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Comprehensive benefit of flood resources utilization through dynamic successive fuzzy evaluation model: A case study

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中国科学：技术科学英文版 2010年第2期53卷 529-538页

作者： FENG Feng1,2, XU ShiGuo1, LIU JianWei1, LIU Dan1,3 & WU Bo4 1 institute of Water Environment, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, china 2 yellow river conservancy technical institute, kaifeng 475003..china 3 College of Water Resources, Shenyang Agricultural University, Shenyang 110161, china 4 Office of Flood Control and Draught Relief in Jilin Province, Changchun 130033, china 1. institute of Water Environment School of Civil and Hydraulic Engineering Dalian University of Technology Dalian 116024 China2. Yellow River Conservancy Technical Institute Kaifeng 475003 China3. College of Water Resources Shenyang Agricultural University Shenyang 110161 China4. Office of Flood Control and Draught Relief in Jilin Province Changchun 130033 China

Taking the flood resources utilization in Baicheng, Jilin during 2002–2007 as the research background, and based on the entropy weight and multi-level & multi-objective fuzzy optimization theory, this research established a multi-level & semi-constructive index system and dynamic successive evaluation model for comprehensive benefit evaluation of regional flood resources utilization. With the year 2002 as the base year, the analyzing results showed that there existed a close positive correlation between flood utilization volume and its benefits, comprehensive evaluation value and its comparison increment. Within the six successive evaluation years, the comprehensive benefit of 2003 was the best, in which the benefit evaluation increment reached 82.8% whereas the year of 2004 was the worst, in which the increment was only 18.2%. Thus the sustainability and correctness of the evaluation were verified by six years successive evaluation and increment comparison. The analyzing results showed that the economic benefits, ecological benefits and social benefits of flood utilization were remarkable, and that the comprehensive benefit could be improved by increasing flood utilization capacity, which would promote the regional sustainable development as well. The established dynamic successive evaluation provides a stable theoretical basis and technical support for further flood utilization.

关键词： flood resources utilization comprehensive benefit dynamic successive fuzzy evaluation Baicheng City

Vocational Teaching Cube System of Engineering Graphics

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CADDM 2003年第Z1期 61-65页

作者： Yang Daofu 1 Liu Shenli2 1yellow river conservancy technical institute, kaifeng 475001, china 2Zhengzhou institute of Light Industry, Zhengzhou 450002, china

Based on long-time research on vocational teaching cube theory in graphics education and analyzing on the intellectual structure in the process of reading engineering drawing, the graphics intellectual three-dimensional model, which is made up of 100 cubes, is founded and tested in higher vocational graphics education. This system serves as a good guidance to the graphics teaching.

关键词： vocational education graphics intelligence 100 cubes theoretical model teaching system

Efficiency of sediment transport by flood and its control in the Lower yellow river

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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, Beijing 100871, china 2. General institute of Water Resources and Hydropower Planning and Design, Ministry of Water Re- sources, Beijing 100011, china 3. The yellow river conservancy Commission, Zhengzhou 450003, china 1. Department of Environmental Engineering Peking University 100871 Beijing China 2. The Key Laboratory of Water and Sediment Sciences Ministry of Education 100871 Beijing China 3. General institute of Water Resources and Hydropower Planning and Design Ministry of Water Resources 100011 Beijing China 4. The yellow river conservancy Commission 450003 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 20 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 20 kg/m3, the optimized controlling discharge ranges from 2390 to 2900 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.

ON　CALCULATIONS　OF　THE　DRAG　COEFFICIENT　Cd　AND　THE　FALL　VELOCITY　ω　OF　SPHERICAL　BODIES

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Journal of Hydrodynamics 1994年第4期6卷 16-27页

作者： Xiang Zhao-fa (institute of Estuary and Coastland, yellow river conservancy Commission, Jinan, Shandong 250100,P. R. china)

A host of authors have proposed some theoretical and experimental formulas in hydromechanics concerning the calculation of the drag coefficient Cd of spherical bodies. But all of the existing Cd formulas hold true only at small Reynolds numbers and are restricted within certain flowing *** regards the fall velocity ω of spherical bodies, there is yet no formula applicable to each flowing range and to a direct expression and calculation of the fall velocity ω.In view of these, from N-S equations, and meanwhile based on measured data and complicated calculations, the author has developed and proposed the following results:(1) The drag coefficient (2) The dimensionless fall velocity where Es, Ω* and constants etc. are indicated in detail in this *** laborious calculation in lgRe2) convenient for general use, (3) preferable on the part of the precision and ***, to introduce this process and to illustrate the temperature effects on the fall velocity ω, some examples are discussed in this paper.

