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Development of an integrated modeling system for improved multi-objective reservoir operation

Frontiers of Structural and Civil Engineering 2010年第1期4卷 47-55页

作者： Lei WANG Cho Thanda NYUNT Toshio KOIKE oliver saavedra Lan Chau NGUYEN Tran van SAP Department of Civil Engineering the University of TokyoJapan National Hydro-Meteorological Service Ministry of Natural Resources and EnvironmentVietnam

Reservoir is an efficient way for flood control and improving all sectors related to water resources in the integrated water resources ***,multiobjective reservoir plays a significant role in the development of a country’s economy especially in developing *** multi-objective reservoirs have conflicts and disputes in flood control and water use,which makes the operator a great challenge in the decision of reservoir *** improved multi-objective reservoir operation,an integrated modeling system has been developed by incorporating a global optimization system(SCE-UA)into a distributed biosphere hydrological model(WEB-DHM)coupled with the reservoir routing *** new integrated modeling system has been tested in the Da River subbasin of the Red River and showed the capability of reproducing observed reservoir inflows and optimizing the multi-objective reservoir ***,the WEB-DHM was calibrated for the inflows to the Hoa Binh Reservoir in the Da ***,the WEB-DHM coupled with the reservoir routing module was tested by simulating the reservoir water level,when using the observed dam outflows as the reservoir ***,the new integrated modeling system was evaluated by optimizing the operation rule of the Hoa Binh Reservoir from 1 June to 28 July 2006,which covered the annual largest flood *** using the optimal rule for the reservoir operation,the annual largest flood peak at downstream control point(Ben Ngoc station)was successfully reduced(by about 2.4 m for water level and 2500 m^(3)·s^(-1) for discharge);while after the simulation periods,the reservoir water level was increased by about 20 m that could supply future water use.

关键词： distributed biosphere hydrological model(WEB-DHM) optimization multi-objective reservoir the Red River basin

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Towards Determining Global River Discharge Using a Distributed Hydrological Model and Global Mapping

Towards Determining Global River Discharge Using a Distribut...

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International Symposium of Iahs-Pub and the 2nd International Symposium of China-Pub

作者： VALERIANO oliver Cristian saavedra KOIKE Toshio RAHMAN Mafizur Dept.of Civil Eng. Univ.of TokyoBunkyo-kuTokyo 113-8656Japan. Dept.of Civil Eng. Bangladesh Univ.of Eng.and Technol.Dhaka-1000Bangladesh

＜正＞To improve global water resource assessment,quantification of the global river discharge while considering the effect of slopes is *** patterns need to be transformed into discharge by a distributed hydrological model（DHM）.The model is expected to represent the spatial variation in aspects of digital global mapping such land use,land cover,vegetation and ***,a digital elevation model（DEM） is crucial for tracking the flow direction and defining the river network in a *** this study,the performance of a 1 km resolution DHM is compared with that of a 90 m resolution DHM in simulating the discharge of the Meghna River in *** basin,which is poorly gauged,runs from the Assam and Tripura mountain regions of India to the metropolitan area of *** the Bangladeshi area of the basin,the slopes are very gentle and typical of flat plains,which make it difficult to represent the geomorphological characteristics with *** expected,the 1 km resolution model had more constraints in representing the actual river ***,using a national drainage map it was possible to improve the DEM hydrologically using geographic information system *** input rainfall was obtained from the Tropical Rainfall Measuring Mission（TRMM） 3B42 V6 products available almost globally at 0.25°spatial *** original TRMM data was improved using available rain gauges over Bangladesh. These correction factors were then also extended over *** simulated discharge was evaluated during a flood event at two stations:Zhakiganj at the intake of the upper Meghna River and Bhairab Bazar at the oudet of the models. In summary,the simulation of river discharge using the 1 km resolution model gave reasonable results even though the condition of the slope was ***,the procedure here shows the feasibility of developing global river discharge using global *** future development,after setting thresholds at different co

关键词： Asian water cycle initiative Bangladesh distributed hydrological model global mapping Meghna River river discharge TRRM ground validation

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