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Velocity field and outflow discharge behavior in overtopping dam-break of an iron mine tailings dam: a model test

文献类型：期刊论文

作者Ma, Changkun2,3; Guo, Xiaogang1,2; Yang, Chunhe1,2; Zhang, Chao1,2; Ma, Lei2,3; Li, Xueting2,3
刊名BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
出版日期2024-06-01
卷号83期号:6页码:14
关键词Tailings dam Dam-break flow Velocity-field Outflow discharge Non-intrusive measurement Model test
ISSN号1435-9529
DOI10.1007/s10064-024-03733-7
英文摘要Landslides in mining engineering mainly occur in tailings dams. The evolution of monitoring indexes is important for the improvement of warning accuracy in tailings dam breaks. The velocity field and outflow discharge behavior in overtopping dam-break of an iron mine tailings dam were studied. There were two stages of the tailings flow in the model test, corresponding to two types of flow state, granular flow and viscous flow, respectively. The absolute vorticity vertical line |w| vertical line was measured to reveal the influence of terrain on the velocity. An estimation equation for the maximum velocity was proposed, in which vorticity and the height difference of terrain were taken into account. The standard deviation of the velocity stack e\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\overline{e}$$\end{document} with minus on top was used to distinguish the dam-break flow into "collision" and "non-fluctuating" regions. The velocity profiles of the transversal section were concluded to be three patterns based on the positions of the peak velocities. The three patterns well described the velocity field at different flow states. Estimation equations were proposed for the transversal section velocity profile. Based on the velocity profile equations, the estimation method of the outflow discharge was developed. This study provides a reference for improving the accuracy of tailings dam break warnings by non-intrusive monitoring methods.
资助项目the National Natural Science Foundation of China[2021YFC3001303] ; National Key Research and Development Program of China[51809230] ; National Natural Science Foundation of China
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:001223656600002
出版者SPRINGER HEIDELBERG
源URL[http://119.78.100.198/handle/2S6PX9GI/41313]  
专题中科院武汉岩土力学所
通讯作者Zhang, Chao
作者单位1.Minist Emergency Management, Key Lab Slope Safety Risk Warning & Disaster Preve, Wuhan 430071, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Changkun,Guo, Xiaogang,Yang, Chunhe,et al. Velocity field and outflow discharge behavior in overtopping dam-break of an iron mine tailings dam: a model test[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2024,83(6):14.
APA Ma, Changkun,Guo, Xiaogang,Yang, Chunhe,Zhang, Chao,Ma, Lei,&Li, Xueting.(2024).Velocity field and outflow discharge behavior in overtopping dam-break of an iron mine tailings dam: a model test.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,83(6),14.
MLA Ma, Changkun,et al."Velocity field and outflow discharge behavior in overtopping dam-break of an iron mine tailings dam: a model test".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 83.6(2024):14.

入库方式： OAI收割

来源：武汉岩土力学研究所

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