Stability Analysis of Dyke Using Limit Equilibrium and Finite Element Methods

Shivamanth, A.; Athani, Shivakumar; Desai, Mitali; Dodagoudar, G. R.

doi:10.1016/j.aqpro.2015.02.111

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…Upon reviewing the existing literature, it is evident that previous studies predominantly assessed the stability of embankment dam bodies through the utilization of limit equilibrium assessments (Lam, Fredlund 1993;Duncan 1996;Shivamanth et al 2015;Wu et al 2020;Gordan et al 2022). In order to conduct these assessments, engineers are required to assess the strength properties of the materials used in the dam, which encompass cohesion, internal friction angle, and other pertinent variables.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of stability in rock-fill dams by numerical analysis methods: a case study (Gümüşhane-Midi Dam, Türkiye)

Sari

2023

Baltica

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Serious stability issues could arise both during and after construction if the dams’ hull designs are not realistically accurate. Engineering studies are therefore crucial for identifying the body’s instability properties in designing the dam body. In this study, horizontal and vertical displacement and stress-deformation analyses were carried out on the body of the Midi Waste Dam located in Karamustafa Village of Gümüşhane Province. In these analyses, the elasticity modulus and Poisson’s ratio of the soil were determined using the seismic method, which is one of the commonly used geophysical methods. The cohesion and internal friction angle of the rock fill were determined by taking into account Leps’ charts. The state of the dam body under the influence of the siltation load and seismic load at the end of operation was shown by applying the finite element method. It was found that there was no instability issue with the researched dam because the safety numbers obtained from the stability study of the dam body were greater than the 1.2 safety number accepted for the stability of the dams (SRF: 2.03, SRF: 1.37). The maximum vertical displacement of the dam body at the foundation base was found as 3.78 cm, the horizontal displacement as 5.80 cm, and the total displacement amount as 6.75 cm when the dam body was examined in terms of displacements. In terms of the statics of the dam body, the vertical, horizontal, and total displacements estimated with the numerical analysis methods did not present a problem, and it was demonstrated that this scenario was also supported by the stability of the body in the applied analyses.

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Section: Discussionmentioning

confidence: 99%

Evaluation of stability in rock-fill dams by numerical analysis methods: a case study (Gümüşhane-Midi Dam, Türkiye)

Sari

2023

Baltica

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“…Salah satu aspek yang harus mendapat perhatian dengan seksama adalah fluktuasi muka air di dalam waduk. Naik dan turunnya muka air di dalam sebuah waduk dapat berpengaruh terhadap kestabilan lereng waduk, terutama ketika perubahan muka air terjadi dengan cepat (Shivamanth et al, 2015). Penurunan kestabilan lereng dapat menimbulkan potensi terjadinya kelongsoran.…”

Section: Pendahuluanunclassified

Analisis Pengaruh Fluktuasi Muka Air Waduk terhadap Stabilitas Lereng Waduk Dengan Menggunakan Program Plaxis 2D

Wulandari

Tjandra

2019

MKTS

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Reservoir is needed as a source of water supply to the surrounding populations. The design of a reservoir needs to consider several aspects of soil embankment such as variations in water content and changes in shear soil shear strength and also the influence of water level in reservoir. The purpose of this research is to analyze these three aspects in the design of a reservoir. This research was begun by taking soil samples for embankment and conducting soil tests to obtain soil characteristics at the initial condition. The further laboratory tests were conducted to determine the effect of changes in water content on the shear strength of the soil. The variation of soil embankment characteristic was then modeled by Plaxis 2D program to obtain the effect of changes in soil embankment characteristic and fluctuation of the water level in the reservoir. The results showed that the increase in water content significantly decrease the shear strength of the soil. The changes of soil shear strength affect the pattern of slope failure and safety factor. In addition, the pattern and direction of the slope failure were also influenced by the water level of the reservoir.

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“…Due to heavy metals, leachate of ash ponds can easily contaminate the water bodies and soil [9]. There are different methods of increasing the elevation of the dyke structures [10]. Improper compaction can compromise the integrity of dyke, especially in upstream raising method, starter dyke properties are not good for construction, complications during the design of ash dyke because of the absence standard guidelines for design and maintenance of coal ash dyke and due to seismic loading [11].…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis of Slope Induced with Coal Ash Dykes

Roshan,

Meena,

Paswan

2023

Advances in Transdisciplinary Engineering

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Safe disposal of coal ash slurry is a primary concern of the environment owing to the bulk generation of ash in industries, especially in any developing country. Generally, it is observed that the generated coal ash waste is disposed of into the ash ponds as slurry. Ash dyke breaches may inundate the surrounding area with toxic ash slurry, thus inducing a high environmental hazard. This article presents a study on the slope stability of ash dyke structures for different geometries, which may be constructed of various materials and are subjected to varied seepage conditions. The present analysis compares different dyke erection methodologies, namely the upstream method, centreline method and downstream method. Numerical analysis is performed using Geostudio Slope/w software. The study found that ash dyke safety increases when the dyke structures are designed with adequate drainage. Further, from this study, it can be concluded that the dyke stability not only depends on the geotechnical properties of the ash material used in its construction but also on the design of the dyke, the method of erection and the seepage through the dyke.

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Stability Analysis of Dyke Using Limit Equilibrium and Finite Element Methods

Cited by 9 publications

References 4 publications

Evaluation of stability in rock-fill dams by numerical analysis methods: a case study (Gümüşhane-Midi Dam, Türkiye)

Evaluation of stability in rock-fill dams by numerical analysis methods: a case study (Gümüşhane-Midi Dam, Türkiye)

Analisis Pengaruh Fluktuasi Muka Air Waduk terhadap Stabilitas Lereng Waduk Dengan Menggunakan Program Plaxis 2D

Stability Analysis of Slope Induced with Coal Ash Dykes

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