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COUPLING EFFECT OF SEEPAGE FLOW AND RIVER FLOW ON THE BANK FAILURE

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Journal of Hydrodynamics 2011年第6期23卷 834-840页

作者： NING Bo WU- Shi-qiang TAN Ye-fei XIE Xing-hua YAN Jun YAN Zhong-min GENG Yan-qiong College of water conservancy and hydropower Engineering Hohai University Nanjing 210098 China Nanjing Hydraulic Research institute Nanjing 2100-29 China Nanjing Hydraulic Research institute.Nanjing 210029 China Lian Yungang Technical College Lian Yungang 222000 China

On the basis of the generalized physical model of the riverbank, the experiments were conducted to study the mechanisms of riverbank failure under the coupling effect of seepage flow and river flow. The experimental setup was specially designed, as well as test point location, parameters and procedures, and the main influencing factors were analyzed affecting riverbank failure based on the failure types, the variations of pore water pressure and soil displacement. The results indicated that the coupling effect has different influences on the bank failure in three aspects： the failure type, the process and the extent. In addition, the river flow played a more important role than the seepage flow in the coupling effect on the bank failure.

关键词： bank failure seepage flow river flow physical model test

基于测点位移差的中、下承式拱桥吊杆损伤识别

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中国公路学报 2012年第1期25卷 83-88页

作者：陈淮何伟何容郑州大学土木工程学院河南郑州450001 华北水利水电学院土木与交通学院河南郑州450011

根据摄动有限元法原理,提出了基于测点间位移差的变化进行吊杆损伤识别的方法。进行吊杆损伤识别时,先测试吊杆节点间的高程差,并减去损伤前相同2个节点竖向位移差,得到吊杆损伤后2个节点竖向位移差的变化;再通过节点竖向位移差的变化... 详细信息

根据摄动有限元法原理,提出了基于测点间位移差的变化进行吊杆损伤识别的方法。进行吊杆损伤识别时,先测试吊杆节点间的高程差,并减去损伤前相同2个节点竖向位移差,得到吊杆损伤后2个节点竖向位移差的变化;再通过节点竖向位移差的变化构成吊杆损伤识别方程;当损伤识别初定方程和确定方程识别结果基本一致时,即判定吊杆发生损伤,并取2个方程所得吊杆损伤程度均值作为损伤程度;最后,以京珠高速郑州黄河二桥主桥为例验证了该方法。结果表明:采用该方法进行吊杆损伤识别,识别结果精度较高,即使对于小程度损伤也可识别,且测量误差对识别结果影响较小。

关键词：桥梁工程中、下承式拱桥测点位移差损伤识别吊杆

Curved and Stepped Breakwater Wall

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china Ocean Engineering 1996年第4期11卷 489-494页

作者： Cheng Yuping Senior Engineer (Vice Chief Engineer), Guangdong Scientific Research institute of water conservancy and hydropower, Guangzhou 510610 Guangdong Scientific Research Inst. Water Conserv. and Hydropower Guangzhou 510610

-This paper introduces the main points of design and operation features of a curved combinative breakwater wall which can not only resist storm surge but also roll wave back and which has the functions of seawall, tide protection, anti-wave, land development, traffic and tourism. The new kind of breakwater optimized by wave model test has been utilized in the seawall in the coast regulation project in Zhanjiang City, and good results have been achieved.

关键词： swirling wave curved complex with step breakwater

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.

AN ANALYTICAL FORMULA FOR CALCULATING water HAMMER IN CONDUIT OF HYDRAULIC TURBINE

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Chinese Science Bulletin 1980年第3期25卷 248-254页

作者：段昌国 Beijing Graduate Research Division North China Institute of Water Conservancy and Hydropower Engineering

When the phase number of the water hammer wave is greater than 4—6, we generally adopt the rigid water column theory. Based on this theory, Allievi has given a formula to solve the water hammer for uniform gate closu... 详细信息

关键词： hammer inconsistent closure adopt rigid fitting instant pipe turbine hydraulic

Design on the Supervisory Control and Data Acquisition System for Longnan water Corporation

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Design on the Supervisory Control and Data Acquisition Syste...

