Adequacy of Seepage Analysis in Core Section of the Earthen Dam with Different Mix Proportions

Kanchana, H.J.; Prasanna, H. S.

doi:10.1016/j.aqpro.2015.02.109

Cited by 8 publications

(6 citation statements)

References 9 publications

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“…In [12], a study to investigate the determination of the seepage-induced flow under and through an earth dam based on Group Method of Data Handling (GMDH) algorithm [13], [14] carried out. [15], analyzed the usage of various materials with different combinations to zone type earthen dams with central impervious vertical core to study the behavior of phreatic line at downstream phase by varying effective length of horizontal drainage filter. To determine the soil-water characteristic curve (SWCC), a model with a particular focus on its application to slope stability analysis under transient unsaturated seepage conditions was used.…”

Section: Experimental Methodsmentioning

confidence: 99%

A Review of Dams and the Ring of Calculating the Water Seepage in the Earthfill Dams

Nabil El-Hazek,

Badawy Abdel-mageed,

H. Haded

2021

Engineering Research Journal - Faculty of Engineering (Shoubra)

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Earth dams' failure may occur due to different reasons such as structural instability conditions, hydraulic conditions, seepage through dam body, and/or rapid drawdown. The determination of factor of safety for the dam slope stability under different cases of operations is vital to ascertain the dam overall safety. In this study, Finite Element modelling is used to simulate seepage and slope stability analysis of earth dam problems using GeoStudio software. The model is verified by the practical implementation of the dam. Then, it is used to analyse seepage and stability of Prototype earth fill dam in Banha University. The Bishop analytical method is used to assess the stability of the dam side slopes. The results of the analysis presented in this thesis confirm the safety of earthfill dam against combined seepage and slope stability under all the normal and failure cases during the operation. Seepage analysis and Stability Investigation are very important issues, which should be considered in designing.

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Section: Experimental Methodsmentioning

confidence: 99%

A Review of Dams and the Ring of Calculating the Water Seepage in the Earthfill Dams

Nabil El-Hazek,

Badawy Abdel-mageed,

H. Haded

2021

Engineering Research Journal - Faculty of Engineering (Shoubra)

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“…For the construction of embankment cores, combining clay with some concreting materials is a realistic option. Some examples of clay core composites are mudstone core (Cavounidis 1997), Mudrock-ysch (Dounias et al 2002), puddle clay composite with black soil and silty sand (Kanchana and Prasanna 2015), asphalt concrete (Alemie et al 2021), etc compacting clay with cementing materials give more strength and low permeability. For better stability with the ltration of pore water, some percentages of sandy soil were added to the puddle clay during the construction of the composite clay core.…”

Section: Introductionmentioning

confidence: 99%

Parametric Optimization of Bentonite-fly-ash Composite Core for Earthen Embankment using Taguchi Coupled Sunflower Optimization Algorithm

Subhadarsini

Giri

Das

2023

Preprint

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A typical earthen embankment is a raised compacted wall-like structure basically consisting of an outer shell to permit seepage of minimum piping, a centrally located core, and a base drainage filter to check the flow of water through it. The earthen embankment needs a centrally stabilized clay core made off locally available puddle clay composite with coarse soil in order to store and divert storm water. In the current work, a compression moulding technique was used employed to build a low-cost composite for clay core using readily available bentonite reinforced with fly-ash. The experimental work initiated with the characterization of the locally collected soil, bentonite and fly-ash along with the micro structural investigation utilizing Scan Electron Microscopy (SEM) and Energy Dispersive X-Ray (EDX). Proctor test has been employed to stabilize clay core composite using different percentage ratios of bentonite and fly-ash according to the Taguchi L9 orthogonal array. The obtained maximum dry density (MDD) and optimum moisture content (OMC) were arranged in the design of the experiment (DOE) to examine the best possible results. The experimental findings from the Taguchi optimization approach determine the optimum values of OMC and MDD. The Analysis of variance (ANOVA) was performed to determine the primary factor influencing the strength of the clay core using signal-to-noise (S/N) ratio. A meta-heuristic method named as Sunflower optimization technique was employed to validate the generated optimum OMC and MDD. Verified OMC and MDD results were corroborated with the impervious core properties of the existing structures.

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“…Rezk (1995) studied the effect of changing the relative permeability between the dam's core and body on seepage through an earth dam with a vertical internal core. Kanchana & Prasanna (2015) used different combinations of materials to form zoned earthen dams with central vertical cores and evaluated the behavior of the phreatic line. Salem et al (2019) studied the effect of core permeability, width, base thickness, and penetration, for an earth dam with and without an internal core, both experimentally and, using SEEP/W, numerically.…”

Section: Introductionmentioning

confidence: 99%

Effects of core characteristics on seepage through earth dams

Abdel-Kawy

AboulAtta

El-Molla

2021

Water Practice and Technology

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In this research, SEEP2D and SEEP/W numerical models are used to simulate seepage through earth dams with internal cores. In order to evaluate the two models' performance, they were compared in cases with no, vertical, and wedge-shaped cores. SEEP/W was then used to study further cases due to its accuracy in drawing the phreatic line within the core zone. The effect of the core's characteristics on the amount of discharge, and the phreatic line's levels at the core's upstream and downstream faces were investigated. Four core types – vertical, wedge-shaped, upstream inclined, and downstream inclined – were considered. Different hydraulic conductivities, upper widths, and core slopes were also evaluated. The wedge-shaped core is the most effective of those investigated in reducing seepage discharge and the phreatic line's level at the core's downstream face, the vertical core came second. Design equations are provided for all the core shapes considered in the study.

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Adequacy of Seepage Analysis in Core Section of the Earthen Dam with Different Mix Proportions

Cited by 8 publications

References 9 publications

A Review of Dams and the Ring of Calculating the Water Seepage in the Earthfill Dams

A Review of Dams and the Ring of Calculating the Water Seepage in the Earthfill Dams

Parametric Optimization of Bentonite-fly-ash Composite Core for Earthen Embankment using Taguchi Coupled Sunflower Optimization Algorithm

Effects of core characteristics on seepage through earth dams

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