二道岭矿区煤层瓦斯赋存分布特征及其影响因素探讨 .pdfVIP

学兔兔 2012年第2期 煤 炭 工 程 二道岭矿区煤层瓦斯赋存分布特征 及其影响因素探讨 孙四清 (中煤科工集团西安研究院，陕西西安 710054) 摘 要：根据煤矿井下煤层瓦斯参数测定结果，分析了二道岭矿区内煤层瓦斯赋存分布特 征，矿区煤层瓦斯含量分布总体是中部高、两端低。矿区南部瓦斯含量为1．9～5．6m ／t，平均 为4．5m ／t；矿区中部瓦斯含量为7．5～20．9m ／t，平均为12．6m ／t；矿区北部瓦斯含量为3．0～ 12．4m。／t 平均为8．2m ／t。煤变质程度分布不均衡是形成矿区中部瓦斯含量高、两端低的物质 ， 基础条件，矿区中部煤层中发育的走向逆断层和二道岭向斜两端仰起是造成矿区煤层瓦斯赋存分 布不均衡的关键因素。 关键词：二道岭矿区；煤层瓦斯；走向逆断层；煤变质 中图分类号：TD712 ．3 文献标识码：B 文章编号：1671—0959(2012)02-0075-03 Discussion on Distribution Features and Influence Factors of Seam Gas Deposits in Erdaoling Mining Area SUN Si—qing (Xi an Research Institute，China Coal Technology and Engineering Group，Xi an 710054，China) Abstract：According to the results of the seam gas parameters measured in the underground mine，the distribution features of the seam gas deposits in Erdaoling Mining Area were analyzed．The seam gas content distribution in the mining area generally would be high in the middle and low in the two ends．The gas content in the south part of the mining area would be 1．9—5．6m ／t and the average gas content would be 4．5m ／t．The gas content in the middle part of the mining area would be 7．5～20．9m ／t and the average gas content would be 12．6m ／t．The gas content in the north part of the mining area would be 3．0～12．4m ／t and the average gas content would be 8．2m ／t．An unbalanced distribution of the coal metamorphism degree would be the material basic conditions to cause the high gas content in the middle part of the mining area and the low gas c