关键词: 模糊识别, 综合评价, 海相, 碳酸盐岩, 岩相

Abstract: On the basis of fuzzy comprehensive judge, a practical fuzzy technique is presented to identify marine carbonate facies in this paper. The grade of membership is determined by a method of rank in the dyadic contrast and quatitative technique.According to the rate of right judging for known samples, a method of determining the weight of factor is presented, and "product-sum" operator should be used instead of "min-max". In central Hubei, the Permian marine carbonatite can be devided into six facies.They are tidal flat, platform slope A, platform slope B, platform shoal, platform hollow and restricted platform hollow. The facies models are built by using 30 samples in the Songzi section. The selected factors are color,calcite,dolomite, quartz, clay minetal, paleontologic 1-5, siliceous nodal and tumrous body. The results of the fuzzy recognition in the Jinshan section show that the rate of right judging is about 80%, and the method is effective.