Rainfall threshold for initiation of channelized debris flows in a small catchment based on in-site measurement

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• 作者：Zhenlei Wei^a ; Yuequan Shang^a ; Yu Zhao^a ; ^{zhao_yu@zju.edu.cn} ; Pan Pan^a ; Yuanjun Jiang^b
• 关键词：Debris flow ; Small catchment ; Rainfall characteristics ; Runoff ; Prediction ; Rainfall threshold
• 刊名：Engineering Geology
• 出版年：2017
• 出版时间：30 January 2017
• 年：2017
• 卷：217
• 期：Complete
• 页码：23-34
• 全文大小：1727 K
• 卷排序：217

文摘

37 short–duration rainfall events were analyzed and compared with the runoff variation obtained from field measurement. The grey relational analysis was utilized to rank the influence of affecting factors on runoff variation. Three runoff prediction models using MLS, GABP and GASVM methods respectively were developed and compared. The debris flow hazard was assessed based on IDF curves and the predicted runoff. The proposed forecasting method for debris flow combined the empirical threshold with the physical process model.