| A Preliminary Study on 1D Numerical Experiment of Water Debris Flow in Gully |
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| 引用本文： | LIU Tonghuan~1 WANG Xiekang~1 CUI Peng~2 (1.State Key Lab.of Hydraulics and Mountain River Eng.,Sichuan Univ.,Chengdu 610065,China, 2.Inst.of Mountain Hazards and Environment,Chinese Academy of Sci.,Chengdu 610041,China). A Preliminary Study on 1D Numerical Experiment of Water Debris Flow in Gully[J]. 四川大学学报(工程科学版), 2005, 0(Z1) |
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| 作者姓名： | LIU Tonghuan~1 WANG Xiekang~1 CUI Peng~2 (1.State Key Lab.of Hydraulics and Mountain River Eng. Sichuan Univ. Chengdu 610065 China 2.Inst.of Mountain Hazards and Environment Chinese Academy of Sci. Chengdu 610041 China) |
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| 作者单位： | 1.State Key Lab.of Hydraulics and Mountain River Eng.，Sichuan Univ.，Chengdu 610065，China; 2.Inst.of Mountain Hazards and Environment，Chinese Academy of Sci.，Chengdu 610041，China |
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| 基金项目： | Supported by National Scientific Foundation of China(Study on of Basis Theory and Prediction of Debris Flow,40025103) |
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| 摘 要： | In order to improve and enhance the numerical modeling methods and its application on debris flow problems,a preliminary study has been proposed in accordance with the corrected water-sediment numerical model on the premise of revised resistance and sediment capacity equations.Firstly,an overview the recent re- search achievements on numerical simulation of debris flow has been conducted,the results shown that a gener- al numerical model for debris flow can not be existed at all because the complex rheological behavior and main evolution processes from initiation,movement to deposition with different physical mechanism.Secondly,as- suming the one-dimensional Saint-Venant equation for the approximation of water debris flow movement in the gully based on the Manning's equation for the friction slope of water debris flow,the conservation equations of mass and momentum have been solved by means of centre-difference in distance longitudinal axis of the gully and weighted coefficient in time field,the distribution of depth,velocity and scoured or deposition in each sec- tion have been obtained using a suitable sediment transport rate.The aim in this work is focus on improvement of water-sediment model to adapt debris flow numerical simulation although this result need further to analyze and discuss as far as the reliability and precision were concerned because this model proposed must have e- nough the field observational or experimental data to verify related model parameter.
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A Preliminary Study on 1D Numerical Experiment of Water Debris Flow in Gully |
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| LIU Tonghuan WANG Xiekang CUI Peng. A Preliminary Study on 1D Numerical Experiment of Water Debris Flow in Gully[J]. Journal of Sichuan University (Engineering Science Edition), 2005, 0(Z1) |
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| Authors: | LIU Tonghuan WANG Xiekang CUI Peng |
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| Affiliation: | LIU Tonghuan~1 WANG Xiekang~1 CUI Peng~2 |
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| Abstract: | In order to improve and enhance the numerical modeling methods and its application on debris flow problems,a preliminary study has been proposed in accordance with the corrected water-sediment numerical model on the premise of revised resistance and sediment capacity equations.Firstly,an overview the recent re- search achievements on numerical simulation of debris flow has been conducted,the results shown that a gener- al numerical model for debris flow can not be existed at all because the complex rheol... |
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| Keywords: | Water debris flow Saint-Venant equation Numerical experiment |
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