三维空间下的证据权建模方法与资源预测应用  

Modeling method of weights of evidence in three-dimensional space and its application to resource prediction

作　　者：潘诗辰 毛先成[1,2] 

机构地区：[1]中南大学有色金属成矿预测教育部重点实验室,湖南长沙410083 [2]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《地质学刊》2015年第3期373-382,共10页Journal of Geology

基　　金：国家自然科学基金项目(41472301;41172297);国家"十二五"科技支撑计划项目(2011BAB04B10)

摘　　要：为了探索证据权法在三维空间下成矿预测的实际应用,在传统证据权的基础上,探讨了适用于三维空间下成矿预测的证据权建模思路和方法。并以Visual Studio 2010为开发平台,在Access 2003中建立多元地学空间数据库,开发可进行证据因子选择、因子权重计算及后验概率计算的证据权软件Wof E3DSys,其输出结果可在Voxler中进行三维可视化呈现。经分析,Wof E3DSys计算结果与Arc-Wof E输出结果在异常圈定方面基本一致,验证了Wof E3DSys的准确性。最后,以招平断裂带大尹格庄金矿为实例,选取成矿信息作为证据图层,进行成矿预测。该研究是对三维空间下证据权法的一次探索,为将来该证据权法在其他矿区的成矿预测提供了现实依据。This study discussed the modeling idea and methods suitable for mineral potential prediction in 3D space based on the common weights of evidence modeling,in order to study the practical metallogenic prognosis application of weights of evidence in 3D space.In addition,this study established a multi-geological spatial database in Access 2003 with the Visual Studio 2010 as the develop platform,and then used the software Wof E3 DSys,which can select the factors and calculate the weights and posterior probability.The output of this software can realize 3D visualization visible in Voxler.The result calculated by Wof E3 DSys reconciled with the output of Arc-Wof E in the context of anomaly delineation,which proves the accuracy of Wof E3 DSys.Finally,taken the Dayin＇gezhuang gold deposit as example,this study selected ore-controlling factors as evidence layers to do metallogenic prognosis.This research can be regarded as an exploration of weight of evidence modeling in 3-dimensional space,which has provided practical evidence for metallogenic prediction in other mining areas.

关 键 词：三维建模 证据权法 后验概率 成矿预测 山东 

分 类 号：P628[天文地球—地质矿产勘探]