关键词： drag coefficient fall velocity spherical body numerical calculated formula.

SIZE DISTRIBUTIONS OF COARSE SAND BED LOAD IN TURBULENT FLOW FIELD

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Journal of Hydrodynamics 1995年第3期7卷 1-6页

作者： Zhang Hong-wu Wang Shan(institute of Hydraulic Research yellow river conservancy Commissivn,Zhengzhou 450003,P.R.china)

Putting forth effort on analyzing the action of turbulent flow on the sand particles on rvier bed surface,in this paper, the interdependent relation between the size distribution of coarse sand bed load and flow stren... 详细信息

关键词： coarse sand bed size distributions turbulent flow

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 conservancy and Hydropower,Zhengzhou 450008,china 4 china institute of Water Resources and Hydropower Research,Beijing 100038,china 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 conservancy and Hydropower Zhengzhou 450008 China 4. china institute of Water Resources and Hydropower Research Beijing 100038 China

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 complex in the gullied Loess Plateau, a region notorious for high intensity soil erosion and hyper-concentrated 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 contributing 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-concentrated flow contribute 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-concentrated sediment-laden flow the Loess Plateau

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高校职业实用性体育教学内容的构建

体育学刊 2008年第7期15卷 74-75页

作者：徐志刚黄河水利职业技术学院河南开封475001

高校体育是学校体育的最后一个阶段,而且学生求学的专业和未来的职业要求不同对高校体育教学提出了新的挑战。高校体育应加强职业实用性体育教学内容的探索与实践。根据各职业类型的要求尝试构建了有针对性的体育教学内容,强调职业实用... 详细信息

高校体育是学校体育的最后一个阶段,而且学生求学的专业和未来的职业要求不同对高校体育教学提出了新的挑战。高校体育应加强职业实用性体育教学内容的探索与实践。根据各职业类型的要求尝试构建了有针对性的体育教学内容,强调职业实用性体育应该突出实用性、合理性、终身性。

关键词：高校体育职业教育体育教学终身体育

On the variation of water resource structure in the Lower yellow river

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Science china(Technological Sciences) 2004年第z1期47卷 127-141页

作者： NI Jinren1, WANG Yudong1, QIAN Zhenghan1, LI Tianhong1 & ZHAO Yean2 1. Department of Environmental Engineering, Peking University The Key Laboratory of Water and Sedi- ment Sciences, Ministry of Education, Beijing 100871, china 2. institute of Hydraulic Research, yellow river conservancy Commission, Zhengzhou 450003, china 1. Department of Environmental Engineering Peking University 100871 Beijing China2. The Key Laboratory of Water and Sediment Sciences Ministry of Education 100871 Beijing China3. Institute of Hydraulic Research YellowRiver Conservancy Commission 450003 Zhengzhou China

In view of river functions and the Minimum Water Demand for river Ecosystem (MWDRE), the water resources in the Lower yellow river is further divided into three portions, i.e. water available for ecosystem (WE), water exploitable for socioeconomic purposes (WS) and excess flood water (WF). Corresponding conceptions and practical significances are expounded in details. The annual amount of the three portions of water resources from 1950 to 2001 is worked out on the basis of the daily hydrologic data, and the division of different portions is discussed. The results indicate that although the essential water demand for river functions is considered preferentially, the amount of the WE has decreased dramatically while its proportion increased gradually since the 1950s, and the shortage to the MWDRE increased markedly; both the amount and the proportion of the WS decreased notably. Since the 1990s, the actual water consumption for socioeconomic purposes in the lower reaches of the river basin has already exceeded the maximum amount of the WS and has to take over the WE which is already insufficient, hence not only the normal river functions are further disturbed and the river course shrinks greatly, but also the proportion and potential danger of the WF show no decreasing tendency in spite of the sharp decrease of upstream runoff.

关键词： the yellow river, water resource structure, water available for ecosystem, water exploitable for socioeconomic purposes, excess flood water.

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 College of Water conservancy 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 Control Engineering Research Center of MWR,Zhengzhou 450003,china 1. College of Water conservancy 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 Control Engineering Research Center of MWR Zhengzhou 450003 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 *** concept 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 constructed combined with impact factors of reservoir bank landslide on dam *** the assessment function of landslide risk has been excavated and established according 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