相山铀矿田邹家山勘查区三维地质建模与定量预测

发布时间：2018-02-08 17:06

本文关键词： 相山矿田邹家山勘查区三维预测 SKUA 立方体模型　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：相山盆地是我国南方众多盆地中的一员,盆地成因类型属于火山岩型盆地,盆地中含有丰富的铀矿资源,为国内经济发展作出了重大贡献,邹家山勘查区拥有相山盆地中储量最大的铀矿床,自上世纪60年代以来,前人对邹家山地区铀矿资源进行了多次地质研究,多以二维地质调查为主。近年来,研究区浅部矿体被开发利用,深部找矿技术匮乏,矿山危机日趋严峻。作者从3S技术出发,基于SKUA平台,依托矿产勘查理论、矿床成因理论、矿产预测理论,结合勘查区大地构造背景及成矿地质条件,进一步结合数学地质统计学方法进行精细分析,从而达到对勘查区的深部及外围进行三维预测找矿的目的。研究中通过收集并进行整理勘查区的前人研究结果和数据,包括勘探线剖面图、钻孔资料、中段采掘工程平面图、综合地质图、电法勘探剖面、矿床蚀变信息、无人机航测遥感数据等,针对不同原始数据进行不同的处理,利用数字化工具(MapGIS、AutoCAD等)进行矢量化,进一步建立了铀矿地学信息数据库。研究中利用剖面图中剖面线框建模的方法流程,在SKUA建模软件平台上,结合已有数据中反映的地层、断裂、岩体等的产状和形态展布信息,建立了勘查区的三维模型。建模过程中结合研究区区域成矿地质背景、成矿地质规律以及物化探等探采信息,构建了勘查区的找矿数字模型,进一步利用“立方体模型”理论方法对勘查区成矿有利因子进行了定量的统计分析,进而建立了勘查区三维预测模型,在此基础上在勘查区圈定了成矿有利靶区,最后对勘查区的矿产资源量进行了初步厘定,并对研究结果进行概率性评价。通过建立邹家山铀矿勘查区的三维地质模型、钻探工程模型和矿体模型,为后期地质工作提供了精准、全面的三维数据,为矿山的开发生产提供了三维可视化数据;同时本次研究实现了勘查区的定位、定量、定概率三维成矿预测工作,进一步对研究区的深部成矿有利地段进行了分析,为后期进一步开展勘查区深部和外围找矿提供勘查建议。
[Abstract]:Xiangshan basin is a member of many basins in the south of China. The genetic type of the basin belongs to volcanic rock basin, which contains abundant uranium resources and has made a great contribution to the domestic economic development. The Zoujiashan exploration area has the largest uranium deposit in Xiangshan basin. Since -40s, many geological studies have been carried out on uranium resources in Zoujiashan area. The shallow ore bodies in the study area are exploited and utilized, the deep prospecting technology is scarce, and the mine crisis is becoming more and more serious. The author proceeds from the 3s technology, based on the SKUA platform, relies on the mineral exploration theory, the deposit genesis theory, and the mineral prediction theory. Combined with the geotectonic background and metallogenic geological conditions in the exploration area, the detailed analysis was further carried out with the mathematical geostatistics method. In the study, the previous research results and data of the exploration area are collected and collated, including the profile of the exploration line, the drilling data, the plan of the mining engineering in the middle section, and so on, in order to achieve the purpose of three dimensional prediction and prospecting in the deep and outer part of the exploration area, and through collecting and arranging the former research results and data of the exploration area, Comprehensive geological map, electric prospecting section, alteration information of ore deposit, remote sensing data of UAV aerial survey, etc., are vectorized by using digital tool, such as MapGIS-AutoCAD, to deal with different original data, etc. Furthermore, the uranium geological information database is established. In the study, the method flow of profile line frame modeling is used in the research, and on the platform of SKUA modeling software, the occurrence and form distribution information of strata, faults and rock mass, which are reflected in the existing data, are combined. The 3D model of the exploration area is established, and the prospecting digital model of the exploration area is constructed in the process of modeling, combining with the geological background, the regularity of metallogenic geology and the geophysical and geochemical exploration information of the study area. Furthermore, by using the theory and method of "cube model", a quantitative statistical analysis of metallogenic favorable factors in the exploration area is carried out, and a three-dimensional prediction model of the exploration area is established, and on this basis, the favorable metallogenic target area is delineated in the exploration area. Finally, the quantity of mineral resources in the exploration area is preliminarily determined, and the probabilistic evaluation of the research results is carried out. Through the establishment of three-dimensional geological model, drilling engineering model and orebody model of Zoujiashan uranium exploration area, It provides accurate and comprehensive 3D data for later geological work and 3D visual data for mine development and production. At the same time, this study realizes the positioning, quantitative and definite probability of 3D metallogenic prediction of exploration area. Further analysis is made on the favorable deep metallogenic areas in the study area, which provides exploration suggestions for the further exploration of the deep and peripheral ore deposits in the later stage of the exploration area.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P619.14

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