Failure of a geomembrane lined embankment dam – Case study

Messerklinger, S.

doi:10.1016/j.geotexmem.2013.12.004

Cited by 14 publications

(4 citation statements)

References 4 publications

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“…Failures in dams and reservoirs protected by geomembranes have also been reported in the literature (e.g. Wu et al, 2008;Messerklinger, 2014;Dong et al, 2016;Bhowmik et al, 2018) indicating the need for further studies.…”

Section: Introductionmentioning

confidence: 85%

Geomembrane as an Upstream Impermeable Blanket of Embankment Dams - Laboratory and Numerical Study

Pierozan¹,

Teixeira²,

Araújo³

et al. 2019

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The use of geosynthetics has been a common practice in geotechnical engineering when the improvement of local soil characteristics is necessary. This paper presents an experimental and numerical study of the performance of HDPE geomembrane as impermeable blanket installed upstream of embankment dams, a treatment technique for very permeable foundation. Data based on project, field and laboratory tests of the Brazilian Salto Hydroelectric Power Plant were presented to gather information about the constructive method and to support further studies. A small-scale seepage model was constructed to represent the transverse section geometry of a hypothetical embankment dam, whose geometry was adopted based on Salto Hydroelectric Power Plant. Likewise, a numerical model was elaborated referring to the small-scale seepage model to perform several parametric analyses. The obtained results indicated that the geomembrane sealing system acts increasing the flow path through the dam foundation, resulting in lower pore-pressures into the dam. Additionally, the hydraulic parameters in the soil mass may vary considerably in case of damage to the geomembrane. In general, the study has shown that the use of synthetic membranes can be a good solution for treatment of pervious foundations and possible defects can lead to the reduction of their performance.

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Section: Introductionmentioning

confidence: 85%

Geomembrane as an Upstream Impermeable Blanket of Embankment Dams - Laboratory and Numerical Study

Pierozan¹,

Teixeira²,

Araújo³

et al. 2019

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“…Geo-membranes find widespread use in civil and environmental engineering projects as impermeable barriers to prevent fluid migration, such as seepage or pollution, in various applications, including landfills, mining sites, reservoirs, and containment ponds [9][10][11][12]. The correct design and installation of geomembranes are essential to ensuring their longterm effectiveness in providing containment and environmental protection [13].…”

Section: Introductionmentioning

confidence: 99%

Seepage Analysis and Optimization of Reservoir Earthen Embankment with Double Textured HDPE Geo-Membrane Barrier

Onyelowe,

Nimbalkar,

Reddy

et al. 2023

Civ Eng J

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This research paper focuses on conducting a steady state seepage analysis along with the downstream slope factor of safety using the Modified Bishops method in a poorly compacted earthen embankment and optimizing the same reservoir earthen embankment in a case study located near Sadiyavav village in Junagadh district in Gujarat, India. The study site, situated at 21°32'06.5"N and 70°37'26.7"E, is renowned for its Asiatic lions. The analysis and optimization were performed with a double-textured High-Density Polyethylene (HDPE) Geo-membrane barrier. Previously, designs and numerical solutions proposed homogenous embankments and too poorly compacted with no drainage arrangements, which led to anisotropic conditions within the section and water seeping out, cutting the phreatic line. The paper presents the documented improvements in the factor of safety achieved through the seepage analysis and the optimization of the HDPE Geo-membrane barrier. Two improvement techniques were studied using the “Limiting Equilibrium-Finite Element Method” (LS-FEM). The first using (HDPE) Geo-membrane stabilized with gabions, and the second alternative using HDPE Geo-membrane with gabions in addition to rock toe. The study results showed improvements in the downstream slope stability for the two alternatives by 3% and 10%, respectively. Doi: 10.28991/CEJ-2023-09-11-07 Full Text: PDF

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“…is increased the seepage through the dam foundation and caused concentrated erosion of the finegrained material at the soil interface with the dam foundation, finally leading to failure of the dam's foundation [9,10]. A decades-long survey of five reservoirs (Daranduo Reservoir, Jiangxiong Reservoir, Jiaripu Reservoir, Qiongguo Reservoir, and Awoduo Reservoir, as shown in Figure 1(a)) in the Shannan area found that the state of leakage in the dam foundations at these sites lessened with time without any additional antiseepage measures [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Exploring the Occurrence of Clogging in Highly Permeable Coarse Soils of Dam Foundations

Han

et al. 2020

Advances in Civil Engineering

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Leakage through the permeable coarse soils of dam foundations in Tibet, China, lessened over time without any additional antiseepage measures. In fact, clogging generated during the infiltration process is recognized as the major factor in reducing leakage. A laboratory study was conducted to understand clogging in highly permeable coarse soil of a dam foundation with the primary aim of determining the clogging patterns and optimum clogging particle size (PS). Seven replicate experiments were constructed using soil media with PS ranges of 32–64 mm, 16–32 mm, 8–16 mm, 4–8 mm, 2–4 mm, 1-2 mm, and 0.5–1 mm to observe clogging after feeding the soil media with sediments of different PSs. The experimental results showed that four clogging patterns were formed in different PSs of the coarse foundation soil. The ratio of the effective aperture of the soil Dea and the equivalent clogging particle size dede/Dea had a dominant effect on the four clogging patterns (surface clogging, de/Dea>1; surface-internal clogging, 0.5<de/Dea≤1; internal partial pore blockage, 0.25<de/Dea≤0.5; and unclogging, de/Dea≤0.25). The assessment criterion of the optimum clogging pattern was determined by 0.5<de/Dea≤1, and from that, the optimum clogging PS do was calculated.

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Failure of a geomembrane lined embankment dam – Case study

Cited by 14 publications

References 4 publications

Geomembrane as an Upstream Impermeable Blanket of Embankment Dams - Laboratory and Numerical Study

Geomembrane as an Upstream Impermeable Blanket of Embankment Dams - Laboratory and Numerical Study

Seepage Analysis and Optimization of Reservoir Earthen Embankment with Double Textured HDPE Geo-Membrane Barrier

Exploring the Occurrence of Clogging in Highly Permeable Coarse Soils of Dam Foundations

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