount of the CBM resources is estimated by volumetric method.The study results show that methane content is the lowest in the northeastern field of outcrop,and higher in the medium-deep of the minefield and Santang Syncline axis;geological structure,coal thickness,roof lithology,seam outcrop and buried depth are the main factors which affect methane content;the estimation results of CBM resource reserve is 52.77×108 m3 in the minefield;Santang Syncline is the favorable prospecting target area of CBM,enrichment degree of CBM in the central of syncline is higher than the wings of syncline.

Key words: CBM,Distribution characteristics, Occurrence regularity, Syncline, Resources potential