Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy Rainfall
AbstractUnusual rainfall is the primary cause of the failure of the tailing dams, and overtopping is the most representative model of the tailing dam failure. The upstream tailing dam was selected as the research object to study the whole process of breach extension and the overtoppi...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
GeoScienceWorld
2022-11-01
|
| Series: | Lithosphere |
| Online Access: | https://pubs.geoscienceworld.org/lithosphere/article/2022/Special%2010/5922501/618819/Experimental-Study-on-Failure-Model-of-Tailing-Dam |
| _version_ | 1828115780299915264 |
|---|---|
| author | Guangjin Wang Bing Zhao Rong Lan Dianwen Liu Bisheng Wu Yaoji Li Quanming Li Hanmin Zhou Mingsheng Liu Wenlian Liu Xinjie Liu |
| author_facet | Guangjin Wang Bing Zhao Rong Lan Dianwen Liu Bisheng Wu Yaoji Li Quanming Li Hanmin Zhou Mingsheng Liu Wenlian Liu Xinjie Liu |
| author_sort | Guangjin Wang |
| collection | DOAJ |
| description |
AbstractUnusual rainfall is the primary cause of the failure of the tailing dams, and overtopping is the most representative model of the tailing dam failure. The upstream tailing dam was selected as the research object to study the whole process of breach extension and the overtopping dam-failure mechanism under the full-scale rainfall condition. The results showed that the significant size grading phenomenon in the front, middle, and end of the tailing pond was obvious due to the flow separation effect, and its average particle diameter was D50. At different moments of rainfall, the height of the infiltration line at different positions of the dam body was different; at the rainfall of 3600 s, the height of the infiltration line lagged behind the height of the tailing pond, and this phenomenon from the tail of pond to the outside of the dam slope became more obvious. After the rainfall of 3600 s, the height of the infiltration line lagging behind the water level in the pond basically disappeared, and the rate of infiltration line rise kept pace with the rate of water level. The process of overtopping dam-failure experienced dam overtopping (gully erosion), formation of a multistepped small “scarp,” breach rapid expansion, formation of large “scarp,” and burst (fan-shaped formation). The width and depth of the breach showed a positive correlation, and the widening rate of the breach was 3 to 8 times of the deepening rate, especially in the middle of the dam break, widening behavior occupied the dominant factor. The shape of the dam body after failure was parabolic, and the dam body had obvious elevation changes. These results provide the theoretical guidance and engineering application value for improving the theory and early warning model of the upstream tailing dam. |
| first_indexed | 2024-04-11T12:45:48Z |
| format | Article |
| id | doaj.art-eed88e8e43fe44bab4e4517a71f630e7 |
| institution | Directory Open Access Journal |
| issn | 1941-8264 1947-4253 |
| language | English |
| last_indexed | 2024-04-11T12:45:48Z |
| publishDate | 2022-11-01 |
| publisher | GeoScienceWorld |
| record_format | Article |
| series | Lithosphere |
| spelling | doaj.art-eed88e8e43fe44bab4e4517a71f630e72022-12-22T04:23:21ZengGeoScienceWorldLithosphere1941-82641947-42532022-11-012022Special 1010.2113/2022/5922501Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy RainfallGuangjin Wang0http://orcid.org/0000-0002-7345-8368Bing Zhao1http://orcid.org/0000-0002-3646-7484Rong Lan2Dianwen Liu3Bisheng Wu4Yaoji Li5Quanming Li6Hanmin Zhou7Mingsheng Liu8Wenlian Liu9Xinjie Liu10http://orcid.org/0000-0001-5751-86341 Faculty of Land Resources Engineering Kunming University of Science and Technology Kunming 650093 China kmust.edu.cn1 Faculty of Land Resources Engineering Kunming University of Science and Technology Kunming 650093 China kmust.edu.cn5 Kunming Engineering & Research Institute of Nonferrous Metallurgy Co. Ltd. Kunming 650051 China1 Faculty of Land Resources Engineering Kunming University of Science and Technology Kunming 650093 China kmust.edu.cn4 State Key Laboratory of Hydroscience and Engineering Department of Hydraulic Engineering Tsinghua University Beijing 100084 China tsinghua.edu.cn6 Yunnan Phosphate Chemical Group Co. Ltd. Kunming 650600 China7 School of Civil Engineering North China University of Technology Beijing 100144 China ncut.edu.cn8 General Research Institute of Mining & Metallurgy Technology Group Beijing 100160 China5 Kunming Engineering & Research Institute of Nonferrous Metallurgy Co. Ltd. Kunming 650051 China9 China Nonferrous Metals Industry Kunming Survey and Design Research Institute Co. Ltd. Kunming 650051 China1 Faculty of Land Resources Engineering Kunming University of Science and Technology Kunming 650093 China kmust.edu.cn AbstractUnusual rainfall is the primary cause of the failure of the tailing dams, and overtopping is the most representative model of the tailing dam failure. The upstream tailing dam was selected as the research object to study the whole process of breach extension and the overtopping dam-failure mechanism under the full-scale rainfall condition. The results showed that the significant size grading phenomenon in the front, middle, and end of the tailing pond was obvious due to the flow separation effect, and its average particle diameter was D50. At different moments of rainfall, the height of the infiltration line at different positions of the dam body was different; at the rainfall of 3600 s, the height of the infiltration line lagged behind the height of the tailing pond, and this phenomenon from the tail of pond to the outside of the dam slope became more obvious. After the rainfall of 3600 s, the height of the infiltration line lagging behind the water level in the pond basically disappeared, and the rate of infiltration line rise kept pace with the rate of water level. The process of overtopping dam-failure experienced dam overtopping (gully erosion), formation of a multistepped small “scarp,” breach rapid expansion, formation of large “scarp,” and burst (fan-shaped formation). The width and depth of the breach showed a positive correlation, and the widening rate of the breach was 3 to 8 times of the deepening rate, especially in the middle of the dam break, widening behavior occupied the dominant factor. The shape of the dam body after failure was parabolic, and the dam body had obvious elevation changes. These results provide the theoretical guidance and engineering application value for improving the theory and early warning model of the upstream tailing dam.https://pubs.geoscienceworld.org/lithosphere/article/2022/Special%2010/5922501/618819/Experimental-Study-on-Failure-Model-of-Tailing-Dam |
| spellingShingle | Guangjin Wang Bing Zhao Rong Lan Dianwen Liu Bisheng Wu Yaoji Li Quanming Li Hanmin Zhou Mingsheng Liu Wenlian Liu Xinjie Liu Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy Rainfall Lithosphere |
| title | Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy Rainfall |
| title_full | Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy Rainfall |
| title_fullStr | Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy Rainfall |
| title_full_unstemmed | Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy Rainfall |
| title_short | Experimental Study on Failure Model of Tailing Dam Overtopping under Heavy Rainfall |
| title_sort | experimental study on failure model of tailing dam overtopping under heavy rainfall |
| url | https://pubs.geoscienceworld.org/lithosphere/article/2022/Special%2010/5922501/618819/Experimental-Study-on-Failure-Model-of-Tailing-Dam |
| work_keys_str_mv | AT guangjinwang experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT bingzhao experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT ronglan experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT dianwenliu experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT bishengwu experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT yaojili experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT quanmingli experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT hanminzhou experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT mingshengliu experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT wenlianliu experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall AT xinjieliu experimentalstudyonfailuremodeloftailingdamovertoppingunderheavyrainfall |