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Efficiency of sediment transport by flood and its control in the Lower Yellow River

Science China(Technological Sciences) 2004年第Z1期47卷 173-185页

作者： NI Jinren1, LIU Xiaoyong2. LI Tianhong1, ZHAO Ye’an3.& JIN Ling1 1. Department of Environmental Engineering, Peking University The Key Laboratory of water and Sedi- ment Sciences, ministry of Education, {2. 100871, China 2. general institute of water resources and hydropower planning and design, ministry of water re- sources,{13., China 3. The Yellow River Conservancy Commission, Zhengzhou 450003. China Department of Environmental Engineering Peking University Beijing China The Key Laboratory of water and Sediment Sciences Ministry of Education Beijing China general institute of {2. re{3. and hydropower planning and design Ministry of Water Resources Beijing China The Yellow River Conservancy Commission Zhengzhou China

This paper presents the characteristics of sediment transport by flood in the Lower Yellow River with the reach from Huayuankou to Gaocun, which is regarded as a typical braided pattern. The Artificial Neural Network Model on water Use for Sediment Transport (WUST) by flood was established based on the measured data from 1980 to 1998. Consequently, simulations of controlling process of sediment transport by flood were made in terms of the control theory under different scenarios. According to the situation of sediment transport by flood in the Lower Yellow River, Open-Loop control system and feedback control system were adopted in system design. In the Open-Loop control system, numerical simulations were made to reveal the relationship between average discharge of flood and the WUST with varying sediment concentrations. The results demonstrate that sediment concentration has significant influence on the controlling process of flood flow to WUST. It is practical and efficient to control WUST if sediment concentration is less than 2. kg/m3. In the feedback control system, controlling processes of sediment concentration and flood discharge for sediment transport were simulated respectively under given conditions, and it was found that sediment transport process could be controlled completely by sediment concentration and discharge at the inlet of the reach from Huayuankou to Gaocun. Using the same method, controlling processes of sediment transport by flood in other reaches in the Lower Yellow River were also simulated. For the case of sediment concentration being 2. kg/m3. the optimized controlling discharge ranges from 2.90 to 2.00 m3.s in the lower reach of Huayuankou. This study is also of significance to flood control and flushing sediment in the Lower Yellow River with proper operation modes of Xiaolangdi reservoir.

关键词： the Lower Yellow River, flood, sediment transport, efficiency, simulation, control.

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Node ordinal encoded genetic algorithm for the optimal allocation of water resources

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Progress in Natural Science:Materials International 2005年第5期15卷 448-452页

作者： YANG Xiaohua1*, YANG Zhifeng 1,2. SHEN Zhenyao1 and LI Jianqiang3.1. State Key Laboratory of water Environment Simulation, School of Environment, beijing Normal University, beijing 100875, China 2. Key Laboratory for water and Sediment Sciences ministry of Education, School of Environment, beijing Normal University, beijing 100875, China 3. water resources and hydropower planning and {13. {12. institute, MWR, beijing 100011, China) State Key Lab. of water Environ. Simulation Sch. of Environ. Beijing Normal Univ. Beijing 100875 China Key Lab. for water and Sediment Sci. Min. of Edu. Sch. of Environ. Beijing Normal Univ. Beijing 100875 China water resources and {2. {3. and design general Inst. MWR Beijing 100011 China

A new method, node ordinal encoded genetic algorithm (NOEGA), is proposed for solving water resources optimal allocation problems, in which the capacity of water resources is split into a number of smaller parts so that successive operations can be overlapped. Our objective is to maximize the whole benefit function. To overcome the “dimensionality and algorithm complexity curse” while searching for solutions and looking for an optimal solution, the operations of one-point crossover operator, gene exchange operator, gene random operator, gene shift operator and node ordinal strings are established. It is proved to be an effective optimal method in searching for global solutions. The NOEGA does not need a diversity of initial population, and it does not have the problem of immature convergence. The results of two cases show that using NOEGA to solve the optimal allocation model is very efficient and robust. In addition, the algorithm complexity of NOEGA is discussed.

关键词： water resources optimal allocation node ordinal code genetic algorithm.

