潞安矿区高河井田煤层气地面抽采有利区段评价

Evaluation of favorable blocks for surface drainage of CBM in Gaohe coal mine,Lu′an coalfield

煤层气地面抽采技术是解决高瓦斯矿井安全生产的重要手段之一,正逐渐被煤炭企业所重视和采用。以潞安矿区高河井田为例,在缺乏煤层气勘探资料的情况下,运用现代煤层气地质理论,重新解读煤田地质勘探成果,挖潜出有利区段评价的关键性地质资料——煤体结构;并结合煤炭开采规划,对其井田构造、煤体结构、含气量、煤层埋深和厚度等地质条件进行了单项评价和区段综合评价。结果显示,高河井田西北区段为煤层气地面抽采的有利区段,建议作为煤炭规划区的首期煤层气地面抽采区。

CBM surface drainage, providing a new thinking and method for control of methane, has aroused atten- tion of mine corporations and has been gradually applied. In the early days, coal exploration had little information of CBM, so did Gaohe coal mine. As a result, based on the new CBM exploration principle, the author reinterpreted results of coal exploration to dig the information of coal body structure, one of the most important factors infiu- encinge valuation of favorable blocks for surface drainage of CBM. Through evaluating coalfield structure, coal body structure, methane content, coal seam depth and thickness one by one, combining with coal exploitation plan and comprehensive evaluation, the author thought that the northeast block was the best one for CBM surface drainage, and suggested to exploit firstly that part in Gaohe coal mine. This paper can be used for reference in evaluation of drainage conditions and block optimization.