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International Conference of Hydropower

作者： SUN Yi Hubei Qingjiang Shuibuya project Engineering Company Yichang prC WANG Yunqing YAN Qiao Hubei Qingjiang Shuibuya project Engineering Company Yichang prC

＜正＞The crack mechanism of the face slab of concrete face rockfill dam（CFrD） is deeply studied by mainly taking into consideration of deformation features due to the real stress during CFrD construction and storage period. Through analysts it shows that concrete drying shrinkage and temperature stress are main factors to cause hair cracks in the face slab in the early stage, while shear-pressure due to deformation of dam body, upstream water pressure during construction period and self-weight of the face slab are main factors to cause the regular cracks in the face slab in the latter stage. preventive measures are suggested on three aspects of material, structure and construction in order to make better stress conditions for the face slab, to improve the ability of anti-seepage of it and to construct it easily.

关键词： concrete face rockflll dam face slab crack mechanism preventive measures

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ON-LINE MONITOrING AND FAULT DIAGNOSIS OF AIr GAp AND STATOr BAr VIBrATION OF LArGE-SCALE HYDrO-GENErATOr BY USING rBF

ON-LINE MONITORING AND FAULT DIAGNOSIS OF AIR GAP AND STATOR...

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International Conference of Hydropower prOCEEDINGS

作者： JIANG Jin Wuhan University Hubei Wuhan p. r. china LIU Guanglin Wuhan University Hubei Wuhan p. r. chinaCHEN Qiquan Wuhan University Hubei Wuhan p. r. chinaTANG Shaohua Ge Heyan Hydro power Station Hubei Yichang p. r. china TAO Zhijian VibroSystem Inc. Montreal Canada

＜正＞ In this paper, the mathematics’ model of rBF Neural Network that is special cases of FLANN is investigated. FLANN is that unknown functions are expressed by a combination of a series of base functions （?）i（x） that consist of input variables. The 1# generator air gap and stator bar vibration of Ge Heyan Hydropower Station are measured on-line using the ZOOM system and SBV system of VibroSystem Inc. The stating graphs of ZOOM system and SBV system include Signature, pole, Sample, and Trend pictures of generator air gap and stator bar vibration. The fault trees of generator including 15 fault eigenvectors are generated. The simulation of rBF is launched by function simurb. The training of rBF network is carried on with two functions: solverbe or solverb.

关键词： fault diagnosis generator air gap stator bar vibration rBF Neural FLANN

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Application of extruded curb technique of CFrD in Shuibuya project

Application of extruded curb technique of CFRD in Shuibuya P...

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International Conference of Hydropower prOCEEDINGS

作者： WANG Yawen LIAO Guangrong ZHOU Junfang china Gezhouba Group Corperation Yichang city Hubei province p.r.C

＜正＞ Experimental research and application of extruded side wall for upperstream slope of Shuibuya CFrD is introduced. This technique have been firstly applied in Gongboxia CFrD Qinghai province and in Bajiaohe CFrD in Hubei province to replace over-fill of bedding material, cutting slope by manpower and machines, rolling and protecting on slope ,etc. During the filling of the first and second stage dam embankment in Shuibuya CFrD, the application of this new technique show its superiority in simplifying the construction processes and raising the construction safety.

关键词： CFrD extruded side wall

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From china’s Heavy precipitation in 2020 to a “Glocal” Hydrometeorological Solution for Flood risk prediction

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Advances in Atmospheric Sciences 2021年第1期38卷 1-7页

作者： Huan WU Xiaomeng LI Guy J.-p.SCHUMANN Lorenzo ALFIErI Yun CHEN hui XU Zhifang WU Hong LU Yamin HU Qiang ZHU Zhijun HUANG Weitian CHEN Ying HU Guangdong province Key Laboratory for Climate Change and Natural Disaster Studies and School of Atmospheric SciencesSun Yat-sen UniversityGuangdong 510000China Southern Marine Science and Engineering Laboratory Guangdong 519000China Earth System Science Interdisciplinary Center University of MarylandMaryland 20742USA School of Geographical Sciences University of BristolBristol BS81THUK DFO Global Flood Observatory University of Colorado BoulderBoulder 80309USA CIMA research Foundation Savona 17100Italy National Meteorological Center Beijing 100081China Guangdong Meteorological Center GuangzhouGuangdong 510000China GuangXi Climate Center NanningGuangxi 530000China Guangdong Climate Center GuangzhouGuangdong 510000China china three gorges {3. Beijing 100081China

