Advances and Prospects of Reservoir Sedimentation Problem on Sediment-Laden River

2013 ◽  
Vol 405-408 ◽  
pp. 2104-2114
Author(s):  
Guo Ming Gao ◽  
Tao Li ◽  
Zhe Liu ◽  
Xiao Juan Li
Keyword(s):  
Reservoir Operation ◽  
Yellow River ◽  
Research Process ◽  
Reservoir Sedimentation ◽  
Reservoir Sediment ◽  
Sediment Treatment ◽  
Sediment Research

Reservoir sediment problem on sediment-laden river is the main puzzle problem in reservoir operation. Reservoir sedimentation, reservoir operation, reservoir sediment treatment and utilization and simulation of reservoir are analyzed in the paper. Difficulty is also provided during the research process. And reservoir sediment research on Yellow River is prospected. The paper can be helpful to provide the basis for reservoir sediment problem on sediment-laden river, and also point out the direction of reservoir sediment research on Yellow River.

Acute impacts of reservoir sediment flushing on fishes in the Yellow River

2016 ◽  
Vol 13 ◽  
pp. 26-35 ◽  
Author(s):  
Baiyin Baoligao ◽  
Fengran Xu ◽  
Xingru Chen ◽  
Xiuying Wang ◽  
Wenxue Chen
Keyword(s):  
Yellow River ◽  
The Yellow River ◽  
Reservoir Sediment ◽  
Sediment Flushing

scholarly journals A study on the characteristics and influencing factors of reservoir sedimentation in Wanjiazhai Reservoir

2018 ◽  
Vol 246 ◽  
pp. 01046
Author(s):  
Zhihui Ren ◽  
Ting Wang ◽  
Yuanjian Wang ◽  
Shaojun Qu
Keyword(s):  
Water Level ◽  
Reservoir Operation ◽  
Temporal Distribution ◽  
Measured Data ◽  
Sediment Deposition ◽  
Reservoir Sedimentation ◽  
Spatial And Temporal Distribution ◽  
Timely Manner ◽  
Reservoir Area ◽  
The Impact

Based on measured data of the Wanjiazhai Reservoir in different periods, the characteristics of the spatial and temporal distribution of sedimentation in the reservoir area were preliminarily analyzed and the impact of reservoir operation on this distribution was discussed. Primary conclusions are as followed: in terms of temporal distribution, sedimentation continuously accumulated over the period from 2000 to 2017, with the sediment deposition ratio dramatically decreasing between 2011 and 2017; in terms of spatial distribution, the sedimentation in the reservoir area was mainly concentrated downstream of the WD54 section, with the highest concentration being downstream of the WD23 section. The characteristics of sedimentation distribution in the reservoir area were closely related to inflow and sediment conditions and reservoir operation water level. When the water level was lower than 952 m, the sediment deposition ratio was lower than 0. To further improve the sediment deposition form in the reservoir area, lowering water level and ejecting the sediment are recommended in a timely manner.

Ice regime variation impacted by reservoir operation in the Ning-Meng reach of the Yellow River

2015 ◽  
Vol 80 (2) ◽  
pp. 1015-1030 ◽  
Author(s):  
Jianxia Chang ◽  
Xuebin Wang ◽  
Yunyun Li ◽  
Yimin Wang
Keyword(s):  
Reservoir Operation ◽  
Yellow River ◽  
The Yellow River ◽  
Ice Regime

scholarly journals Recovery Degree of the Natural Flow Regimes and the Corresponding Economic Costs for Reservoir Operation in Fish Spawning Seasons

2019 ◽  
Vol 16 (10) ◽  
pp. 1699
Author(s):  
Cong-Min Liu ◽  
Jun Qiu ◽  
Fang-Fang Li
Keyword(s):  
Reservoir Operation ◽  
Economic Benefit ◽  
Large Scale ◽  
Yellow River ◽  
Flow Regimes ◽  
Hydropower Generation ◽  
Flow Process ◽  
Natural Flow ◽  
Fish Spawning ◽  
Natural Flow Regimes

The construction of large-scale reservoirs alters the natural flow process downstream and inevitably affects the aquatic organism. Current studies have verified that flow regimes play an important role in fish spawning stimulus. Recovery of the flow regimes may be incompatible with the economic benefit, mainly referring to hydropower generation. In this study, multiple models are established to study the relationship between the recovery degree of the natural flow regimes and the cost of the hydropower generation in spawning season for different hydrological years. The flow regimes are first quantitatively described by three characteristic parameters including the number of floods, the average duration of each flood, and the daily increment of the natural flow. The model for ecological operation needs to approach these characteristics as close as possible, while the model for economic benefit is set to generate power as much as possible. The ecological flow constraint is also considered to shape the flow process pattern. The proposed methodology is applied on the upper reaches of the Yellow River, where a large-scale reservoir is under planning. Different schemes are compared for different hydrological years to answer the question that to what extent can we recover the flow regime by reservoir operation, and how much the corresponding economic cost is.

scholarly journals Continuous Seasonal and Large-Scale Periglacial Reservoir Sedimentation

2018 ◽  
Vol 10 (9) ◽  
pp. 3265 ◽  
Author(s):  
Daniel Ehrbar ◽  
Lukas Schmocker ◽  
Michael Doering ◽  
Marco Cortesi ◽  
Gérald Bourban ◽  
...  
Keyword(s):  
Reservoir Operation ◽  
Large Scale ◽  
Numerical Models ◽  
Management Strategies ◽  
Field Measurements ◽  
Sediment Concentration ◽  
Turbidity Currents ◽  
Reservoir Sedimentation ◽  
Delta Formation ◽  
Sedimentation Processes

Sustainable reservoir use is globally threatened by sedimentation. It has been generally recognized that inadequate consideration of reservoir sedimentation has caused the worldwide decline of net storage. Numerical models are useful tools to simulate sedimentation processes and can be used to derive efficient counter-measures and sediment management strategies. They can be applied to both existing and potential future reservoirs to predict long-term sedimentation. In this study, an application of a simple, robust, and stable numerical 1D model to Gebidem reservoir in Switzerland accompanied by field measurements is presented. It focusses on seasonal and large-scale reservoir sedimentation processes that occur continuously throughout the whole deposition season, while episodic events like turbidity currents are not taken into account. The model simulates both the delta formation of coarse sediments and the lake-wide sedimentation from homopycnal flows. The model is used to assess the effects and significance of varying boundary conditions like inflow, suspended sediment concentration, particle size distribution (PSD), or reservoir operation. It will be demonstrated that future reservoir operation and PSD are as important as future runoff evolution. Based on these findings, implications on future reservoir operation, also considering climate change, are discussed. Finally, an outlook on pending research topics is given.

Projecting a European Diploma in Psychology

2002 ◽  
Vol 7 (3) ◽  
pp. 221-224 ◽  
Author(s):  
Bernhard Wilpert
Keyword(s):  
Research Process ◽  
Project Team ◽  
Future Research ◽  
Research Results ◽  
External Constraints ◽  
Internal Procedures ◽  
The Eu

The paper presents an inside evaluation of the EuroPsyT project, funded by the EU Leonardo Program in 1999-2001. While standard research usually neglects to reflect on the internal and external constraints and opportunities under which research results are achieved, the paper stresses exactly those aspects: starting from a brief description of the overall objectives of the 11 countries project, the paper proceeds to describe the macro-context and the internal strengths and weaknesses of the project team, the internal procedures of cooperation,. and obstacles encountered during the research process. It winds up in noting some of the project's achievements and with a look towards future research.

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