IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleDisaster Characteristics and Development Trend of Guanba River Debris Flow in the North Shore of Qionghai Lake,Sichuan
魏学利1; 陈宁生2; 李宾1; 赵怀义1
Corresponding Author魏学利
Source Publication山地学报
Other Abstract



Guanba River is the largest debris flow gully around Qionghai Lake basin,and recently floods and debris flows occurred frequently which caused severe sediment deposition disaster in Qionghai Lake.Based on survey of hundred year debris flow occurred in July 6,1998,the debris flow movement process was analyzed in the Guanba River.The effect of debris flow on sediment deposition of Qionghai Lake was discussed,and the main influencing factors and development trend of debris flows were revealed.The results showed that different kinds of source materials are supplied in abundant,and the occurrence frequency of debris flows were often high with great scale.Due
to longer gully and larger gradient along the channel,debris flow velocity and discharge usually changed greatly,and the transformation process of flow regime was complicated. The influence of floods and debris flows on sediment deposition of Qionghai Lake was very serious,and a large number of sediments was not only accumulated on the river estuary,but also transported into central lake.The coupling of frequent earthquakes,heavy rainfall and unreasonable human activities triggered debris flows,and it was forecasted that the probability of debris flow initiation will significantly increase in Guanba River. The results can provide reference foundation for river planning management and engineering treatment,and contribute to alleviate sediment deposition disasters of Qionghai Lake.

Keyword官坝河 邛海 山洪泥石流 泥沙淤积 影响因素 发展趋势
Subject AreaP642.23
Indexed ByCSCD ; 北大中文核心
Funding Organization国家自然科学青年基金(41602331) ; 中国博士后科学基金(2016M602951XB) ; 中国沙漠气象科学研究基金
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Document Type期刊论文
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GB/T 7714
魏学利,陈宁生,李宾,等. 邛海北岸官坝河山洪泥石流灾害特征及发展趋势[J]. 山地学报,2017,35(3):346-356.
APA 魏学利,陈宁生,李宾,&赵怀义.(2017).邛海北岸官坝河山洪泥石流灾害特征及发展趋势.山地学报,35(3),346-356.
MLA 魏学利,et al."邛海北岸官坝河山洪泥石流灾害特征及发展趋势".山地学报 35.3(2017):346-356.
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