基于数字模型的居隆庵铀矿床三维成矿预测  

3D Metallogenic Prediction of Julong'an Uranium Deposit Based on Digital Model

作　　者：曹珂[1] 朱鹏飞[1] 王文杰[2] 刘琳莹 白芸[1] 孔维豪[1] 李晓翠[1] 孙璐 何紫兰 CAO Ke;ZHU Pengfei;WANG Wenjie;LIU Linying;BAI Yun;KONG Weihao;LI Xiaocui;SUN Lu;HE Zilan(Beijing Research Institute of Uranium Geology,Beijing 100029,China;China University of Geosciences,Beijing 100083,China)

机构地区：[1]核工业北京地质研究院,北京100029 [2]中国地质大学(北京),北京100083

出　　处：《铀矿地质》2022年第2期269-282,共14页Uranium Geology

基　　金：科技部深地资源勘查开采专项“华南热液型铀矿基地深部探测技术示范”(编号:2017YFC0602600)资助。

摘　　要：文章基于三维地质建模与地学统计分析相关理论,在江西相山铀矿田主要矿床成矿地质背景、矿床地质特征及成矿规律的研究认识基础上,运用地质建模软件SKUA-GOCAD,建立了居隆庵铀矿床的地形地貌、构造、地层和矿体三维数字模型,并开展了成矿有利信息定量提取分析。运用三维证据权法和三维信息量法对居隆庵铀矿床开展了“定位-定量-定概率”的隐伏矿体三维定量预测研究工作。通过对矿床定量预测获得了成矿高值区,圈定了5个靶区(3个A级靶区和2个B级靶区),并开展了资源量估算,计算出总资源量为10983 t。预测结果表明居隆庵矿床找矿潜力巨大,研究成果为该矿区的后续矿产勘查工作提供了重要参考依据,同时也为相山盆地铀矿床的勘探开发提供了技术支持和找矿思路。Based on the three-dimensional geological modeling and geological statistical analysis theories,and studies on the ore-forming geological background,characteristics and metallogenic regularity of the main deposits in Xiangshan uranium ore field, Jiangxi Province, a three-dimensional digital deposit model of Julong’an uranium deposit was established by using SKUA-GOCAD 3D modeling software. The topographic and geomorphic surface model,tectonic-stratigraphic solid model and ore body model were established on the first, and then the favorable information for mineralization of stratigraphic zones, interfacial interfaces,steepening locations between interfacial interfaces, rock mass zones, structural zones and alteration zones were extracted separately in this task. Finally, the three-dimensional prospecting prediction of deposit location,quantitative and fixed probability was carried out using the three-dimensional evidence method and three-dimensional information method. In the prediction of the Julong’an deposit, 5 target sectors(3 A-level and 2 B-level) were delineated,with a total resource amount estimated to 10983 tons. The prediction results showed that there are huge prospecting potential in Julong ’ an uranium deposit, which will provide an important reference for the subsequent exploration, and the research provide technical support and prospecting ideas for the uranium exploration and development in Xiangshan basin.

关 键 词：三维建模 成矿预测 三维定量预测 居隆庵 铀矿床 相山 

分 类 号：P628.1[天文地球—地质矿产勘探] P619.14[天文地球—地质学]