改进经验赋值法在航空物探铀成矿预测中的应用  

Application of Improved Empirical Weight Assignment in Uranium Metallogenic Prediction of Airborne Geophysical Prospecting

作　　者：牛家骥[1,2,3] 张翔 韩鹏辉[1,2,3] 石连成 NIU Jiaji;ZHANG Xiang;HAN Penghui;SHI Liancheng(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang,Hebei 050002,China;Key Laboratory of Uranium Resources Geophysical Exploration Technology,China Nuclear Industry Group Company,Shijiazhuang,Hebei 050002,China;Hebei Key Laboratory of Airborne Survey and Remote Sensing Technology,China Nuclear Industry Group Company,Shijiazhuang,Hebei 050002,China)

机构地区：[1]核工业航测遥感中心,河北石家庄050002 [2]中核集团铀资源地球物理勘查技术中心(重点实验室),河北石家庄050002 [3]河北省航空探测与遥感技术重点实验室,河北石家庄050002

出　　处：《铀矿地质》2024年第4期785-791,共7页Uranium Geology

基　　金：中国核工业地质局“内蒙古二连浩特地区1∶5万航空物探调查”项目(编号:201811-1);中国地质调查局“内蒙古满都拉-苏尼特右旗地区1∶5万航空物探(磁、放)调查”项目(编号:DD2016006659)联合资助。

摘　　要：基于GIS的多元信息成矿预测方法可以利用数据信息,圈定不同级别的成矿远景区,已经在航空物探铀矿勘查工作中得到了广泛应用。铀成矿有利信息权重赋值主要采用经验赋值法,存在主观性强、缺乏分析利用数据特征的问题,文章通过引入CRITIC(Criteria Importance Though Intercrieria Correlation)权重法对传统的经验赋值法进行约束,建立了改进经验赋值法,并以二连盆地赛汉高毕地区的铀成矿预测为例,通过预测结果与已知钻孔、矿体等铀矿信息的比较,确定了改进经验赋值法最终圈定的成矿有利区带与客观事实吻合。结果表明,通过CRITIC权重法约束的改进经验赋值法可以同时利用数据本身信息和预测专家的经验,在铀成矿有利信息的权重赋值方面有着更好的效果,圈定的铀成矿有利区带更加准确,值得在其他区域开展进一步应用。The GIS-based multi-information metallogenic prediction method can utilize data information to delineate different levels of metallogenic prospective areas,which has been widely used in the exploration of uranium deposits by air geophysical survey.The weight assignment of favorable information for uranium metallogenesis mainly adopts the empirical assignment method,which has the problems of strong subjectivity and lack of analysis and utilization of data characteristics.In this paper,the improved empirical assignment method is established by introducing the CRITIC(Criteria Importance Though Intercrieria Correlation)weight method to constrain the traditional empirical assignment method,and taking the uranium metallogenic prediction in Saihangaobi area of Erlian Basin as an example,the comparison between the prediction results and the known drilling holes,ore bodies and other uranium ore information shows that the final metallogenic favorable areas delineated by the improved empirical assignment method are more consistent with the objective facts.The results show that the improved empirical assignment method constrained by the CRITIC weight method can simultaneously utilize the data itself and the experience of prediction experts,and has a better effect on the weight assignment of favorable information for uranium metallogenesis.The delineated uranium metallogenic favorable areas are more accurate,and it is worth further application in other regions.

关 键 词：航空物探 铀成矿预测 CRITIC权重法 改进经验赋值法 赛汉高毕地区 

分 类 号：P631[天文地球—地质矿产勘探]