IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleExperimental study on failure process of lateral bank deposition debris flow gully with different conditions of compactness
詹美强1,2,3; 葛永刚1,2; 郭晓军1,2; 严华1,2,3; 杜宇琛1,2,3
Source Publication自然灾害学报
Contribution Rank1
Other AbstractLoose deposits on both sides of channel are important sources of debris flow,and their deformation instability under rainstorm and flood determines the formation process of debris to a certain extent. Moreover, the stability and destruction process of deposits with different densities will be different. In this paper,the failure process of deposits on both sides of ditch bank was studied by indoor model test,and the difference of failure process of deposits under different densities was discussed. Four groups of flume experiments were designed to simulate the deformation and failure process of different compacted deposits. The results show that the failure of side-shore deposits can be divided into three stages as a whole,foot erosion stage,frequent collapse and sliding stage and gradual stabilization stage. On the experimental scale,the main failure mode of loose deposits under side erosion of water flow is local sliding instability,the compact deposits are prone to large-scale collapse failure after forming an empty surface, which is shown as gravity type. Frequent instability process of deposits is not a one-time overall destruction,but a gradual process,which is intermittent in time,discrete in space,rising and falling in scale. The interval of soil failure is short for relatively loose deposits,but the average and overall scale is small. However,the compact deposits are opposite with a long time interval and large scale,which reflects the difference of failure process for different compacted soils. This study is intended to provide a reference for the study of formation mode and process of debris in mountain basins.
Keyword侧岸堆积体 水槽实验 破坏过程 密实度
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author葛永刚
Affiliation1.中国科学院水利部成都山地灾害与环境研究所, 四川 成都 610041;
2.中国科学院山地灾害与地表过程重点实验室, 四川 成都 610041;
3.中国科学院大学, 北京 100049
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
詹美强,葛永刚,郭晓军,等. 不同密实度条件下泥石流沟侧岸堆积体破坏过程研究[J]. 自然灾害学报,2019,28(5):143-151.
APA 詹美强,葛永刚,郭晓军,严华,&杜宇琛.(2019).不同密实度条件下泥石流沟侧岸堆积体破坏过程研究.自然灾害学报,28(5),143-151.
MLA 詹美强,et al."不同密实度条件下泥石流沟侧岸堆积体破坏过程研究".自然灾害学报 28.5(2019):143-151.
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