IMHE OpenIR  > 山地灾害与地表过程重点实验室
泥浆对黏性碎屑流坡面运移过程的影响
Alternative TitleInfluence of Mud on Migration Process of Viscous Debris Flow
季宪军1; 梁瑛1; 潘华利2; 欧国强2
Corresponding Author欧国强
2017
Source Publication水土保持通报
ISSN1000-288X
Volume37Issue:1Pages:88-92
Other Abstract

[目的]分析泥浆对黏性碎屑流坡面运动形态、横向宽度、纵向运动距离及运动速度影响,为此类灾害防治提供参考。[方法]制作黏性碎屑流实验模型,将不同含水率成都黏土泥浆与粗颗粒混合,制备黏性碎屑流试样,开展系列黏性碎屑流物理模型试验。[结果]随泥浆密度增大,粗颗粒间粘连作用增强,其运动形态由无黏碎屑流向黏性碎屑流再到整体块状运动形态转变;坡面横向宽度、纵向运移距离和速度随泥浆密度增加而减小;不同密度泥浆组成黏性碎屑流运动过程具有分类现象:密度低于1.413g/cm3时,速度随时间增长快,变化梯度较稳定;密度大于1.413g/cm3时,运动速度变化过程可分为2个阶段:前期速度随时间增长慢,变化梯度较小;后期速度随时间增长快,且较前阶段变化梯度有所增大,各高密度泥浆情况趋于一致。[结论]泥浆影响黏性碎屑流运移形态和运动过程。 
 

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[Objective]The aim of the study is to analyze the influence of mud on the moving ways,width and longitudinal distance and velocity of viscous debris flow on slope,and help to provide the references for disaster prevention.[Methods]The experimental model was built for viscous debris flow,and a series of model experiments were carried out through the device.The viscous debris flow composed of Chengdu clay mud and coarse particles.[Results]The adhesion force between the coarse particles increased,and the movement patterns changed from the inviscid debris flow to the viscous debris flow,and to the massive sliding with increasing mud density.The width and distance on slope decreased with increasing mud density.The migration process could be differentiated according to mud density.The velocity increases rapidly and the gradient is large when mud density was lower than 1.413g/cm~3.The migration process can be divided into two stages when mud density was higher than 1.413g/cm~3,the velocity increased slowly and the gradient changes little in the first stage but the velocity increased quickly,and the gradient changed quickly in the second stage. [Conclusion]The mud affects the movement pattern and the moving process of viscous debris flow.

Keyword黏性碎屑流 运动形态 模型试验 泥浆
Subject AreaTu43 ; P642.2
DOI10.13961/j.cnki.stbctb.2017.01.016
Indexed ByCSCD
Language中文
CSCD IDCSCD:5969920
Funding Organization国家自然科学基金面上项目“黏性碎屑流坡面运移动力过程研究”(41672357) ; 国家自然科学资助项目(41372331) ; 国家国际科技合作专项项目(2013DFA21720) ; 河南省科技公关项目(162102310253) ; 河南省高等学校重点科研项目(15A410005)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18812
Collection山地灾害与地表过程重点实验室
Affiliation1.南阳理工学院
2.中国科学院成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
季宪军,梁瑛,潘华利,等. 泥浆对黏性碎屑流坡面运移过程的影响[J]. 水土保持通报,2017,37(1):88-92.
APA 季宪军,梁瑛,潘华利,&欧国强.(2017).泥浆对黏性碎屑流坡面运移过程的影响.水土保持通报,37(1),88-92.
MLA 季宪军,et al."泥浆对黏性碎屑流坡面运移过程的影响".水土保持通报 37.1(2017):88-92.
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