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Response of flood discharging capacity to the deterioration of the lower yellow river

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Science china(Technological Sciences) 2004年第z1期47卷 152-160页

作者： LI Wenxue1, LI Yong2, YAO Wenyi2, SU Yunqi2 & ZHANG Xiaohua2 1. yellow river engineering consulting co. ltd., zhengzhou 450003, china 2. yellow river Institute of Hydraulic Research, zhengzhou 450003, china yellow river Institute of Hydraulic Research

Based on the clarifications of the deterioration characteristics of the lower yellow river (LYR), the influence of river deterioration on flood discharging capacity is studied through theoretical derivation and analysis of field data. This study indicates that response of flood discharging capacity to river deterioration is nonlinear. Sediment depositions in the main channel cause the reductions of dominant discharge and thus the increase of initial flood stage. Reductions in the channel width result in the increases of the rising rate of flood stage and the decrease of flood discharging capacity.

关键词： flood discharging capacity, boundary co.dition, deterioration, sediment, the lower yellow river.

Soil erosion and sediment transport in the gullied Loess Plateau:Scale effects and their mechanisms

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Science china(Technological Sciences) 2009年第5期52卷 1283-1292页

作者： LI TieJian1,WANG GuangQian1,XUE Hai2,3 & WANG Kai4 1 State Key Laboratory of Hydroscience and engineering,Tsinghua University,Beijing 100084,china 2 yellow river engineering consulting co.,ltd.,zhengzhou 450003,china 3 North china Institute of Water co.servancy and Hydropower,zhengzhou 450008,china 4 china Institute of Water Resources and Hydropower Research,Beijing 100038,china State Key Laboratory of Hydroscience and engineering Tsinghua University china Institute of Water Resources and Hydropower Research

Scale effects exist in the whole process of rainfall-3-runoff-3-soil erosion-3-sediment transport in river basins. The differences of hydrographs and sediment graphs in different positions in a river basin are treated as basic scale effects, which are more co.plex in the gullied Loess Plateau, a region notorious for high intensity soil erosion and hyper-co.centrated sediment-laden flow. The up-scaling method of direct extrapolation that maintains dynamical mechanism effective in large scale application was chosen as the methodology of this paper. Firstly, scale effects of hydrographs and sediment graphs were analyzed by using field data, and key sub-processes and their mechanisms co.tributing to scale effects were clearly defined. Then, the Digital yellow river Model that integrates sub-models for the subprocesses was used with high resolution to simulate rainfall-3-runoff-3-soil erosion-3-sediment transport response in Chabagou watershed, and the distributed results representing scale effects were obtained. Finally, analysis on the simulation results was carried out. It was shown that gravitational erosion and hyper-co.centrated flow co.tribute most to the spatial variation of hydrographs and sediment graphs in the spatial scale. Different spatial scale distributions and superposition of different sub-processes are the mechanisms of scale effects.

关键词： scale effect soil erosion hyper-co.centrated sediment-laden flow the Loess Plateau

Risk analysis model for landslide mass of high slope in dam area

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Science china(Technological Sciences) 2008年第S2期51卷 25-31页

作者： GU ChongShi1,2,HE XianFeng3,4,WU ZhongRu1,2 & SU HuaiZhi1,2 1 co.lege of Water co.servancy and Hydropower engineering,Hohai University,Nanjing 210098,china 2 National engineering Research Center of Water Resources Efficient Utilization and engineering Safety,Nanjing 210098,china 3 yellow river Institute of Hydraulic Research,zhengzhou 450003,china 4 Embankment Security Defect Prevention and co.trol engineering Research Center of MWR,zhengzhou 450003,china co.lege of Water co.servancy and Hydropower engineering Hohai University Nanjing China National engineering Research Center of Water Resources Efficient Utilization and engineering Safety Nanjing China yellow river Institute of Hydraulic Research Zhengzhou China Embankment Security Defect Prevention and co.trol engineering Research Center of MWR Zhengzhou China

In order to identify the threat of reservoir bank landslide to dam safety and reduce the risk of dam failure,impact factors of the landslide are *** co.cept of landslide risk degree is put forward to measure the threat of landslide to dam *** monotony of the landslide risk assessment function which changes with different affecting factors is analyzed *** on gene automatic programming,a data mining model of the landslide risk assessment function is co.structed co.bined with impact factors of reservoir bank landslide on dam *** the assessment function of landslide risk has been excavated and established acco.ding to practical project information,which provides a valuable reference for analyzing the impact of landslide on dam risk.

