The Optimal Cross-section Design of the “Trapezoid-V” Shaped Drainage Canal of Viscous Debris Flow  

作　　者：YOU Yong 

机构地区：[1]Key Laboratory of Mountain Hazards and Earth Surface Process, Chinese Academy of Sciences, Chengdu 610041, China [2]Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China

出　　处：《Journal of Mountain Science》2011年第1期103-107,共5页山地科学学报（英文）

基　　金：supported by the National Science and Technology Supporting Plan (Grant No. 2009BAK56B05);Key Project of Chinese National Programs for Fundamental Research and Development (973 Program) (Grant No. 2008CB425803)

摘　　要：Debris flow drainage canal is one of the most widely used engineering measures to prevent and manage debris flow hazards.The shape and the sizes of the cross-section are important parameters when design debris flow drainage canal.Therefore,how to design the appropriate shape and sizes of the cross-section so that the drainage canal can have the optimal drainage capacity is very important and few researched at home and abroad.This study was conducted to analyze the hydraulic condition of a Trapezoid-V shaped drainage canal and optimize its cross-section.By assuming characteristic sizes of the cross-section,the paper deduced the configuration parameter of the cross-section of a Trapezoid-V shaped debris flow drainage canal.By theory analysis,it indicates that the optimal configuration parameter is only related to the side slope coefficient and the bottom transverse slope coefficient.For this study,the Heishui Gully,a first-order tributary of the lower Jinsha River,was used as an example to design the optimal cross-section of the drainage canal of debris flow.

关 键 词：Optimal cross-section design Trapezoid- V shaped Drainage canal Viscous debris flow 

分 类 号：TV133[水利工程—水力学及河流动力学] P642.23[天文地球—工程地质学]