煤田勘查资料在双龙地区砂岩型铀矿调查选区中的应用  

Application of Coalfield Exploration Data on Sandstone Type U-ore Survey Area Optimization in Shuanglong Area

作　　者：王军礼 曹惠锋 刘厚宁 Wang Junli;Cao Huifeng;Liu Houning(Geological Survey Institute Co.Ltd.,Sino Shaanxi Nuclear Industry Group,Xi＇ an,Shaanxi 710000)

机构地区：[1]中陕核工业集团地质调查院有限公司,西安710000

出　　处：《中国煤炭地质》2018年第8期79-85,共7页Coal Geology of China

基　　金：中国地质调查局天津地质调查中心(12120114063401)

摘　　要：煤、砂岩型铀矿均赋存在中新生代沉积盆地中,它们赋存层位在空间上一般具有上下叠置的关系。鄂尔多斯盆地南部双龙地区以往施工了大量煤炭钻孔,获得了丰富地质编录资料和自然伽马资料,为砂岩铀矿调查选区奠定了基础。通过双龙地区铀资源调查选区工作,认为煤田勘查资料在砂岩型铀矿调查选区中发挥三个方面的作用:即自然伽马异常筛查;地层格架建立和铀储层沉积体系划分;氧化还原过渡带初步圈定。对煤田孔发现的伽马异常进行铀探验证,二者在地层、岩性和自然伽马异常形态等方面完全吻合,表明煤炭钻孔自然伽马可以作为该区圈定放射性异常的依据,可见煤田资料的二次开发利用对含煤盆地铀矿的勘查具有重要价值。The sandstone type U-ores are all hosted in Mesozoic and Cenozoic sedimentary basins. Their hosting horizons generally have superimposed relationship. In the Shuanglong area,southern Ordos Basin previously drilled abundant coal boreholes and acquired plentiful geological logged data and natural gamma data,thus the basis of sandstone type U-ore survey. Through the U-ore resource survey area optimization in the area,considered that the coal exploration data can play important role on three aspects,thus the natural gamma anomalies screening; stratigraphic framework establishment,U-ore reservoir sedimentary system partition; and redox transition zone preliminary delineation. The U-ore drilling verification for coal drilling found gamma anomalies has shown that the strata,lithology and gamma anomalies are coincided,thus the coal boreholes natural gamma data can be radioactive anomaly delineation basis. The secondary development and utilization of coalfield data have great value in coal-bearing basin U-ore exploration.

关 键 词：煤田勘查资料 砂岩型铀矿 自然伽马 含煤盆地 铀矿调查 

分 类 号：P631.8[天文地球—地质矿产勘探] P619.14[天文地球—地质学]