新兴煤矿68号煤层瓦斯地质图编制与煤层气资源评价  

Compilation of No.68 Coal Seam Gas-geologic Map in Xinxing Coal Mine and Coalbed Methane Recource Evaluation

作　　者：刘新蕾[1] 沈斌[1] 庞博 周瀚[1] 

机构地区：[1]黑龙江科技大学安全工程学院,黑龙江哈尔滨150022 [2]龙煤集团佳木斯瓦斯地质研究院有限公司,黑龙江佳木斯154002

出　　处：《煤》2017年第2期15-18,共4页Coal

基　　金：国家自然科学基金项目(51504088);瓦斯等烃气输运管网安全基础研究国家级专业中心实验室开放课题(HKDGH-20140003;20140008)

摘　　要：为指导新兴煤矿瓦斯灾害预测,有效开发利用煤层气资源,以现场瓦斯地质资料为基础,分析了地质构造、煤层埋深等因素对瓦斯赋存的影响规律,采用瓦斯地质统计法建立瓦斯涌出量、含量及压力的数学回归模型,以此编制了68号煤层瓦斯地质图,在此基础上对煤层气资源量进行了计算和评价。结果表明:68号煤层顶板的岩性为含凝灰砂岩,有利于煤层中瓦斯的保存;瓦斯含量、瓦斯涌出量、瓦斯压力与埋深成正比;暂定埋深441 m以下的范围为煤与瓦斯突出危险性区域,当前开采层已进入突出危险区域;煤层划分10个地质单元,计算资源量为96.09×106m3,平均资源量丰度为0.108×108m3/km2,属小型储量规模、低丰度类别,煤层气大部分在1 000 m埋深以内,为中部埋藏,不利于煤层气地面开发。In order to guide coal mine gas disaster forecast and effective utilization Coal bed methane（CBM） resources,the gas geological map of No. 68 coal seam in Xin-xing coal mine is compiled by analyzing the influence of geological structure,coal seam depth and other factors on gas occurrence and using gas Geological-statistical-prediction method to establish mathematical regression model of gas emission、gas content and gas pressure based on the field gas geological dataes. CBM resource quantity calculation and evaluation is done based on the map above. The results showed that the lithology of No. 68 coal seam roof is tuffaceous sandstone which facilitates the retention of the coal seam gas; the gas content,gas emission and gas pressure is significant positive correlation with buried depth; coal and gas outburst danger area is below 441 m depth range and the current mining layer has entered the danger zone; the coal seam is divided into ten geological units and the whole calculated in-place CBM resources and the average resource abundance are96. 09 × 106m3 and 0. 108 × 108 m3/km2 respectively,belongs to small reserves scale and low abundance; CBM is mostly buried in less than 1 000 m belongs to the intermediate level. The No. 68 coal seam is not favorable for CBM exploration and development in the ground.

关 键 词：瓦斯地质图 瓦斯地质规律 瓦斯突出危险性 煤层气资源评价 

分 类 号：TD712[矿业工程—矿井通风与安全]