收稿日期: 2015-05-25
修回日期: 2016-04-05
网络出版日期: 2016-09-15
基金资助
国家自然科学基金面上项目（41372331）和科技部国际科技合作专项（2013DFA21720）资助
Egg white experimental study on reduction of resistance of residual layer of debris flow
Received date: 2015-05-25
Revised date: 2016-04-05
Online published: 2016-09-15
宇岩 , 王钧 , 乔成 , 潘华利 . 黏性泥石流残留层减阻机理的蛋清试验[J]. 中国科学院大学学报, 2016 , 33(5) : 651 -655 . DOI: 10.7523/j.issn.2095-6134.2016.05.011
Roughness is an important design parameter of debris flow control engineering and it directly affects the resistance strength of the residual layer. To study the residual layer drag reduction mechanism, we simulated viscous residual layer by performing 40 groups of egg white tests. The glass ball motion on the viscous residual layer was observed and the relationship between resistance reduction of the viscous residual layer and roughness was studied. On the basis of the experimental data, the relationships of roughness with residual layer thickness, density, and slope gradient were analyzed, and the conclusions are given as follows. Roughness is proportional to the residual layer thickness and density and it is inversely proportional to the slope gradient. These results provide a theoretical basis for the future design of debris flow control project.
Key words： roughness; residual layer; egg white; debris flow
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