IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Alternative TitleAn Analysis of Heavy-rainfall-induced Debris Flows of Sichuan in 1981
Source Publication泥石流(2)
Editor中国科学院成都地理研究所 编辑
Publication Place重庆
Keyword暴雨泥石流 分布 特征 成因 四川
AbstractFrom June to September of 1981, the heavy rainfall repeatedly fell in the vast moutainous regions of Sichuan prov., thus causing the debris flows. Such extensive distributions, high frequency, large scales and serious damages of debris flows are exceptional in history. They affected fifty counties in Sichuan prov. There are 1060 debris flow gullies in total, in which the debris flow of Lizhiyida Gully in Ganlo lasted about an hour. Its max. velocity was 10m/s and the discharge was up to 2000 m^3/s. The soild materials which were brought out total up a few 100 thousand cubic metres. The railway bridge was destroyed and the train was overlurned, and so trffic was held up for half of a mounth. The losses were over ten million yuan. The debris flows of 1981 in Sichuan were caused by the heavy rainfall. In case of strong folds, developing rifts (especially the mobile rifts (especially the mobile rifts), active earthquakes, slacking rock and abundant losse materials, in the mountainous region with high peaks and deep valleys, steep slopes and torrents, and less vegetations, the debris flows would occur while the rainfall was 500 mm/day or 100 mm/10 min. The debris flows densely distributed in the centre of heavy rainfall area.
Other Abstract1981年四川大部分地区连降暴雨,不仅形成特大洪灾,而且造成了解放以来少有的暴雨泥石流灾害,使国家和人民蒙受了巨大的损失。本文讨论1981年四川暴雨泥石流的分布、特征及成因。
Document Type专著章节文集论文
Recommended Citation
GB/T 7714
唐邦兴. 四川暴雨泥石流分析. 泥石流(2). 重庆:科学技术文献出版社重庆分社,1983:9-13.
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