模糊综合评判在铀矿成矿预测中的应用

本文介绍了模糊综合评判法在铀矿成矿预测中的应用。该法可定量地分析预测区的地质信息,综合多种成矿因素的作用,以达到分析预测区成矿远景的目的。其步骤是:将整个预测区划分为若干子区单元,作为评判对象;根据预测区的特殊性及地质成矿过程的一般性,确定出影响成矿的主要因素,组成评判因素集;计算每个子区单元在每个因素上对“成矿”的隶属度,确定评判矩阵;选用加权平均等3个评判函数,用二次评判的方法进行模糊综合评判,得到评判结果,最后对评判结果择优,划分出三级成矿远景区。

APPLICATION OF FUZZY SYNTHETICAL EVALUATION METHOD TO PREDICTION OF URANIUM POTENTIAL

This paper describes the fuzzy synthetical evaluation method applied to the prediction of uranium potential. This method can be used to quantitatively analyse geological information from predicted region and synthesize effects of various minerogenetic factors for the purpose of predicting minerogenetic region. The procedures are that the whole predicted region is divided into some sub-region units which are regarded as evaluation targets; based on the speciality of the area predicted and the generality of geological minerogenetic process, leading factors effecting on minerogenetic process are determined and evaluation factor sets are constituted; minerogenetic membership of each factor in each sub-region unit is calculated, and evaluation matrix is determined; Three evaluation functions such as weighted average etc. are selected and fuzzy synthetical evaluation is done bY means of two times evaluation, then evaluation result can be obtained; finallY, minerogenetic potential areas of three orders are divided by the optimum selection of evaluation results.