نتایج جستجو برای: rockfill dams

تعداد نتایج: 8454  

Journal: :تحقیقات مهندسی کشاورزی 0
جمال محمد ولی سامانی دانشیار گروه سازه های آبی دانشگاه تربیت مدرس رضا فرشاد دانشجوی کارشناسی ارشد سازه های آبی دانشگاه تربیت مدرس

pure rockfill dams have been found specific attention in watershed management and flood control, recently. in addition to hydraulic specific features, one of the important advantages of these structures is their consistency with nature and environment. normally, floods are accompanied with high sediment loads which may enter the body of dam. when flow through dam body governed by hydraulic grad...

Journal: :Remote Sensing 2016
Wei Zhou Shaolin Li Zhiwei Zhou Xiaolin Chang

How to accurately determine the mechanical parameters of rockfill is one of the key issues of concrete-face rockfill dams. Parameter back-analysis using internal or external monitoring data has been proven to be an efficient way to solve this problem. However, traditional internal or external monitoring methods have limitations in efficiency and long-term monitoring. In this paper, the displace...

Journal: :زمین شناسی مهندسی 0
علی قنبری ali ghanbari دانشگاه خوارزمی محسن معجزی mohsen mojezi میثم فدایی meysam fadaee

construction of asphaltic core dams is a relatively novel method especially in iran. iran is located in a region with high seismicity risk. therefore, many researchers have focused on the behavior of such types of dams under earthquake loading. in this research, the behavior of asphaltic core rockfill dams (acrd) has been studied under earthquake loading using nonlinear dynamic analysis method ...

2013
Hadi Mohammadzadeh

The rockfill structures are widely constructed throughout the world and rockfills are largely used in these structures as main materials or filler materials. In the crust of earth dams, the rockfill materials role is to stabilize the body of the dam, however, the behavior of these materials in Particular their shear strength is not fully understood. In this study, different tests have been cond...

2013
Hadi Mohammadzadeh

The rockfill structures are widely constructed throughout the world and rockfills are largely used in these structures as main materials or filler materials. In the crust of earth dams, the rockfill materials role is to stabilize the body of the dam, however, the behavior of these materials in Particular their shear strength is not fully understood. In order to investigate the possible effects ...

2017
Yunjia Wang Zhihong Zhao

Abstract—Rockfills are widely used in civil engineering, such as dams, railways, and airport foundations in mountain areas. A significant long-term post-construction settlement may affect the serviceability or even the safety of rockfill infrastructures. The creep behavior of rockfills is influenced by a number of factors, such as particle size, strength and shape, water condition and stress le...

Journal: :international journal of civil engineering 0
r. mahin roosta assistant professor, engineering faculty, tarbiat modares university, tehran, iran a. alizadeh m.sc student, department of civil engineering, zanjan university,zanjan, iran

in the first impounding of rockfill dams, additional settlements occur in upstream side in saturated rockfills due to collapse phenomenon even high rainy seasons can cause additional deformation in the dumped rockfills. unfortunately these displacements are not taken into account in the conventional numerical models which are currently used to predict embankment dam behavior during impounding. ...

2007
J. M.V. Samani A. Solimani

Detention rockfill dams are an easy and common tool for flood control. Due to their coarse pores, the flow in void spaces is turbulent and non-Darcy. Different relationships introduced by researchers are used to define the hydraulics of the flow within the rockfill materials. The present research is aimed at gaining a better understanding of the difference among these relationships and the sour...

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