Study on the Evolution Characteristics of Dam Failure Due to Flood Overtopping of Tailings Ponds DOI Open Access

Zhijie Duan,

Jinlong Chen,

Jing Xie

et al.

Water, Journal Year: 2024, Volume and Issue: 16(17), P. 2406 - 2406

Published: Aug. 27, 2024

There has been a frequent occurrence of tailing dam failures in recent years, leading to severe repercussions. Flood overtopping is an important element contributing these failures. Nevertheless, there scarcity studies about the evolutionary mechanisms breaches resulting from flood overtopping. In order fill this knowledge vacuum, study focused on characteristics and triggering failures, utilizing Heshangyu tailings pond as prototype. The process breach evolution was revealed by conduction small-scale model testing. A scaled-down replica constructed at ratio 1:150, controlled experiment conducted simulate caused water overflowing. Based results, following conclusions were drawn: (1) rise level become saturated, liquefaction flow local slope sliding initial dam. If sediment-carrying capacity overflowing exceeded shear strength tailings, erosion would accelerate landslides slope, generating sand-laden flow. (2) primarily influenced erosion, which subsequently resulted both laterally widened longitudinally deepened breach. As expanded, sand-carrying increased, faster rate failure. can be categorized into four distinct stages: gully formation stage, lateral broadening stage gully, cracks collapse surface, stable collapse. (3) outflow spread downstream radial pattern, forming alluvial fan. Additionally, depth deposited mud first increased declined distance grew. findings research provide basis for prevention control disasters due

Language: Английский

Assessment of a Tailings Dam Breach by Experimental, Numerical, and Gene-Expression Programming Model DOI

Arian Eghbali,

M Heydari Soltanabadi,

Mitra Javan

et al.

Water Resources Management, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

Citations

0
Source and Migration Pathways of Heavy Metals in Soils from an Iron Mine in Baotou City, China DOI Open Access
Changyu Wang,

Dan-Hong Xu,

Yongli Li

et al.

Minerals, Journal Year: 2024, Volume and Issue: 14(5), P. 506 - 506

Published: May 12, 2024

The exploitation of iron ore could cause heavy metals pollution in the soils, which threatens ecosystem and human health. In this study, soil, stream sediment, tailings, rock, atmospheric deposition samples were collected from an mine Baotou City. concentrations As, Cd, Cr, Cu, Hg, Ni, Pb, Zn, Al2O3, CaO, K2O, MgO, Na2O, SiO2, Fe2O3, as well mineral composition metal speciation samples, analyzed for assessment source identification metals. results reveal that concentration Cu soils was significantly higher than background value, unpolluted to moderately polluted state main level. By analyzing relationship between Cu/Al2O3 CaO different characteristics chemical index alteration (CIA), composition, profiles, suggest tailings soils. distribution sediments indicated hydraulic transport may be one migration pathways. addition, wind also a pathway migration.

Language: Английский

Citations

2
A Detailed Reaction Mechanism for Thiosulfate Oxidation by Ozone in Aqueous Environments DOI
Alexandra M. Deal,

Alexander Prophet,

Franky Bernal

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(42), P. 18959 - 18968

Published: Oct. 8, 2024

The ozone oxidation, or ozonation, of thiosulfate is an important reaction for wastewater processing, where it used remediation mining effluents, and studying aerosol chemistry, its fast rate makes excellent model reaction. Although ozonation has been studied since the 1950s, challenges remain in developing a realistic mechanism that can satisfactorily account all observed products with sequence elementary steps. Here, we present novel measurements using trapped microdroplets to study pH-dependent kinetics. We detect known intermediates, including SO

Language: Английский

Citations

1
Study on the Evolution Characteristics of Dam Failure Due to Flood Overtopping of Tailings Ponds DOI Open Access

Zhijie Duan,

Jinlong Chen,

Jing Xie

et al.

Water, Journal Year: 2024, Volume and Issue: 16(17), P. 2406 - 2406

Published: Aug. 27, 2024

There has been a frequent occurrence of tailing dam failures in recent years, leading to severe repercussions. Flood overtopping is an important element contributing these failures. Nevertheless, there scarcity studies about the evolutionary mechanisms breaches resulting from flood overtopping. In order fill this knowledge vacuum, study focused on characteristics and triggering failures, utilizing Heshangyu tailings pond as prototype. The process breach evolution was revealed by conduction small-scale model testing. A scaled-down replica constructed at ratio 1:150, controlled experiment conducted simulate caused water overflowing. Based results, following conclusions were drawn: (1) rise level become saturated, liquefaction flow local slope sliding initial dam. If sediment-carrying capacity overflowing exceeded shear strength tailings, erosion would accelerate landslides slope, generating sand-laden flow. (2) primarily influenced erosion, which subsequently resulted both laterally widened longitudinally deepened breach. As expanded, sand-carrying increased, faster rate failure. can be categorized into four distinct stages: gully formation stage, lateral broadening stage gully, cracks collapse surface, stable collapse. (3) outflow spread downstream radial pattern, forming alluvial fan. Additionally, depth deposited mud first increased declined distance grew. findings research provide basis for prevention control disasters due

Language: Английский

Citations

0