水土保持通报2012，Vol.32Issue(3)：182-187,6.
黏性泥石流运动模型在蒋家沟的对比检验
Contrast Tests for Models on Viscous Debris Flow Using Observations from Jiangjiagou Watershed
摘要
Abstract
Four representative models on viscous debris flow are introduced,including Bagnold′s model,Takahashi′s model,Fei′s model and Iverson′s model.Contrast tests for the four models are made using the data observed from 23 debris-flow surges in Jiangjiagou,Dongchuan City,Yunnan Province.The mean value of velocities simulated by Bagnold′s model approximates to that of observations and however,simulated dispersion stress is not strong enough to sustain effective gravity of the solid phase.Simulated velocity by Takahashi′s model is less than observations.Hydraulic gradient can be simulated by Fei′s model,which is also less than observations.Primary analysis with Iverson′s model shows that the liquefaction degree computed by stress balance equation can be achieved in Jiangjiagou watershed.Analysis of the sensitivity of each model to some parameters indicates that Bagnold′s model and Takahashi′s model are sensitive to the maximum possible concentration,while Fei′s model and Iverson′s model are sensitive to the internal friction angle.关键词
黏性泥石流/模型/蒋家沟Key words
viscous debris flow/model/Jiangjiagou分类
天文与地球科学引用本文复制引用
杨红娟,韦方强,胡凯衡..黏性泥石流运动模型在蒋家沟的对比检验[J].水土保持通报,2012,32(3):182-187,6.基金项目
国家自然科学基金项目“泥石流流速垂向分布的观测实验研究” （）
中国科学院水利部成都山地灾害与环境研究所青年百人团队项目“考虑细观颗粒效应的泥石流动理学模型研究” （）
