IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleExperimental study of dam-break of earthquake barrier lake with different cross sections of drainage channel
赵万玉1,2; 陈晓清1; 高全1,2; 贾世涛3
Source Publication泥沙研究
Contribution Rank1
Other AbstractDam-break of barrier-lakes is not only one of the key problems of barrier lake research but also an important topic of engineering research.Based on the Tangjiashan barrier lake induced by the Wenchuan earthquake,an indoor model test for barrier lake,with a scale of 1:250,was carried out,which included some dam-bursting tests without any artificial measures and others with different types of artificial cross-sections of the drainage channel,such as trapezoidal,triangle and compound section.After analyzing the results of the test,the characteristics of volumetric water content of the dam body,erosional features of drainage channels and the variation of bursting discharge,some conclusions are drawn as follows:(1)The dam-break pattern was primarily downward erosion in the early time and lateral erosion in the later time and the strongest intensity of headwater erosion occurred during natural dam-break test,followed by artificial dam-break tests with compound section,triangular section or trapezoidal section,respectively;(2)The discharge of artificial dam-break tests with longer duration was far smaller than natural dam-break test,the peak discharge of the former decreased by 7.7%~20.1%,indicating that the drainage channel was a good method of controlling water level in front of dam and feasible to reduce the risk of dam-break.(3)If a higher growth rate of discharge or a shorter time reaching peak discharge was taken as the standard of high drainage efficiency in the early time of dam-break,the drainage efficiency of triangular section,compound section,and trapezoidal section reduced sequentially.In terms of the experience of handling Tangjiashan barrier lake,a compound section channel is better than others
Keyword地震堰塞湖 泄流槽 下切侵蚀 侧蚀 溯源侵蚀
Indexed ByCSCD
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Cited Times:8[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author陈晓清
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
赵万玉,陈晓清,高全,等. 不同横断面泄流槽的地震堰塞湖溃决实验研究[J]. 泥沙研究,2011,7(3):29-37.
APA 赵万玉,陈晓清,高全,&贾世涛.(2011).不同横断面泄流槽的地震堰塞湖溃决实验研究.泥沙研究,7(3),29-37.
MLA 赵万玉,et al."不同横断面泄流槽的地震堰塞湖溃决实验研究".泥沙研究 7.3(2011):29-37.
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