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An ideal interval method of multi-objective decision-making for comprehensive assessment of water resources renewability

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Science China(Technological Sciences) 2004年第Z1期47卷 42-50页

作者： YANG Xiaohua1, YANG Zhifeng1,2. SHEN Zhenyao1 & LI Jianqiang3.1. School of Environment, State Key Laboratory of water Environment Simulation, beijing Normal Univer- sity, beijing 100875, China 2. School of Environment, Key Laboratory for water and Sediment Sciences of ministry of Education, beijing Normal University, beijing 100875, China 3. water resources and hydropower planning and {13. {12. institute, MWR, beijing 100011, China School of Environment State Key Laboratory of Water Environment Simulation Beijing Normal University Beijing 100875 China Key Laboratory for water and Sediment Sciences Beijing Normal University Ministry of Education Beijing 100875 China water resources and {2. {3. and design general institute MWR Beijing 100011 China

In order to estimate water resources renewability scientifically, an Ideal Interval Method of Multiple Objective Decision-Making (IIMMODM) is presented. This method is developed through improving an ideal point method of multiple objective decision-making. The ideal interval is obtained with assessment standard instead of ideal points. The weights are decided by using the basic point and gray code accelerating genetic algorithm. This method has synthesized the expert’s suggestion and avoided giving a mark for the objective again. It could solve the complicated problem of compatible or incompatible multi-objective assessment. The principle of IIMMODM is presented in this paper. It is used to assess the water resources renewability for nine administrative divisions in the Yellow River basin. The result shows that the water resources renewability in the Yellow River basin is very low. Compared with the gray associate analysis method, fuzzy synthesis method and genetic projection pursuit method, the IIMMODM is easier to use. Compared with the ideal point method of multiple objective decision-making, the IIMMODM has good robustness, which is applicable to the comprehensive assessments of water resources.

关键词： water resources renewability, comprehensive assessment, multiple objective decision-making,ideal interval, Yellow River basin.

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RAIN INTENSITY DISTRIBUTION IN THE SPLASH reGION OF ATOMIZED FLOW

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Journal of Hydrodynamics 2006年第3期18卷 362-366页

作者： DUAN Hong-dong LIU Shi-he LUO Qiu-shi HUANG Wei School of water resource and hydropower Wuhan University Wuhan 430072China water resources and {2. {3. and design general institute MWR Beijing 100011 China

Atomized flow is an unnatural two-phase flow produced while water discharges in water release structures. This flow might threaten the normal operation of hydraulic and hydroelectric installations owing to the unnatural and high-density rain as well as the unnatural and dirty mist. The splash region, the region with the highest rain intensity, hence should receive much attention during the {2. and operation of the hydraulic and hydroelectric installations. In this paper rain intensity distribution in the splash region of the atomized flow is investigated experimentally, and the method of random simulation is used to predict the rain intensity distribution in the splash region.

关键词： atomized flow splash rain intensity

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Characteristics,mechanism and development tendency of deformation of Maoping landslide after commission of Geheyan reservoir on the Qingjiang River,Hubei Province,China

Characteristics,mechanism and development tendency of deform...

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中国科学院地质与地球物理研究所2.06学术年会

作者： Shengwen Qi~a,Fuzhang Yan~b,Sijing Wang~a,Ruichun Xu~c a institute of Geology and Geophysics,CAS,beijing 10002.,PR China b {2. resources and hydropower planning and design general institute,MWR,beijing, 100011,PR China c Bureau of Investigation and Survey,Changjiang {2. resources Commission,Wuhan 43.010, PR China

Based on field investigation of the constituent structure and geological formation of the Maoping landslide,the authors made anin-depth study of the deformation characteristics and triggering mechanism of the reservoir-induced slide through comprehensive analysis of the about 13.years observation *** Maoping landslide,the largest ancient landslide in Geheyan reservoir,with a volume of 2..5 million m3.is located on the left bank of the Qingjiang River,66 km upstream of Geheyan *** April 1993.eservoir inundation reactivated the landslide,which resulted in relocation of a village of 2.0 *** then the landslide body has been experiencing persistent deformation with an observed maximum displacement of 2.41.4 mm up to October ***,further development of deformation of the landslide becomes a great concern for the safety of the reservoir and *** analysis results show that the Maoping landslide is an ancient landslide that is an accumulation of several consequent slides along the bank slope and experienced several secondary slumps in its front in later *** ongoing deformation of the reactivated landslide is controlled by mechanical properties of materials and hydraulic effects induced by *** slip process is of creep deformation as a whole,and appears to be attenuating in later stage,which indicates very low possibility of the high speed slip and integral failure of the slide.