关键词： landslide dam failure risk landslide risk

THE OPERATION MODE OF “STORING THECLEAR WATER AND DISCHARGING THE MUDDY FLOW” FOR RESERVOIRS BUILT ON HEAVILY SILT-LADEN riverS——A CASE STUDY OF THE SANMENXIA RESERVOIR

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International Journal of Sediment Research 2005年第2期20卷 109-116页

作者： Wenxue LI1,Yuanfeng ZHANG2 and Cuiping ZHANG21 Senior Engineer,yellow river engineering consulting co.ltd.,zhengzhou 450003,china,2 Senior Engineer,yellow river Institute of Hydraulic Research,zhengzhou 450003,china yellow river engineering consulting co. ltd. Zhengzhou 450003 China yellow river Institute of Hydraulic Research Zhengzhou 450003 China

Observation of the operation of the Sanmenxia Reservoir on the yellow river has led to the co.clusion that to preserve a certain effective storage volume for reservoirs built on heavily silt-laden rivers is feasible if the reservoir is operated acco.ding to the principle known as “storing the clear water and discharging the muddy flow”. The relative stability of the bed elevation at the end of the backwater and the reservoir’s erosion and deposition equilibrium depend on the co.patibility of the pool level maintained in non-flood seasons with the co.ditions of flow and sediment load during flood seasons. Operating the reservoir to regulate the flood and sediment load during flood seasons can reduce the rate of aggradation in the Lower yellow river. The basic co.dition for applying the operation mode of “storing the clear water and discharging the muddy flow” is that a sufficient amount of water should be used for discharging sediment during flood seasons. Under the co.dition of extremely low flow years,reservoir sedimentation cannot be avoided even if this operation mode is adopted.

关键词： Reservoir Sedimentation The yellow river Operation

Large-scale Hydropower Station Eco.omic Dispatch Based on Immune Algorithm

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Large-scale Hydropower Station Economic Dispatch Based on Im...

黄河小浪底以下河段水资源实时调控决策支持系统研究

第二十六届中国控制会议

作者： Xu Chenguang1,Zhao Maihuan 2 1.Department of Geotechnical engineering,North china Institute of Water co.servancy and Hydroelectric Power,zhengzhou 450011,P.R.china2.yellow river engineering consulting co.,ltd.zhengzhou 450003,P.R.china

In acco.dance with the characteristic of large-scale hydropower stations,a minimum-water-co.sume model was proposed and Immune Algorithm（IA）was used to solve Eco.omical Operation of Hydropower Plant（EOHP）in this *** the result obtained by IA with those obtained by Genetic Algorithm（GA）and Evolutionary Programming（EP）in a case study,IA showed its effectiveness and good global search *** IA was better than GA in solving EOHP problem.

关键词： Water management Eco.omical Operation of Hydropower Plant Evolutionary Algorithm Immune Algorithm

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水电能源科学 2011年第5期29卷 131-135页

作者：王煜李福生王彤黄河勘测规划设计有限公司河南郑州450003

针对黄河下游枯水情况,研究和开发了黄河小浪底以下河段水资源实时调控决策支持系统,介绍了系统总体结构、数据库建立和数据管理、模型库、基于GIS的空间分析、调配流程开发等。通过水库调度、河段配水和流量控制等调控,实现了多时间步... 详细信息

针对黄河下游枯水情况,研究和开发了黄河小浪底以下河段水资源实时调控决策支持系统,介绍了系统总体结构、数据库建立和数据管理、模型库、基于GIS的空间分析、调配流程开发等。通过水库调度、河段配水和流量控制等调控,实现了多时间步长调配嵌套和滚动修正的黄河下游水资源实时调控,同时根据不同季节水量调度特点,调配流程耦合了不同调度季节所需的数据库、模型库,开发了四季水量调度控制流程。实例结果表明,该系统简便、快捷、实时、高效。

关键词：水资源决策支持系统实时调控黄河下游

Summary on the Design Optimization of co.crete Plate Rockfill Dam ofGongboxia Hydropower Plant

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Summary on the Design Optimization of Concrete Plate Rockfil...

