基于距离场的三维矿体模型与地表化探数据的关联关系分析——以红透山铜矿田为例

发布时间：2018-03-22 22:16

本文选题：加权最短距离场　切入点：三维　出处：《地质论评》2017年02期 　论文类型：期刊论文

【摘要】：针对成矿定量预测强调三维空间信息的综合研究的特殊需求,以及定性与定量、二维与三维数据综合分析难等关键问题,本文提出了一种基于三维非均质空间的加权最短距离场算法,既可反映断层破碎带在成矿元素运移过程中的通道作用,亦可回溯出目标体元到源体元的最短路径。应用该方法开展了对红透山铜矿区的三维矿体模型在地表的距离场值与土壤地球化学测量数据的关联关系分析,发现已知和预测矿体共同的距离场与化探异常有更高的匹配性,间接证明了预测矿体的可靠性。该方法一定程度上解释了由矿体导致的地表化探异常,可以为化探、遥感等地表数据与三维地质数据模型进行综合分析及关联关系的提取提供借鉴。
[Abstract]:In view of the special needs of the comprehensive study of three-dimensional spatial information in metallogenic quantitative prediction, as well as the key problems such as qualitative and quantitative analysis, and the difficulty of comprehensive analysis of two-dimensional and three-dimensional data, etc. In this paper, a weighted shortest distance field algorithm based on three-dimensional heterogeneous space is proposed, which can reflect the channel action of fault fracture zone in the process of migration of ore-forming elements. The shortest path from the target element to the source element can also be traced back. Using this method, the correlation between the distance field value of the 3D orebody model in Hongtoushan copper ore area and the geochemistry data of soil is analyzed. It is found that the common distance field of known and predicted orebodies has a higher matching with geochemical anomalies, which indirectly proves the reliability of the prediction of orebodies. This method can explain the surface geochemical anomalies caused by orebodies to some extent and can be used as geochemical prospecting. Remote sensing and other surface data and three-dimensional geological data model for comprehensive analysis and the extraction of correlation relationship to provide reference.
【作者单位】：中南大学有色金属成矿预测与地质环境监测教育部重点实验室地球科学与信息物理学院;中国地质大学地质过程与矿产资源国家重点实验室;美国犹他大学地质与地球物理系;
【基金】：国家自然科学基金资助项目(编号:41302259和41472302) “十一五”国家科技支撑计划课题(编号:2008BAB34B02)的成果~~
【分类号】：P618.41;P632

【相似文献】