IMHE OpenIR  > 山地灾害与地表过程重点实验室
不同密实条件的滑坡堰塞坝漫顶溃决实验
Alternative TitleExperimental investigation on overtopping failure of landslide dams with different conditions of compactness
赵高文1,2; 姜元俊1; 乔建平1; 孟华君3; 杨宗佶1
Corresponding Author赵高文
2018
Source Publication岩石力学与工程学报
ISSN1000-6915
Volume37Issue:6Pages:1496-1505
SubtypeArticle
Contribution Rank1
Abstract为研究密实条件对堰塞坝漫顶侵蚀机制的影响,采用室内水槽实验对松散和密实2种状态下的滑坡堰塞坝漫顶溢流破坏过程进行了模拟。结果表明,密实条件对漫顶侵蚀过程有重要影响:松散状态下,堰塞坝的侵蚀过程主要包括面冲刷-冲沟-下蚀-侧蚀等阶段,溯源侵蚀效果不明显,溃决尾声阶段出现沙垄,溃口流量上涨和消退速度快,峰值流量和总输沙量均大于密实状态并且溃口的横向扩展模式为溃口边坡的剪切滑动;密实状态下,堰塞坝会出现陡坎、冲蚀坑等侵蚀过程,溯源侵蚀效果明显,陡坎效应导致溃口水流由非堰流形式宽顶堰流实用堰流转化,多级陡坎合并后,溃口水流在陡坎底部产生反向旋流,加速坝体的破坏,溃口横向扩展模式为边坡土体的重力崩塌。
Other AbstractTwo types of indoor flume experiments on the breaching process of the dams in loose and dense conditions respectively were carried out to study the influence of compactness on the mechanism of overtopping erosion of landslide dams.The experimental results show that the compactness has a significant effect on the process of overtopping erosion of landslide dams.Under the loose condition,the dam body suffers mainly from surface erosion,gully erosion,lateral erosion and undercut erosion,while the effect of headward erosion is very limited.The breach flow rate rises and drops fast and the dunes are formed when the dam-breaching is close to completion.The breach side is mainly subjected to shear failure in such a situation.Under the dense condition,multiple over falls and scour pit are formed and the effect of headward erosion is obvious.With the development of headcut erosion,the breach flow transforms from the non-weir flow to broad weir flow and then to practical weir flow.When the multiple over falls merged into a single upstream migrating head cut,the reverse swirling flow is formed which accelerates the failure of dam body.The breach side is mainly subjected to gravitational collapse under such a condition.
Keyword边坡工程 滑坡 堰塞坝 泥石流 漫顶侵蚀
DOI10.13722/j.cnki.jrme.2017.1610
Indexed ByEI ; CSCD
Language中文
CSCD IDCSCD:6261822
EI Accession NumberAccession number:20183605772022
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23777
Collection山地灾害与地表过程重点实验室
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.中国科学院大学,北京 100049;
3.中国地质科学院地质力学研究所 国土资源部新构造运动与地质灾害重点实验室,北京 100081
First 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
赵高文,姜元俊,乔建平,等. 不同密实条件的滑坡堰塞坝漫顶溃决实验[J]. 岩石力学与工程学报,2018,37(6):1496-1505.
APA 赵高文,姜元俊,乔建平,孟华君,&杨宗佶.(2018).不同密实条件的滑坡堰塞坝漫顶溃决实验.岩石力学与工程学报,37(6),1496-1505.
MLA 赵高文,et al."不同密实条件的滑坡堰塞坝漫顶溃决实验".岩石力学与工程学报 37.6(2018):1496-1505.
Files in This Item:
File Name/Size DocType Version Access License
不同密实条件的滑坡堰塞坝漫顶溃决实验_赵(2264KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[赵高文]'s Articles
[姜元俊]'s Articles
[乔建平]'s Articles
Baidu academic
Similar articles in Baidu academic
[赵高文]'s Articles
[姜元俊]'s Articles
[乔建平]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[赵高文]'s Articles
[姜元俊]'s Articles
[乔建平]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 不同密实条件的滑坡堰塞坝漫顶溃决实验_赵高文.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.