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Showing 1 to 14 of 14 for “"Embankment dams"”.
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Stability of Embankment Dams Following Reservoir Drawdown
… program and stability analyses for 11 embankment dams.
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Inspection of Earthen Embankment Dams Using Time Lapse Electrical Resistivity Tomography
According to the National Inventory of Dams (NID), the number of dams across the United States is approximately 85,000. Many of these dams are more than 50 years old and need vast attention to ensure their safety. It is difficult to obtain a full assessment of the dam just by visual inspections …
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Seepage monitoring and diagnosis of distresses in an earth embankment dam using probability methods
Failure of embankment dams may result in catastrophic consequences. Considering seepage and internal erosion are accounted as one of the major causes of failure in earth embankment dams, it is essential to detect any concentrated seepage and sources of distress at early stages. A number of …
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The probabilistic assessment of small homogeneous UK earthfill dams affected by climate change; Precipitation
… small, well-established, homogeneous earthfill embankment dams that are currently in use and whose performance was previously outside the Reservoirs Act 1975, but are now governed by the new Flood and Water Management Act 2010. Many uncertainties are associated with such structures, a situation …
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MECHANICAL AND HYDRAULIC CHARACTERIZATION OF PLASTIC CONCRETE
… impoundment (i.e. rising of the reservoir) of an embankment dam. The FLAC analysis was performed to determine the factors that have the greatest influence on shear strain in a plastic concrete cut-off wall. The experimental program demonstrates that as plastic concrete is strained, the hydraulic …
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Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams
… to stop erosion through cracks in the core of a embankment dam requires that the filter be graded so that it will restrain movement of particles from the core, and that the filter be truly cohesionless, so that it will not crack even when subjected to the same types of deformations that cause …
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Probabilistic Post-Liquefaction Residual Shear Strength Analyses of Cohesionless Soil Deposits: Application to the Kocaeli (1999) and Duzce (1999) Earthquakes
… detrimental effects on the stability of embankment dams, natural soil slopes, and mine tailings. The residual or liquefied shear strength of the liquefiable soils is a very important parameter when evaluating stability and deformation of level and sloping ground. Current procedures for …
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Seismic Tomography for the Integrity Assessment of Earthen Dams and Levees.
Dams are a vital part of a nation's infrastructure. Considering the fact that many of the dams in the United States have approached or are approaching their projected life expectancy of 50 years, these critical infrastructures represent a risk to public safety. Minimizing this risk requires an …
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Seepage induced instability in widely graded soils
… constraints. Much concern exists for embankment dams and levees built using soils with a potential for internal instability. Migration of finer particles to a boundary where they can exit, by washing out, may cause erosion or piping failure and, occasionally, induce collapse of these …
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An experimental study of hydraulic fracture and erosion
… soils. Case histories of hydraulic fracturing in embankment dams and boreholes are reviewed. It is found that hydraulic fracturing in dams is often associated with rapid reservoir filling and zones of low stresses. Previously proposed criteria for hydraulic fracturing are outlined. It is found …
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Finite element analysis of embankment dam due to rapid drawdown events
The stability of large earth embankment dams is imperative for public safety and economic reasons. Among the numerous potential failure modes (which range from internal erosion to overtopping) slope instabilities can be triggered by changing boundary conditions associated with flood loading or …
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Effect of Bacterial Strain on MICP and its Application for the Erosion Control of Fine Sands
… engineering structures, including earth-filled embankment dams and oil and gas extraction wells. Current mitigation solutions are limited to mechanical approaches (e.g. filters, gravel packs), relying on the fulfilment of a ‘paradoxical permeability-retention criterion’; and to the use of …
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Effect of spillway-ogee location on flow uniformity and turbulence at the crest of an ogee weir
… often is the case for spillways associated with embankment dams, the spillway is built on an abutment of the dam itself and must deal with non-uniform and turbulent approach flow from the reservoir retained by the dam to the spillway's location at the side of the dam. Consequently, the approach …