本文基于文献[1]四川地区初选窗口的工作,对所选持续型、突发型、信号型三类前兆小震活动窗口或敏感部位,重新确定了异常幅度控制线和时段划分标准以及窗内小震活动与大震的相互对应率。文中对单个和多个窗口预测某区地震的效能作了新的估计。 Based on the work of the primary election window in Sichuan Province [1] in this paper, this paper re-determines the criteria for the control line of anomaly amplitude and the period division according to the active window or sensitive part of the selected three types of precursory small earthquakes, ie, sustained, sudden and signal type. The interaction between small earthquakes and large earthquakes corresponds to each other. In this paper, we make a new estimation of the effectiveness of single and multiple windows in predicting the earthquake in a certain area.