Autonomous Underwater Vehicle Navigation Using an Adaptive Kalman Filter for Sensor Fusion

2010 2nd IEEE International Conference on Advanced Management Science（IEEE ICAMS 2010）

作者： Xin Ma School of Management and Economic north china University of water conservancy and Electric Power zhengzhou china 450011

Modern management system consisted by electronic communication technology and comprehensive automation technology is important for water enterprise because the water dispatched model is high timely demand, distribution, network and variables. The supervisory control and data acquisition （SCADA） system is an advanced technology to solve the signal collection and transformation problem from up point to down points in order to automatic control and dispatch the water enterprise. A new SCADA system is designed for Longnan water corporation based on Ethernet and remote terminal unit （RTU）. The entire data acquisition and control integration in water treatment process can be effectively implemented through application of the SCADA system.

关键词： water supply SCADA system Ethernet RTU

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Autonomous Underwater Vehicle Navigation Using an Adaptive K...

第二十九届中国控制会议

作者： ZHANG Tao School of Mechanical Engineering,north china institute of water conservancy and Hydroelectric Power,zhengzhou,450011,P.R.china

In order to improve the navigation accuracy of an autonomous underwater vehicle,a terrain passive integrated navigation system,which consists of strapdown inertial navigation system,underwater terrain map,bathometer,magnetic compass and doppler log is *** the integrated system,the position measure equation of terrain match algorithm is as measurement equation,which adding to the doppler velocity measure equation and magnetic compass course measure *** the parameters are estimated using UD factorization-based adaptive kalman filter,which adjust the measure noise to suit change of measure course,inhibiting the error divergence of navigation *** simulation results prove that the terrain passive integrated navigation system,as number of navigation device is constant,can reduce the attitude angle error and location error of underwater vehicle effectively,and demand the requirement of high precision and low cost.

关键词： Autonomous Underwater Vehicle Terrain Match Integrated Navigation Adaptive Kalman Filter

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脉冲液体射流泵能量平衡的研究

水力发电学报 2011年第5期30卷 199-206页

作者：高传昌张晋华刘新阳赵礼华北水利水电学院郑州450011

运用能量平衡原理,导出了脉冲液体射流泵内脉冲液体能量损失的时均压力比表达式,分析了影响泵内能量转换与耗损的主要因素,研究了主要流动部件的能量损失变化对射流泵性能的影响,并进行了相应的试验研究。结果表明:理论分析与试验结果... 详细信息

运用能量平衡原理,导出了脉冲液体射流泵内脉冲液体能量损失的时均压力比表达式,分析了影响泵内能量转换与耗损的主要因素,研究了主要流动部件的能量损失变化对射流泵性能的影响,并进行了相应的试验研究。结果表明:理论分析与试验结果基本一致,验证了脉冲射流是提高射流泵效率的有效途径。

关键词：水力机械脉冲液体射流泵能量平衡时均性能

TWO-DIMENSIONAL SEDIMENT MATHEMATICAL MODEL FORUNSTEADY FLOW IN THE LOWER YELLOW RIVER

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International Journal of Sediment Research 1999年第2期14卷 295-301页

作者： ZHANG Hongwu LI Dongfeng XU Yuxin ZHANG Junhua (1 Project (No. 39890200) Supported by the National Nature Science Foundation Commission and the Ministry of water conservancy 2 Yellow River institute of Hydraulic Research, zhengzhou 450003, china 3 Ye

The theoretical frame of a new two-dimensional sediment mathematical model is established on the basis of the resent research achievements about the sediment transport law of the Yellow River. The formulas of sediment carrying capacity of flow and river roughness, which reflect the features of the Yellow River, are applied to it. The finite element scheme is employed to deduce the discretized equations of the model. The pre-estimated-verified substitution is used to solve them. Verifications of the model are carried out with the flood occurring on Jinan reach of the Yellow River during the flood season in 1976. The calculation results with the model are in good agreement with the measured data.

关键词： Two-dimensional sediment mathematical model the Yellow River Model verification