نتایج جستجو برای: earth dam

تعداد نتایج: 105935  

Journal: :Nucleation and Atmospheric Aerosols 2023

In dam construction stages when an earth embankment has retained a reservoir with constant water surface elevation for long time, seepage conditions within the will be reach steady state. If it is necessary to drain quickly, pore-water pressures in may remain relatively high while stabling effect of reservoir's weight along upstream (U/S) side removed. This process referring as "Rapid Drawdown"...

Journal: :E3S web of conferences 2023

Design, construction, as well reliable and safe operation of earthen hydraulic structures (earth dams) in the Republic Uzbekistan, located a seismically hazardous zone, require constant improvement load calculation methods, required by building codes, including loads (static - gravity, hydrostatic) temporary dynamic (seismic). The current normative method does not take into account non-one-dime...

ژورنال: علوم آب و خاک 2008
هاشمی, سید علی اصغر , عرب خدری, محمود ,

  In order to quantitatively evaluate the sediment yield in ungauged basins, it is necessary to use empirical models. The EPM model, as a model which is using in Iran, has sometimes been evaluated. Most evaluations have often been conducted by using river's sediment information and direct measurements of dam reservoir sedimentation have been less used, while the sediment measurement method on r...

Journal: :Journal of Geoscience and Environment Protection 2018

Journal: :Water 2023

With the majority of United States Department Agriculture-Natural Resources Conservation Service (USDA-NRCS)-sponsored earthen dams exceeding their planned service life, seepage is a concern since it common failure mechanism among as whole. Seepage occurs when water penetrates hydraulic barrier to create open pathways, channels, or piping leading internal erosion stability issues due increased ...

Journal: :E3S web of conferences 2023

The article is devoted to the dynamic problems of studying strain state earth dams under impacts. A method developed for solving wave determine stress-strain structures, in particular, dams. Based on use finite difference method, an algorithm and calculation formulas were that have second-order accuracy time coordinates. advantage implementation complex nonlinear deformation models, taking into...

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