نتایج جستجو برای: reservoir and sediment

تعداد نتایج: 16841488  

Journal: :Computers & Geosciences 2006
Zulfiquar A. Reza Matthew J. Pranter Paul Weimer

In deepwater-reservoir modeling, the proper representation of the spatial distribution of architectural elements is important to account for pore-volume distribution and the connectivity of reservoir sand bodies. This is especially critical for rock and fluid-volume estimates, reservoir-performance predictions, and development-well planning. A new integrated stochastic reservoir-modeling approa...

The present study was carried out to determine the possible origins of sediments entering Taleghan Dam in northern part of Iran, in order to avoid further sedimentation and helping in extension of the useful life of the proposed dam. This was performed by XRD analysis. To do so, first of all, sediment sampling points were positioned along the Taleghan River. The collected samples, after coding,...

Journal: :تحقیقات آب و خاک ایران 0
اسماعیل بیات کارشناس منابع آب، مهندسان مشاور یکم دالی بندار رئیس گروه بررسی های فنی و اجتماعی دفتر مهندسی و معیارهای فنی آب و آبفا وزارت نیرو سعید لطفی کارشناس گروه سیاست گذاری و تخصیص آب دفتر برنامه ریزی کلان آب و آبفا وزارت نیرو

sedimentation in reservoirs reduces dams storage and makes many problems in their operation. therefore accurate computation of sediment volume is essential for appropriate design and optimum reservoir management during its operation. in this research long term field data of sefid-rood dam were used to check the sediment volume computed for ghezelozan basin. the computed volume of sediment by ra...

Houshang Hasounizadeh Reza Tajmehr Samaneh Abdeveis,

Accumulation of sediment transport volume and reduce the useful life of dams, water storage tanks can be. So far, many methods for calculating sediment this is presented in reservoirs are generally classified into two categories: mathematical modeling and experimental .This study examines the effect of using Gstars model parameters in the model, deposition of sediment in the reservoir tank and ...

Journal: :مهندسی سازه 0
نوبخت بختیاری باقر نیکوفر

when a dam is constructed on a river path, inevitably sedimentation of alluvial materials occurred. therefore, the initial capacity of the reservoir reduce gradually, and if don’t predict the effects of this phenomena and its proper control methods, the application of the reservoir may be affected. the findings of this thesis confirm that, the sedimentation in reservoirs and the variations of t...

Journal: :global journal of environmental science and management 0
s. afshar department of civil engineering, science and research branch, islamic azad university, tehran, iran b. saghafian department of civil engineering, science and research branch, islamic azad university, tehran, iran h.r. vosoughifar department of civil engineering, islamic azad university, tehran south branch, tehran, iran

the present study was carried out to determine the possible origins of sediments entering taleghan dam in northern part of iran, in order to avoid further sedimentation and helping in extension of the useful life of the proposed dam. this was performed by xrd analysis. to do so, first of all, sediment sampling points were positioned along the taleghan river. the collected samples, after coding,...

Journal: :Ecological applications : a publication of the Ecological Society of America 2006
Mark B David Lareina G Wall Todd V Royer Jennifer L Tank

Denitrification is an important process in aquatic sediments, but its role has not been assessed in the N mass balance of upper-Midwestern (USA) reservoirs that receive large agricultural riverine N inputs. We used a 4400-ha reservoir to determine the role of denitrification in the N mass balance and effectiveness in reducing downstream transport of NO(3-)N. Sediment denitrification was (1) mea...

2003
Tawan Banchuen Thomas J. Grizzard

The CE-QUAL-W2 model has been selected as a tool for use in water quality management studies of the Occoquan Reservoir. In order for the model to achieve its best possible predictive capability, additional quantitative information on denitrification rates in the reservoir was required. A microcosm operating protocol was developed to obtain such information and also to enhance the understanding ...

2016

The use of art ificial neural network (ANN)modeling for prediction and forecast ing variables in water resources engineering are being increasing rapidly Infrastructural applicat ions of ANN in terms of selection of inputs, architecture of networks, training algorithms, and selection of training parameters indifferent types of neural networks used in water resources engineering have been report...

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