نتایج جستجو برای: embankment dam
تعداد نتایج: 14297 فیلتر نتایج به سال:
In recent years, a new type of dams namely CMD, has attracted so much attention. Different amounts of cement cause a type of behavior that be somewhere between those of embankment dams and conventional concrete dams. This behavior is not perfectly clarified and its analysis, especially under dynamical loading and in nonlinear region of the material, remains unclear. In this paper, Tobetsu dam h...
Concrete faced rockfill dams (CFRDs) are among the structures that due to their advantages such ease of construction and low execution costs,have attracted more attention nowadays.Due to the fact that during large earthquakes,the hydrodynamic pressure will be large and cannot be ignored,the main purpose of this research is to apply reservoir hydrodynamic pressure of dam reservoir caused by the ...
Internal erosion is known as the most important cause of dam failure after overtopping. It is important to improve the erosion resistance of the erodible soil by selecting an effective technique along with the reasonable costs. To prevent internal erosion of embankment dams the use of chemical stabilizers that reduce the soil erodibility potential is highly recommended. In the present study, a ...
The risk related to embankment dam breaches needs be evaluated in order prepare emergency action plans. physical and hydrodynamic parameters of the flood wave generated from failure event correspond various breach parameters, such as width, slope, formation time. This study aimed simulate scenario Yabous (northeast Algeria) analyze its influence on areas (urban natural environments) downstream ...
The study of embankment breaching is not an easy practice, as it includes various parameters to meet the suitability design approach, especially when we consider for long term. Embankment breach studies generally include prediction different parameters. important physical and hydrodynamic flood wave generated from failure are width, slope, formation time, peak outflow, time failure. Out these p...
Abstract It is commonly believed that the permanent deformation introduced by meizoseismal impacts of embankment dams, which impossible to be reinstated and will further endanger safety normal use thereof. In this study, a three-dimensional finite element model dam have been established with equivalent nodal force approach calculate dams under seismic protection. was indicated results accelerat...
introduction: the greatest part of constructed dams belongs to embankment dams and there are many examples of their failures throughout history. about one-third of the world’s dam failures have been caused by flood overtopping, which indicates that flood overtopping is an important factor affecting reservoir projects’ safety. moreover, because of a poor understanding of the randomness of floods...
Jordan is a country with population that increases steadily but punctuated by waves of refugees. Henceforth, will be destabilized prolonged and potential water shortages. With both climate changes, the nation needs to implement comprehensive reform. In many cases, raising height an existing dam would help reduce gap between sources demands. Consequently, original Wala in capacity 9.3 million cu...
The design floods of several reservoirs were recently re-evaluated and the revised spillway outflow could result in dam overtopping with catastrophic consequences for some embankment structures. Herein a physical study was performed on flat and pooled stepped spillways with a slope typical of embankments (θ = 26.6◦) and four stepped configurations were tested: a stepped spillway with flat horiz...
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