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Alternative TitleExperimental Study of the Initiation of Debris Flow in Beichuan, Sichuan Province
叶天立1; 鲁晓兵1; 崔鹏2; 胡凯衡2; 张旭辉1
Corresponding Author叶天立
Source Publication山地学报
Contribution Rank2
Other AbstractA large amount of loose accumulatation, which can serve as the potential source of debris flow, is formed during the May 12th earthquake in 2008 in Wuchuan, Sichuan province. So it is important to investigate the initation mechanism of debris flow in this area. Experiments are carried out to study the initiation of debris flow using the in-site soils in Weijia gully in Beichuan county. The effects of slope angle, rain strength, rain duration and grain series on the initiation of debris flow are investigated. Meanwhile the initiation of silty fine sand is experimentally investigated and the results are compared with that of Beichuan soils. It is shown that the in-site soils in Beichuan which is with broadly distributed grain series is easier to intiate than the fine sand which is consisted with relatively narrow distributed grain series. There exists a rain duration corresponding to each rain strength for different soil types and slopes. There exists a critical rain duration, less than which will there be no debris flow occurring no matter how large the rain strength is. There exists a critical rain strength, less than which there be no debris flow occurring no matter how long the rain duration is. These result can serve as references for the forecast of debris flow in this area.
Keyword泥石流起动 人工降雨 雨强 雨时
Indexed By其他
Document Type期刊论文
Corresponding Author叶天立
Recommended Citation
GB/T 7714
叶天立,鲁晓兵,崔鹏,等. 北川地震区泥石流起动条件试验研究[J]. 山地学报,2011,29(S):22-27.
APA 叶天立,鲁晓兵,崔鹏,胡凯衡,&张旭辉.(2011).北川地震区泥石流起动条件试验研究.山地学报,29(S),22-27.
MLA 叶天立,et al."北川地震区泥石流起动条件试验研究".山地学报 29.S(2011):22-27.
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