关键词: 堰塞坝, 稳定性快速评价方法, 地貌学指标, 综合准确率； 白格堰塞湖； 加拉堰塞湖

Abstract: The barrier dams triggered by rainfall and earthquakes have the characteristics of short lifespan and widespread damage to human society. Therefore, great attentions have paid to the stability of barrier dams by the academic and engineering sectors. Up to now, a series of the rapid evaluation methods based on geomorphological indexes for barrier dams’ stability have been proposed at home and abroad. In order to compare the advantages and disadvantages of various evaluation methods, according to the collected 421 barrier dam cases that have measured data around the world, the comparison study is conducted. Herein, four indicators, the false rate (F), absolute accuracy rate (R), conservative accuracy rate (Rc), and comprehensive accuracy rate (Rr) are adopted for rapid evaluation method comparison of barrier dam’s stability. Based on the calculated results, the conclusions can be drawn that, the accuracy rate of DBI and Ls(AHV) methods are higher than the others, moreover, the input parameters of the two methods are easy to obtain and have better adaptability and reliability. However, the stability of barrier dams are influenced by many factors, the limitations of most proposed rapid evaluation methods lied on that they only focused on the geomorphological indexes, such as dam configuration, catchment area, dam volume, and so on. In the future research, in addition to geomorphological indexes, more attention should be paid on the obtainment of the following parameters, for instance, material feature and hydrodynamics indexes of barrier dam and lake, etc. In this way, the rationality of rapid evaluation method can be further enhanced.

Key words: barrier dams, rapid evaluation method of stability, geomorphological index, comprehensive accuracy rate, Baige barrier lake；Jiala barrier lake