Studying the seepage phenomena under a concrete dam using SEEP/W and Artificial Neural Network models.

Saleh, Layla

doi:10.1088/1757-899x/433/1/012029

Cited by 14 publications

(4 citation statements)

References 4 publications

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“…Tayfur et al [25] combined finite elements and artificial neural networks to model a feed-forward three-layer model to invert seepage in an earth and rock dam using backpropagation learning. Saleh [26] obtained reasonable values by combining an artificial neural network and SEEP/W model in calculating the seepage properties of concrete dams.…”

Section: Introductionmentioning

confidence: 99%

A New Approach for Seepage Parameters Inversion Analysis Using Improved Whale Optimization Algorithm and Support Vector Regression

Li,

Shen,

Sun

et al. 2023

Applied Sciences

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Seepage is the primary cause of dam failures. Conducting regular seepage analysis for dams can effectively prevent accidents from occurring. Accurate and rapid determination of seepage parameters is a prerequisite for seepage calculation in hydraulic engineering. The Whale Optimization Algorithm (WOA) was combined with Support Vector Regression (SVR) to invert the hydraulic conductivity. The good point set initialization method, a cosine-based nonlinear convergence factor, the Levy flight strategy, and the Quasi-oppositional learning strategy were employed to improve WOA. The effectiveness and practicality of Improved Whale Optimization Algorithm (IWOA) were evaluated via numerical experiments. As a case study, the seepage parameters of the Dono Dam located on the Baishui River in China were inversed, adopting the proposed inversion model. The calculated seepage field was reasonable, and the relative error between the simulated head and the measured value at each monitoring point was within 2%. This new inversion method is more feasible and accurate than the existing hydraulic conductivity estimation methods.

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Section: Introductionmentioning

confidence: 99%

A New Approach for Seepage Parameters Inversion Analysis Using Improved Whale Optimization Algorithm and Support Vector Regression

Li,

Shen,

Sun

et al. 2023

Applied Sciences

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“…In the case of concrete dam (Elliotis, 2019), various investigators have employed mathematical models to analyze steady-state seepage and evaluate seepage stability (Kasama et al, 2020) in rubble mounds under caisson structure exposed to tsunami overflow and seepage flow. Additionally, Saleh (2018) and Zhang et al (2021) observed seepage phenomena in reinforced concrete dam foundations using a finite element method that was based on an artificial neural network model with variations in pile depth and grouting location.…”

Section: Introductionmentioning

confidence: 99%

Seepage Analysis and the Reservoir Water Pollution Potential under Vertical Dam Structure Planning

Dinar C. Istiyanto,

Wulandari,

Shafan A. Aziiz

et al. 2023

jcef

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A prospective resolution to the intricate predicaments of flooding, sanitation, and the availability of unprocessed water for the populace of Jakarta residents is the implementation of the coastal reservoir paradigm. This paradigm entails harnessing the latent capacity of the Cisadane River flow and its subsequent storage within a retention pond, and then subjecting it to reprocessing to serve as a viable source of raw water. The selection of a vertical seawall design was based on the objective of creating an effective barrier between the reservoir and the sea, while also considering several environmental factors. This design was selected with the aim of minimizing the need for extensive soil excavation and rock placement. However, it is important to note that the risks of construction failure associated with seepage under hydraulic structure and dam stability pose significant challenges. Besides preventing saltwater intrusion and maintaining the integrity of the reservoir as a freshwater source, dam must be designed to mitigate potential seepage failure and intrusion issues. To address these concerns, this study employed numerical simulation using the SEEP/W and CTRAN/W software. The simulation was carried out to analyze seepage discharge under a vertical dam and predict potential seawater intrusion into the reservoir. The dam was examined over a ten-year period, with varying embankment widths of 10m, 20m, and 30m. The analysis considered changes in water level (ΔH) and the addition of a cut-off wall at depths of 5m, 10m, and 15m. The obtained results showed that seepage discharge rates amounted to 3,14x10-4 m3 s-1, 2,67x10-4 m3 s-1, and 2,50x10-4 m3 s-1 for embankment widths of 10m, 20m, and 30m, respectively, under a 1m level difference condition. Following this, the safety factor for piping on vertical embankment was determined as 1.10, 1.34, and 1.39 for widths of 10m, 20m, and 30m, respectively. This factor was found to increase to 4.03 when the embankment distance was widened, and a 15m deep cut-off wall was installed. It is important to note that the seawater intrusion model predicted a seawater concentration of 65,12 g m-3 at the bottom for an embankment width of 10m, while no intrusion was observed at widths of 20m and 30m with ΔH=1m. This study aims to assess potential risks of piping due to seepage and seawater contamination at the Cisadane Estuary.

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“…The construction, operation and maintenance costs of these structures are increased with the unexpected site foundation problems due to the treatment operation to support these types of soil problems. Examples of these problems include seepage piping erosion and quick sand in the upstream and underneath structure foundations [3,4]. Climate changes increased the drought and water crisis in arid and semi-arid areas, causing a requirement of new facilities to control and benefit from water resources in these areas [5].…”

Section: Introductionmentioning

confidence: 99%

A Practical Geotechnical Analysis of in situ Stress Variations and Hydraulic Stability of Small Weirs Using SEEP/W and SIGMA/W Simulation

Siaede

2019

eijs

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Geotechnical soil problems underneath foundation of hydraulic structures occurs due to engineering soil properties, geological setting and hydraulic properties of the projects. Two finite element programs of Geoslope 2012 software, SIGMA/W and SEEP/W, were used for analysis of in situ stresses, load deformation behavior, seepage quantity and vertical gradient below Teeb weir foundation, to compute factors of safety against seepage uplift. The site soil is a granular (gravel, sand and silt), weakly cemented soil cohered by gypsum and clay materials. The area has low lying topography, with slightly tectonic activities. The model results show that the upstream side stresses are reduced while the pore pressure are increased, indicating decreased stability. Soil displacement and settlement were measured and the effects of these displacements on the low cemented soil particles were discussed. The pressure distribution and vertical hydraulic gradient measured and used for analyze the weir stability. Finally, the soil potential failure zones were drawn to fix the main risks in each sides of the weir.

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Studying the seepage phenomena under a concrete dam using SEEP/W and Artificial Neural Network models.

Cited by 14 publications

References 4 publications

A New Approach for Seepage Parameters Inversion Analysis Using Improved Whale Optimization Algorithm and Support Vector Regression

A New Approach for Seepage Parameters Inversion Analysis Using Improved Whale Optimization Algorithm and Support Vector Regression

Seepage Analysis and the Reservoir Water Pollution Potential under Vertical Dam Structure Planning

A Practical Geotechnical Analysis of in situ Stress Variations and Hydraulic Stability of Small Weirs Using SEEP/W and SIGMA/W Simulation

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