Seismic Slope Stability of Embankments Constructed with Pond Ash

Jakka, Ravi S.; Ramana, G. V.; Datta, Manoj

doi:10.1007/s10706-011-9419-8

Cited by 30 publications

(8 citation statements)

References 15 publications

(19 reference statements)

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“…Studies have shown that liquefaction leads to a significant reduction in the safety factors of tailings dams [146]. In addition, the construction method of the dam body, the particle size of the tailings, and the magnitude of the earthquake all affects the stability of the tailings dam during an earthquake [147].…”

Section: Earthquake Action Causes the Tailings Reservoir To Break Thementioning

confidence: 99%

A Comprehensive Review on Reasons for Tailings Dam Failures Based on Case History

Lyu

Jaturapitakkul

et al. 2019

Advances in Civil Engineering

130

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On a global scale, the demand for mineral products has increased substantially with economic development. Consequently, the mining of mineral resources results in the production and accumulation of a large number of tailings, causing many problems with respect to mining, the environment, and the economy. In the mining process, tailings must be reasonably treated to prevent them from entering the water cycle through rivers. The storage of tailings under water can effectively hinder the chemical reactions that they undergo. Therefore, it is a critical practice to store these substances in ponds or impoundments behind dams. However, tailings dams frequently fail, resulting in the discharge of significant quantities of tailings into the natural environment, thereby causing grievous casualties and serious economic losses. This paper discusses reasons including seepage, foundation failure, overtopping, and earthquake for tailings dam failures and explores failure mechanisms by referring to the available literature. This research has determined that the failure of tailings dams is closely related to the state of the country’s economy. Most of the tailings dam breakages in developed countries occurred decades ago. In recent years, the proportion of tailings dam failures in developing countries has been relatively high. Considering the serious damages caused by tailings dam breakage, it is important to understand the main reasons and mechanisms for their failure. The purpose of this review is to provide a reference for the design and construction to the building of the tailing dams and to reduce the occurrences of their failure.

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Section: Earthquake Action Causes the Tailings Reservoir To Break Thementioning

confidence: 99%

A Comprehensive Review on Reasons for Tailings Dam Failures Based on Case History

Lyu

Jaturapitakkul

et al. 2019

Advances in Civil Engineering

130

View full text Add to dashboard Cite

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“…In this paper, *Address correspondence to this author at the School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, P.R. China; E-mail: 120138424@qq.com on the basis of the fluid structure interaction calculation module in the software Geo-Studio and Biot theory [8,9], finite element is adopted to build the equation, in which the node displacement and the pore water pressure are unknown at the same time [10][11][12]. Once the equations are solved, seepage field and stress field are obtained simultaneously [13][14][15].…”

Section: The Fundamental Of Seepage Field and Stress Field Coupling Amentioning

confidence: 99%

Considering the Effect of Reservoir Water Level Lifting on the Slope Stress Analysis of Seepage Field and Stress Field Coupling

Rong¹,

Mei²,

Chen³

2014

TOBCTJ

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This paper analyzes the slope stress analysis of seepage-stress field under the condition of water lifting of reservoir slope, taking a practical reservoir slope project for example, on the basis of investigation and study of the geological environment, the soil geology model of the reservoir slope is established. On the basis of interaction calculation module of the fluid structure in the software Geo-Studio and Biot theory, finite element method of seepage-stress field coupling is applied to study the variation of stress field of the reservoir slope mainly with strong weathering argillaceous sandstone and marl, on the condition that reservoir water level rise and fall. The maximum principal stress is mainly compressive stress, the tensile stress just distributes near the top of the slope; the minimum principal stress is mainly compressive stress.

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“…The raised embankment is generally constructed with either of the following raising methods: upstream, downstream or centerline [1]. Of the raised embankment construction, the downstream method is the most stable construction [2,3,1].…”

Section: Introductionmentioning

confidence: 99%

A Case Study of Las Palmas Tailings Dam Failure

Aswathi

Jakka

Frost

2021

Lecture Notes in Civil Engineering

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The increasing demand for minerals and their subsequent mining causes tailings to be produced in large amounts. Hence, tailings dams have increased in number as well as height to accommodate more storage capacity. Failure of these structures is dangerous with respect to toxic exposure, landslides, liquefaction, etc. In this study, the possible failure mechanisms of the Las Palmas tailings dam, which failed following the 2010 Maule, Chile earthquake, have been examined. Numerical simulation of the dam is carried out using the GeoStudio package to assess the condition of the dam during this seismic event and a pseudo-static analysis is carried out. The strong ground motion of the 2010 Maule, Chile earthquake recorded at three of the stations near the dam site was used as input since there is no record available at the tailings dam site. Slope stability analysis is performed to understand the possible failure mechanism. The Mohr-Coulomb failure criterion is used to define the material properties. Furthermore, the simulation results are compared with the final dam failure scenario.

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Seismic Slope Stability of Embankments Constructed with Pond Ash

Cited by 30 publications

References 15 publications

A Comprehensive Review on Reasons for Tailings Dam Failures Based on Case History

A Comprehensive Review on Reasons for Tailings Dam Failures Based on Case History

Considering the Effect of Reservoir Water Level Lifting on the Slope Stress Analysis of Seepage Field and Stress Field Coupling

A Case Study of Las Palmas Tailings Dam Failure

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