黏性泥石流运动模型在蒋家沟的对比检验

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	黏性泥石流运动模型在蒋家沟的对比检验
	胡凯衡; 韦方强; 杨红娟
刊名	水土保持通报
	2012-06
卷号	32 期号:3 页码:182-187
关键词	黏性泥石流模型蒋家沟
其他题名	Contrast Tests for Models on Viscous Debris Flow Using Observations from Jiangjiagou Watershed
通讯作者	杨红娟
中文摘要	介绍了Bagnold模型、Takahashi模型、费祥俊模型、Iverson模型4个代表性黏性泥石流运动的模型,并利用云南省东川市蒋家沟的23阵泥石流测量资料对其进行对比检验。结果表明,Bagnold模型模拟的流速值总体上与测量值接近,但是弥散应力无法支撑固相有效重力;Takahashi模型模拟的流速值总体偏小;费祥俊模型模拟的水力坡降和断面平均流速均偏小;对Iverson模型的初步分析表明,蒋家沟泥石流具备维持受力平衡所需液化度的条件。参数敏感性分析表明,极限浓度对Bagnold模型和Takahashi模型影响较大,内摩擦角对费祥俊模型和Iverson模型影响较大。
英文摘要	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.
分类号	P642.23
收录类别	CSCD
资助信息	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”(40771026);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”(SDSQB-2010-01)
语种	中文
CSCD记录号	CSCD:4571553
公开日期	2012-12-13
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/4518]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
推荐引用方式 GB/T 7714	胡凯衡,韦方强,杨红娟. 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.
APA	胡凯衡,韦方强,&杨红娟.(2012).黏性泥石流运动模型在蒋家沟的对比检验.水土保持通报,32(3),182-187.
MLA	胡凯衡,et al."黏性泥石流运动模型在蒋家沟的对比检验".水土保持通报 32.3(2012):182-187.