关键词： reservoir-induced landslide Sliding mechanism Deformation mechanism Tendency prediction

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中国水利现代化和新水利理论的形成

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水资源保护 2003年第2期19卷 1-5页

作者：刘树坤中国水利水电规划设计总院北京100011

分析在 2.0世纪中 ,中国因大规模进行水利建设而带来的流域水循环短路化、绝缘化及生态系统的孤立化等问题。并以海河流域为例 ,阐述了目前流域社会难以实现可持续发展的理由。为保证中国水利的现代化 ,必须建立新水利理论 ,在传统水利... 详细信息

分析在 2.0世纪中 ,中国因大规模进行水利建设而带来的流域水循环短路化、绝缘化及生态系统的孤立化等问题。并以海河流域为例 ,阐述了目前流域社会难以实现可持续发展的理由。为保证中国水利的现代化 ,必须建立新水利理论 ,在传统水利理论的基础上 ,综合考虑技术、经济、环境、生态、社会等对水系影响较大的因素 ,重新定位水利在流域可持续发展中的地位和建设目标 ,以流域为整体 ,以流域社会可持续发展为规划目标 ,不断完善新水利理论。

关键词：水利建设流域规划生态系统可持续发展水资源综合管理

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蚁群加速遗传算法在水环境优化问题中的应用

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水电能源科学 2003年第4期21卷 42-45页

作者：杨晓华杨志峰郦建强北京师范大学水环境模拟国家重点实验室北京100875 水利部水利水电规划设计总院北京100011

提出了水环境优化问题的一种新方法——蚁群加速遗传算法,给出了实施该算法的详细步骤。并对新方法的收敛性和全局优化性进行了理论和实例分析,在污水处理模型的参数识别问题中,新方法得到了精度较高的全局最优解。新方法具有精度高、... 详细信息

提出了水环境优化问题的一种新方法——蚁群加速遗传算法,给出了实施该算法的详细步骤。并对新方法的收敛性和全局优化性进行了理论和实例分析,在污水处理模型的参数识别问题中,新方法得到了精度较高的全局最优解。新方法具有精度高、速度快和鲁棒性强等特点,是一种既可以较大概率搜索全局最优解,又能进行局部细致搜索的较好的非线性优化方法,可广泛应用于各种水环境优化问题中。

关键词：蚁群算法遗传算法水环境优化蚁群加速遗传算法污水处理模型

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从运行情况谈混凝土面板坝的设计与施工

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西北水电 2002年第3期 17-21页

作者：刘世煌许百立水利部水利水电规划设计总院北京100011

从沟后、西北口、天生桥、成屏、株树桥、天荒屏、鱼背山、小梅沙以及国外某些混凝土面板坝的运行情况 ,探讨混凝土面板坝的设计与施工有关问题。

关键词：混凝土面板坝设计施工沉降挠曲裂缝渗漏水力过渡运行

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不同承载标准下水资源承载力评价

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水科学进展 2018年第1期29卷 31-39页

作者：金菊良董涛郦建强张礼兵李辉合肥工业大学土木与水利工程学院安徽合肥230009 合肥工业大学水资源与环境系统工程研究所安徽合肥230009 水利部水利水电规划设计总院北京100011

为解决水资源承载力随水资源承载支撑力、承载压力和承载调控力不同而变化的问题,在探讨水资源承载力理论、特征和影响因素的基础上,分析水资源承载支撑力、承载压力和承载调控力系统,建立水资源承载力评价指标体系。同时,从承载标准的... 详细信息

为解决水资源承载力随水资源承载支撑力、承载压力和承载调控力不同而变化的问题,在探讨水资源承载力理论、特征和影响因素的基础上,分析水资源承载支撑力、承载压力和承载调控力系统,建立水资源承载力评价指标体系。同时,从承载标准的角度,考虑承载主体不同保证率下的水资源可利用量和承载客体不同的承载水平,建立不同承载标准下的区域水资源承载力评价模型;并应用该模型计算陕西省在不同供水保证率和不同承载水平下的水资源可承载人口和经济,评价结果可为陕西省水资源合理配置提供重要参考。应用结果表明该区域水资源承载力评价模型在不同承载标准下计算简单、适用性强,有很好的应用效果。

关键词：水资源承载力评价承载标准供用水量平衡承载水平用水定额陕西省

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