نتایج جستجو برای: water dam

تعداد نتایج: 560492  

2017

The Janneh dam is a 162-meter high Roller Compacted Concrete arch-gravity dam under construction in the Nahr Ibrahim Valley of Lebanon. The impounded reservoir will supply water, irrigate agricultural areas and generate hydropower [1]. The dam will serve the Northern areas of Greater Beirut Mount Lebanon [2]. The project site is located in highseismicity region. The Peak Ground Accelerations ar...

ژورنال: مواد پرانرژی 2019

Abstract Safety evaluation of concrete dam under critical situations such as blast loading has gained importance in recent years due to the great number of accidental events and terrorist bombing attacks. In the present study, the dynamic response of Karun IV double curved concrete arch dam under air blast loading has is evaluated. A finite element model of dam-reservoir-foundation system is bu...

Journal: :International journal of advanced research 2021

The Indirasagar Dam (Punasa Dam) is a multipurpose key project of Madhya Pradesh on the Narmada river at Nagar in Khandwa (Tehsil West Nimar district) India.The physical and chemical properties water including temperature, pH, transparency, dissolved oxygen, biological oxygen demand, hardness, nitrate, calcium phosphorus concentration, were monitored from October 2018 to September 2019. paramet...

2016
Giuseppina Siciliano Frauke Urban

Given the opportunities offered by foreign investment in energy infrastructure mostly by Chinese firms, the Government of Cambodia is giving high priority to developing hydropower resources for reducing energy poverty and powering economic growth. Using a “Political ecology of the Asian drivers” framework, this paper assesses China’s involvement in the development of large dams’ in Cambodia and...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2009
V Puig J Romera J Quevedo C M Cardona A Salterain E Ayesa I Irizar A Castro M Lujan P Charbonnaud P Chiron J-L Trouvat

This paper proposes the use of predictive optimal control as a suitable methodology to manage efficiently transport water networks. The predictive optimal controller is implemented using MPC control techniques. The Arrêt-Darré/Arros dam-river system located in the Southwest region of France is proposed as case study. A high-fidelity dynamic simulator based on the full Saint-Venant equations and...

ژورنال: علوم آب و خاک 2022

Humans are always trying to change land to use natural resources to meet their needs. One of the land use changes that take place in order to benefit from sustainable water resources is dam construction. Dam construction has many positive and negative consequences for the environment from the beginning to use. The objective of this study was to investigate the effect of Gotvand Dam on the probl...

2012
Stuart Orr Jamie Pittock Ashok Chapagain David Dumaresq

Proposed dam construction in the Lower Mekong Basin will considerably reduce fish catch and place heightened demands on the resources necessary to replace lost protein and calories. Additional land and water required to replace lost fish protein with livestock products are modelled using land and water footprint methods. Two main scenarios cover projections of these increased demands and enable...

2010
Iván A. Contreras Samuel H. Hernández

Leakage is a major safety issue that, if left unchecked, may result in dam failure by various mechanisms. There is enormous pressure on dam operators to repair leaks without significant delays. Frequently, the need to reduce the risk of failure or control water loss has led to costly remedial repairs that are planned and executed without a complete understanding of the problem. A lack of approp...

Journal: :Acta medica 2014
Martin Kapitan Zdenka Sustova Romana Ivancakova Jakub Suchanek

The purpose of this study was to test the hypothesis that more recently developed rubber dam systems (OptraDam ® Plus and OptiDam™) are faster and easier to handle, and that the quality of isolation is not decreased. The rubber dam systems were applied in standard conditions on a dental simulator in several model clinical situations. The time of preparation, application and removal were measure...

Journal: :آب و خاک 0
علیرضا عمادی معصومه خادمی

abstract regarding temporal variation of rivers discharge and demands, for suitable use of dam reservoirs stored water, application of operation rule curves is necessary. operation rules are expressed with rule curves. application of yield model is one of the methods of operation curve preparation, which correlates reservoir operation with reservoir storage volume in first period. in this study...

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