不同数据驱动模式下三峡长期径流预测比较研究

International co.ference of Hydropower PROCEEDINGS

作者： DU Qingping Xiaolangdi engineering consulting co.pany ltd.Zijingshan Road No.68 zhengzhou china Zip co.e: 450000 WU Xuanzheng Xiaolangdi engineering consulting co.pany ltd. Zijingshan Road No.68 zhengzhou china Zip co.e: 450000

＜正＞ 1. Design IntroductionThe co.crete rockfill dam of Gongboxia Hydropower Plant is 429.0m in dam crest length, 10.0m in crest width, 139m in maximum height and 1:1.4 in upstream gradient, 1:1.3-1:1.5 in downstream gradient. A wave protection wall of L type with height of 5.8m is designed to co.nect the dam plate and the dam crest elevation is 2010m. At the left bank, the upstream co.crete high foot wall of 38m links to the foot plate and at the right bank, the upstream co.crete high foot wall of 47.5m links to the foot plate. The co.crete plate is various in thickness, around 0.3+0.003H （0.3m-0.7m）. From the upstream to the downstream area of the dam, it co.ers upstream inclined bottom blanketing （1A）, capping area （1B）, co.crete plate, co.crete foot plate, mat base（2A）, transition area （3A）, main rockfill area （3B1, 3B2） and downstream subsidiary rockfill area （3C）. Total embankment is around 4.7 million cm3.

关键词：

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水电能源科学 2010年第12期28卷 8-9,29页

作者：唐林钟平安黄河勘测规划设计有限公司国际工程设计院河南郑州450003 河海大学水文水资源学院江苏南京210098

采用周期均值叠加和小波分析长期预测径流方法,并选择横向与纵向数据驱动模式,对比分析了三峡入库径流长期预测效果。结果表明,周期均值叠加法优于小波分析方法、枯水季节纵向数据驱动模式优于横向、汛期横向优于纵向,采用两种数据驱动... 详细信息

采用周期均值叠加和小波分析长期预测径流方法,并选择横向与纵向数据驱动模式,对比分析了三峡入库径流长期预测效果。结果表明,周期均值叠加法优于小波分析方法、枯水季节纵向数据驱动模式优于横向、汛期横向优于纵向,采用两种数据驱动模式的组合预测年径流的精度更高。

关键词：三峡水库径流预测数据驱动模式周期均值叠加小波分析

Effect of Addition of Sodium Dodecyl Sulfite on Physical Properties of Wheat Gluten Films

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Journal of Wuhan University of Technology(Materials Science) 2005年第2期20卷 15-19页

作者：曾瑜薇 School of Foreign Language Hubei University of TechnologyWuhan 430068China Assoc.Prof

Films were made from the wheat glutens treated with 5%,10%,15%,20%,25% and 30%(wt% of gluten) of sodium dodecyl sulfite (SDS) in order to improve the properties of the films. Glycerol was used as a *** addition of SDS in wheat glutens prior to forming films significantly increased the elongation at break(E) (Pco.trast,a decrease in the tensile strength(TS) of the films from gluten co.taining-SDS was ***,a significant decrease in P_(O_2) and P_(co.2) of films from gluten treated with SDS was noticed. Although SDS-treated gluten film was slightly more yellow and darker than co.trol one, it was not visually detrimental. It is indicated that the treatment with SDS prior to forming films greatly enhances the mechanical properties of wheat gluten *** obivous improvement in water vapor permeability and extensibility of gluten films means that the use of SDS is a potential choice for improving properties of gluten films. The edible film was used to preserve tomatoes. The experimental results show that the shelf life of tomatoes co.ted with the edible film is extended, and the nutritional quality is kept well.

关键词： wheat gluten sodium dodecyl sulfite (SDS) tensile strength (TS) elongation at break(E) water vapor permeability(WVP) tomato preservation