نتایج جستجو برای: concrete dam foundation

تعداد نتایج: 178232  

Some experimental relations have been developed for determining the grout curtain depth, but these relations cannot be applied to any dam with any geological condition. Therefore, the effect of the grout curtain depth on seepage through foundation and abutments of each dam should be studied separately. To examine this parameter in Karun 4 dam, the numerical modeling method was applied using FLA...

Journal: :Open Journal of geology 2022

Mosul and Haditha dams are two large earthfill in Iraq constructed on the Tigris Euphrates rivers, respectively. The were almost at same period mid-eighties of last century. Both suffer from karstification within their foundations. In former, however, problem is more severe than latter. Dam was karstified gypsum limestone beds; different grouting techniques used, but works still going to keep d...

Differences between stress-based and strain-based criteria are investigated in seismic performance evaluation of the arch dams in time domain. A numerical model of the coupled dam-reservoir-foundation system is prepared with the finite element technique. Reservoir is modeled using the Eulerian approach as a compressible domain, and the foundation rock is assumed to be massless. Dynamic equilibr...

Journal: :زمین شناسی مهندسی 0
قدرت برزگری علی ارومیه ای

considering the seepage and choosing an efficient sealing method is very important in dam projects. this issue has a close relationship with engineering geological properties of the dam site. chapar-abad dam is an inhomogeneous earth-fill dam of 44.5 meters height, crest length about 427 meters and a reservoir capacity of 127 million cubic meters. the dam project is under construction and is lo...

2010
CHRISTOPHER FRAYER

1. W. Feller, An Introduction to Probability Theory and Its Applications, Vol. 1, 3rd ed., John Wiley, 1968. 2. R. L. Graham, D. E. Knuth, and O. Patashnik, Concrete Mathematics: A Foundation for Computer Science, Addison-Wesley, 1989. 3. R. Hirshon and R. De Simone, An offer you can’t refuse, Mathematics Magazine 81 (2008) 146–152. 4. L. Takács, On the classical ruin problems, J. American Stat...

Journal: :Theor. Comput. Sci. 1993
Uri Zwick Mike Paterson

The memory game, or concentration, as it is sometimes called, is a popular card game played by children and adults around the world. Good memory is one of the qualities required in order to succeed in it. This however is not enough. When it is assumed that the players have perfect memory, the memory game can be seen as a game of strategy. The game is analysed under this assumption and the optim...

Journal: :international journal of marine science and engineering 2012
h. zare banadkooki s. mazaheri m. r. akbarpour jannat a. aziminejad

it is proposed to use a single base platform in the persian gulf considering its low depth and more appropriate environmental conditions in comparison to north sea and mexico gulf where this kind of platform is very popular. the pile of platform is responsible for transmission of environmental loads resulted from waves, currents, wind and dead loads to foundation of platform. using sacs 5.3 sof...

2010
He Yu Shouju Li Yingxi Liu Jun Zhang H. Yu S. Li Y. Liu

The rockfill is modeled as nonlinear elastic material, whose stress-dependent tangent modulus is related to the confining pressure. The parameters of constitutive relationship of stress and strain are determined by tri-dimensional compression test in laboratory. The model applied in this study adopts the technique of element birth and death to simulate the sequential impoundment process of conc...

2008
Johann Geringer

After some initial trials with RCC the first 3 RCC dams were constructed almost simultaneously. The Zaaihoek Dam and De Mistkraal Weir were designed and constructed by DWAF while the Arabie Dam, now called Flag Boshielo Dam, was designed by a consultant and constructed by a contractor for the then Leboa Homeland Government. The latter, a composite dam with a concrete spillway and an embankment ...

2016
Shou-Kai Chen Xiaoyue Zhang

Abstract: The seepage control system of a high Concrete Face Rock-Fill Dam (CFRD) may have anti-seepage deficiencies during both construction and operation. In order to solve these, the three-dimensional Finite Element Method (FEM) model was built based on dam body filling, anti-seepage system, defect location and bedrock distribution. The seepage field simulation and computation were carried o...

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