Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 13 of 13 for “"Embankment Dam"”.
-
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 …
-
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 …
-
Hydraulic Fracturing in Earth Dams (Boreholes)
… mechanisms of hydraulic fracturing in earth embankment dam cores and boreholes published by various authors have been outlined and compared in this investigation. An experimental study was conducted which reinforces the fact that hydraulic fracturing in boreholes is a tensile phenomenon.
-
Forward modelling and inversion of streaming potential for the interpretation of hydraulic conditions from self-potential data
… interest is the application of the method to embankment dam seepage monitoring and detection. This demands a quantitative interpretation of seepage conditions from the geophysical data. To enable the study of variably saturated flow problems of complicated geometry, a three-dimensional finite …
-
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 …
-
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 …
-
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 …
-
Hydromechanical Stress and Internal Erosion under Earthen Structures
<p>"Dam failures by seepage and internal erosion have reportedly been attributed to up to 40% of all dam failures in the United States. Backwards piping erosion either through the embankment or foundation soils has been reported to be the major contributing method to seepage and internal erosion …
-
Response of riparian plant communities to hydrological alteration: Are seed banks a means of restoration?
… stream above a reservoir, and a stream below an embankment dam. The study of the in situ community revealed that functional group richness and species richness were strongly correlated, that wetland functional groups were outnumbered by facultative functional groups at all sites except for one …
-
Breaching of earth embankments and dams
… construction and management techniques, flood embankment and embankment dam failures occur almost routinely around the world. The need to understand, predict and prevent the breaching process remains a high priority for owners and flood risk managers alike. This research provides new …
-
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 …
-
Flow Behavior of Granular Soil and Impounded Fly Ash Slurries
<p>Failure of an embankment dam around mine tailings and coal ash slurry impoundments typically results in a fast-moving flow of toxic waste that can carry for several miles with disastrous consequence. The most recent catastrophic tailing-dam failure took place on 25 January 2019, at Brumadinho, …