模糊综合评判在地球化学异常评价中的应用  

THE APPLICATION OF FUZZY SYNTHETIC JUDGEMENT TO THE APPRAISAL OF GEOLOGICAL ANOMALIES

作　　者：张晓常 

机构地区：[1]云南省地质调查院第一矿产地质调查所,云南曲靖655000

出　　处：《物探与化探》2003年第2期106-109,共4页Geophysical and Geochemical Exploration

基　　金：国土资源大调查项目 ( 70 40 115 30 32 )

摘　　要：对云南省元江中上游 1∶5万土壤测量所圈定的 2 0个地球化学异常进行了模糊综合评判 ,其中甲类异常正确评判率为 10 0 % ,其它几个综合评判值较大的异常经查证均发现了不同规模的矿床 (点 ) ,为研究区异常的筛选和评价提供了一种较为可靠的方法。Fuzzy synthetic judgement was conducted for 20 geological anomalies delineated by 1∶50 000 soil survey in the middle and upper reaches of the Yuanjiang River, Yunnan Province. The correct evaluation rate is 100% for Rank-A anomalies. Besides, the inspection of some anomalies with relatively high synthetic evaluation values has led to the discovery of ore deposits (occurrences) of different sizes. It is shown that this method provides a relatively reliable technique for the sieving and appraisal of anomalies in the study area.

关 键 词：模糊综合评判 地球化学勘探 数学模型 矿床 

分 类 号：P632[天文地球—地质矿产勘探]