地震危险区划工作是地震工作的一项重要任务,但是地震危险区划工作本身往往具有一定的模糊性。本文正是基于地震危险区划工作的这种特点,用模糊聚类的方法,对四川地区地震危险区作出一定的估计,取得了一些初步的结果。一、模糊聚类的基本思想及方法所谓模糊聚类,就是把所给定的对象在某种意义下分成相似的族, Earthquake risk zoning work is an important task of seismic work, but the seismic hazard zoning itself tends to have some ambiguity. Based on this feature of seismic hazard zoning work, this paper makes a certain estimation of the seismic danger zone in Sichuan by means of fuzzy clustering and obtains some preliminary results. First, the basic idea of ​​fuzzy clustering and methods The so-called fuzzy clustering, is to give a given object in a sense, divided into similar families,