神府矿区5^(-2)煤层富油煤赋存特征及资源潜力评价  

Occurrence characteristics and resource potential evaluation of tar-rich coal for No.5^(-2) coal seam in Shenfu Mining Area

作　　者：李华兵 姚征 李宁 高骏 谢青 王强 LI Huabing;YAO Zheng;LI Ning;GAO Jun;XIE Qing;WANG Qiang(Shaanxi Institute of Geological Survey,Xi’an 710054,China;Shaanxi Mineral Resources and Geological Survey,Xi’an 710068,China)

机构地区：[1]陕西省地质调查院,陕西西安710054 [2]陕西省矿产地质调查中心,陕西西安710068

出　　处：《煤田地质与勘探》2021年第3期26-32,41,共8页Coal Geology & Exploration

基　　金：陕西省公益性地质调查项目(20180304)。

摘　　要：随着煤炭清洁高效利用的推广以及黄河流域中段高质量发展的需求,榆林地区煤炭产业转型升级势在必行,而富油煤开发正是转型发展的重要方向之一。基于大量钻孔数据,结合井下实地采样化验结果及区域地质资料,详细分析神府矿区5^(-2)煤层的焦油产率特征和富油煤的赋存特征。采用层次分析法,将资源赋存、煤层赋存、开发技术和社会环境效益4个因素作为主要指标,并细分10个评价参数,建立富油煤资源潜力评价体系。结果表明:神府矿区5^(-2)煤层焦油产率平均值为9.81%,富油煤整体上发育良好;富油煤赋存特征主要为焦油产率高、整体发育稳定、局部存在差异性、面积广、潜力巨大等;研究区富油煤资源开发潜力平均综合得分77.34分,属于资源富集有利区;划分出2个资源有利区,面积约为700 km^(2),煤层厚度均大于5 m,焦油产率大于9%,富油煤储量超过2000 Mt,主要包括红柳林井田、柠条塔井田、张家峁井田、大柳塔井田、大海则井田、石窑店井田、青龙寺井田,为下一步富油煤勘探开发指明了方向。With the promotion of clean and efficient utilization of coal and the demand for high-quality development in the middle section of the Yellow River,the transformation and upgrading of coal industry is imperative in Yulin,and the exploitation of tar-rich coal one of the important directions.By organizing and making use of mass drill data,and in combination with the minefield underground spot sampling and regional geology,tar-yield characteristics and tar-rich coal occurrence features of tar-rich coal in No.5^(-2)coal seam in Shenfu Mining Area are analyzed in detail.Based on analytic hierarchy process,this paper takes resource allocation,coal bed occurrence,development technology as well as social and environmental benefits as main indicators,subdivides 10 evaluation parameters,and establishes a tar-rich coal resource potential evaluation system.The results show that the average tar yield is 9.81%,and the tar-rich coal is generally well developed.The occurrence characteristics of tar-rich coal includes high tar yield,stable development,local variability,wide area and great potential.The average comprehensive score of the development potential is 77.34 in the research region,which is a resource-rich favorable area.Two fav-orable resource areas are divided,with an area of about 700 km^(2),the coal seam thickness more than 5 m,the tar yield greater than 9%,and the reserves greater than 2000 Mt,including Hongliulin minefield,Ningtiaota minefield,Zhangjiamao minefield,Daliuta minefield,Dahaize minefield,Shiyaodian minefield,and Qinglongsi minefield,which presents directions for the future tar-rich coal exploration and development.

关 键 词：神府矿区 侏罗系延安组 富油煤 赋存特征 资源潜力 

分 类 号：P618.11[天文地球—矿床学]