Fuzzy集理论是近十几年发展起来的一个数学分支,人们称它为模糊数学。它用与经典数学不同的逻辑基础研究和处理客观世界存在的模糊现象。Fuzzy集理论已在一些领域,特别是在有些过去被认为是“数学禁区”的领域,得到了应用。在地质勘探工作中,遇到大量复杂的现象。由于客观因素变化复杂,又由于人们对客观事物考察手段的限制,不可能对复杂现象有清晰的了解。有时,一些复杂现象也没有必要做清晰的了解。这样,人们对复杂现象的认识就具有一定的模糊性,出现了模糊 Fuzzy set theory is a mathematical branch developed in recent ten years, people call it fuzzy mathematics. It uses the different logic of classical mathematics to study and deal with the obscurity of the objective world. Fuzzy set theory has been applied in some fields, especially in some areas that have been considered as “math restricted area” in the past. In the geological exploration work, a large number of complex phenomena encountered. Due to the complex changes in objective factors, but also because of the limitations of objective means of investigation, it is impossible to have a clear understanding of complex phenomena. Sometimes complex phenomena do not need to be clearly understood. In this way, people’s understanding of complex phenomena has a certain degree of ambiguity, fuzzy