Numerical analysis of seismic stability of a high centerline tailings dam

Naeini, Mahdi; Akhtarpour, Ali

doi:10.1016/j.soildyn.2018.01.019

Cited by 48 publications

(13 citation statements)

References 36 publications

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“…When liquefaction begins to appear in the tailings dam, it is easy for a fissure seepage channel to form and cause local collapse. Simultaneously, the earthquake increases the sliding force or torque of the dam, causing it to slip and break [13]. At present, global seismic activity is becoming more and more active, and the distribution of mineral resources has a certain relationship with the distribution of seismic belts.…”

Section: Earthquake Action Causes the Tailings Reservoir To Break Thementioning

confidence: 99%

“…Tailings, which are waste products in the beneficiation process, are generally stored in a slurry form [8,9]. e purpose of establishing a tailings dam is to safely store tailings to protect the natural environment from damage [10][11][12][13]. Once a tailings pond leaks, it has a major negative impact on the economy, surrounding properties, and people's lives [14,15].…”

Section: Introductionmentioning

confidence: 99%

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

Lyu

Jaturapitakkul

et al. 2019

Advances in Civil Engineering

147

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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%

Section: Introductionmentioning

confidence: 99%

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

Lyu

Jaturapitakkul

et al. 2019

Advances in Civil Engineering

147

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“…On the one hand, different researchers have defined empirical analytical relationships, calibrated with experimental studies, that consider the effect of soil type, its strength, etc. Some of the most widely used relationships are those proposed by [16], which have had satisfactory applications for different problems and numerical studies [14,17] (see Figure 5). Otherwise, resonant column testing with the different materials also allows obtaining the degradation curves [18] (see Figure 6) to introduce them in a numerical tool that models the deterioration with the application of the successive loads [19,20].…”

Section: Models and Parameters That Characterize The Behavior Of Granular Materials Under Cyclic Loadsmentioning

confidence: 99%

State of the Art: Deterioration Models of Railway Ballasts and Subgrades. Recommendations and Applications

Cambronero¹

2020

GJES

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In recent years, rail transport has experienced a great expansion throughout the world, becoming an efficient and competitive transportation system for countries that have thousands of kilometers of tracks. In the coming decades, we contemplate that new and ambitious railway projects will be developed, and the technical difficulties in the interaction with the environment, through which the track aims to circulate and reach greater speeds, make these projects a real challenge for civil engineering. Such are the cases of the expansion of the High-Speed network in China [1] and the expected development of high-speed lines in the UnitedWith respect to high-speed networks, the demographic and economic growth of many of the countries that have a rail network with these characteristics with optimal exploitation conditions and study experience has forced the networks to reach higher speeds to meet the demand and/or economic objectives that are required of this transportation system. The increase in speed could generate an increase in the values of the loads that are transmitted to the railway platform, since the speed is proportional to the value of the loads. This proportion is related to the effect of the weight of the nonsuspense masses of the train, since if this weight does not change but the value of the speed increases, the dynamic effects that occur in the vehicle-track interaction cause this interaction to generate a dynamic overload that increases the value of the loads to be supported by the track. In terms of railway freight transport, the future commercial expansion of several countries can lead to trains having to increase their load and/or transport capacity, either by increasing the number of cars or the axle load that is transmitted to the railway platform [3], thus considering the adaptation of this

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“…Therefore, ensuring their seismic stability is currently an important problem of hydraulic engineering. A large number of works are devoted to the issues of seismic stability of concrete [1][2][3][4][5][6][7][8][9][10] and ground [11][12][13][14][15][16][17][18][19][20][21] dams, the theory of dam calculations under seismic loads is well developed. For calculations of high dams, a calculation method based on a dynamic theory is used.…”

Section: том 8 выпуск 4 (30)mentioning

confidence: 99%

“…Поэтому обеспечение их сейсмостойкости является в настоящее время важной проблемой гидротехники. Большое количество работ посвящено вопросам сейсмостойкости бетонных [1][2][3][4][5][6][7][8][9][10] и грунтовых [11][12][13][14][15][16][17][18][19][20][21] плотин, хорошо разработана теория расчетов плотин при сейсмических нагрузках. Для расчетов высоких плотин используется метод расчетов, основанный на динамической теории.…”

Section: Introductionunclassified

Seismic Stability of the Mooring Wall According to the Results of Numerical Simulation

Esinovsky

Sainov

Zaitsev

et al. 2019

Stroitel’stvo: nauka i obrazovanie

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Introduction. New building codes provide for a significant increase in the magnitude of seismic loads that should be perceived by hydraulic structures. In this regard, even in areas with low seismic activity, there may be a problem of ensuring the seismic stability of hydraulic structures. This is particularly acute in berthing facilities. As a rule, they are not so massive to withstand seismic loads. The issue of seismic stability of berthing facilities has not yet been properly considered. The results of numerical simulation of the seismic stability of the mooring-dividing wall during a 7-point earthquake are considered. A structure about 24 m high located on a non-rock base was investigated. Materials and methods. The seismic stability of the mooring structure was estimated by calculating its stress-strain state under the action of seismic forces. Calculations were carried out by the finite element method. Seismic loads on the structure were determined in two ways — by linear-spectral theory and by dynamic theory. For the calculation of seismic loads, 30 lower frequencies and the natural mode of the structure were determined together with an array of its base. When calculating according to the dynamic theory, the seismic effect was specified in the form of an accelerogram adopted for similar conditions. The direction of seismic impact was assumed horizontal. Results. According to the dynamic theory, seismic loads turned out to be lower than according to linear-spectral theory. However, the results of the calculation of the stress-strain state of the mooring structure were close. It was found that the seismic forces on the mooring wall will reach about a quarter of the weight of the structure. Under the influence of such forces, the mooring wall will lose its stability. Conclusions. To ensure seismic stability, it is recommended to combine the mooring wall and the base plate into a single monolithic structure, as well as to strengthen the lower part of the structure and facilitate the upper one.

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Numerical analysis of seismic stability of a high centerline tailings dam

Cited by 48 publications

References 36 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

State of the Art: Deterioration Models of Railway Ballasts and Subgrades. Recommendations and Applications

Seismic Stability of the Mooring Wall According to the Results of Numerical Simulation

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