IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleStudy on the critical hydraulic condition of debris flow in scoured channel
王涛1,2; 陈宁生1,2; 邓明枫1,2; 李俊1,2,3
Corresponding Author王涛
Source Publication泥沙研究
Other Abstract



Debris flow due to channel-bed failure is one of main types of debris flow. Study on critical condition for initiation of debris flow is very important for prevention and early-warning of debris flows. Analysis based on bed load transport theory and debris flow experimental results shows that solid transportation concentration increases with the increase of dimensionless bed shear stress with a power function between solid transportation concentration and dimensionless bed shear stress. Quantitative standard is adopted to describe the initiation of debris flow. Quantitative standard is adopted to describe the initiation of debris flow in this paper, and the critical condition for initiation of debris flow due to channel-bed failure is a special case of the formula
which is established to predict the solid transportation concentration. Results show that imitation of debris flow requires heightened dimensionless bed shear stress. Analysis of performance and applicability based on 10 sets of flume experiment data and 1 set of field data in Jiangjia Gully indicates that the model in this paper can be
used to estimate the critical condition for initiation of debris flow.

Keyword泥石流形成 临界水利条件 体积输沙浓度 无量纲切应力
Subject AreaP642.23
Indexed ByCSCD ; 北大中文核心
Funding Organization国家自然科学基金项目( 51409243、41661134012)
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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
王涛,陈宁生,邓明枫,等. 洪水侵蚀沟床形成泥石流的临界水力条件研究[J]. 泥沙研究,2018,43(1):38-43.
APA 王涛,陈宁生,邓明枫,&李俊.(2018).洪水侵蚀沟床形成泥石流的临界水力条件研究.泥沙研究,43(1),38-43.
MLA 王涛,et al."洪水侵蚀沟床形成泥石流的临界水力条件研究".泥沙研究 43.1(2018):38-43.
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