IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleExperiment on Random Law of Slope Soil Movement in the Source Area of Debris Flow
郭晓军1,2; 李泳1; 崔鹏1
Corresponding Author李泳
Source Publication吉林大学学报(地球科学版)
Other Abstract



The runoff yield and slope failures are the source of debris flows in watersheds. The previous study focuses on the deterministic mechanism formation of slope failures for debris flow initiation and hydrological processes for debris flow runoff calculation. This paper aims to reveal and discuss the randomness process of slope failures. Artificial rainfall experiment was conducted on selected typical debris flow source region to observe the movement features of slope runoff and soil body. Results showed that slope failure and runoff formation are two separated processes. Runoff generation was continuous, evenly and stably distributed on slope. Slope failure presented a sequence of soil body collapse with the features of intermittence in time, aggregation in space, and remarkable fluctuation in magnitude. Slope failures time interval fit the Poisson distribution and its magnitude fit the power-law. The soil and water supplies were unsynchronized, the debris flow initiation depend not only on the flood generation, but also on the spatiotemporal characteristics of the slope failure processes, which leads to high variety and fluctuation of debris flows even under the same rainfall condition. This study contributes the debris flow formation and runoff calculation by taking debris flow formation as a randomness and discontinuous process and revealing the spatial characteristics of slope failures.

Keyword泥石流源地 土体活动 产流 泥石流阵流
Subject AreaP642.23
Indexed ByCSCD ; 北大中文核心
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
郭晓军,李泳,崔鹏. 泥石流源地坡面土体活动随机性规律实验[J]. 吉林大学学报(地球科学版),2014,44(4):1260-1268.
APA 郭晓军,李泳,&崔鹏.(2014).泥石流源地坡面土体活动随机性规律实验.吉林大学学报(地球科学版),44(4),1260-1268.
MLA 郭晓军,et al."泥石流源地坡面土体活动随机性规律实验".吉林大学学报(地球科学版) 44.4(2014):1260-1268.
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