模糊意见集中决策在水系沉积物测量异常排序中的应用

The application of centralized decision method of the fuzzy opinion in anomaly ranking of stream sediment survey

传统的地球化学异常评序方法,通常依据化探异常的"高、大、全",但实践证明,没有结合成矿地质条件进行排序的异常,不能更好地反映出成矿远景的大小,也就不能更好地进行异常查证工作。为此,这里把异常规模、元素组合特征以及成矿地质条件作为评价异常最重要的三个参数,使用模糊意见集中决策对研究区的异常作出排序。经野外异常查证工作证实,该方法能更好地指导异常查证工作。

The traditional methods of geochemical anomaly ranking are usually based on anomaly parameters,but it is proved that potential areas can＇t be expressed actually and anomaly inspection can＇t be arranged reasonably without combination of ore-forming geological conditions.We put anomaly dimension,element combination characteristic,ore-forming geological condi-tions as the three most important parameters of anomaly evaluation,and make anomaly ranking with centralized decision meth-od of the fuzzy opinion.Field anomaly inspection work confirmed this method.