The prolonged mei-yu/baiu system with anomalous precipitation in the year 2020 has swollen many rivers and lakes,caused flash flooding,urban flooding and landslides,and consistently wreaked havoc across large swathes of china,particularly in the yangtze river *** precipitation and flooding anomalies have already been seen in magnitude and extension so far this year,which have been exerting much higher pressure on emergency responses in flood control and mitigation than in other years,even though a rainy season with multiple ongoing serious flood events in different provinces is not that uncommon in *** of delving into the causes of the uniqueness of this year’s extreme precipitation-flooding situation,which certainly warrants in-depth exploration,in this article we provide a short view toward a more general hydrometeorological solution to this annual nationwide problem.A“glocal”(global to local)hydrometeorological solution for floods(GHS-F)is considered to be critical for better preparedness,mitigation,and management of different types of significant precipitation-caused flooding,which happen extensively almost every year in many countries such as china,India and the United *** a GHS-F model is necessary from both scientific and operational perspectives,with the strength in providing spatially consistent flood definitions and spatially distributed flood risk classification considering the heterogeneity in vulnerability and resilience across the entire *** in the {3. of such a GHS-F are suggested,emphasizing the user’s requirements and needs according to practical experiences with various flood response agencies.

关键词： flooding flood risk global to local hydrological model extreme precipitation

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EFFECT ON three gorges pOWErHOUSE ENGENDErED BY VIBrATION OF HYDrOTUrBINE-GENErATOr SET

EFFECT ON THREE GORGES POWERHOUSE ENGENDERED BY VIBRATION OF...

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International Conference of Hydropower

作者： OU YANG Jin-hui Earthquake Engineering research Center IWHr. Beijing 100044 china CHEN Hou-qun Earthquake Engineering research Center IWHr. Beijing 100044 china LI De-yu. Earthquake Engineering research Center IWHr. Beijing 100044 china

＜正＞The single-unit capacity and the size of the hydroturbine generator set of three gorges hydropower station rank first in Francis turbine sets in china, while the vibration of powerhouse has become one of the focal problems. According strictly to the {3.ed dimension of three gorges powerhouse on its left bank, an actual three-dimension model of the complex powerhouse structure is made and the dynamic characteristics of the powerhouse are analyzed in the paper. At the same time, on the basis of the measured pulsating pressure data obtained from VGS hydroturbine model experimentation under the water head of 73.meters, dynamic responses of the powerhouse structure to the above pulsating load are solved, and the major vibration sources that vibrate the floor of the powerhouse are found out. As is shown in the results, under the water level of 13. meters, the responses of the powerhouse structure are within the permissive range, which is verified by tentative in-situ measurement.

关键词： three gorges hydropower station integral actual model dynamic analysis dynamic responses in-situ measurement verification

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基于文献计量分析的长江中上游鱼类资源研究综述

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三峡生态环境监测 2024年第2期9卷 2-14页

作者：杨恒梁犁丽戴会超杨曦张欢吕振豫翟然董义阳中国长江三峡集团有限公司科学技术研究院北京101199 中国长江三峡集团有限公司武汉430010 华北水利水电大学测绘与地理信息学院郑州450046 华中科技大学武汉430074

针对长江中上游鱼类资源领域研究,以主题“长江上游”“长江中游”“金沙江下游”“鱼类资源”“鱼类早期资源”为检索条件,筛选了2023.7月前中国知网及Web of Science核心合集数据库收录的503.文献,利用CiteSpace进行文献计量分析并... 详细信息

针对长江中上游鱼类资源领域研究,以主题“长江上游”“长江中游”“金沙江下游”“鱼类资源”“鱼类早期资源”为检索条件,筛选了2023.7月前中国知网及Web of Science核心合集数据库收录的503.文献,利用CiteSpace进行文献计量分析并绘制科学知识图谱,在此基础上从文献数量分布、研究机构及代表作者分布、研究主题内容、研究热点及演变趋势方面对长江中上游鱼类资源领域研究进行了综述。结果表明:中国科学院和中国水产科学研究院等是该领域的领军机构;从发展趋势上看,该领域已形成了鱼类资源现状及变化趋势、鱼类资源的影响机制以及鱼类资源的保护对策3.重要的研究热点和方向。后面需进一步完善江段鱼类资源的长期动态监测方法、梯级开发背景下鱼类资源的变动情况以及鱼类资源的协同保护方法等方面的研究。

关键词：长江中上游鱼类资源文献计量分析科学知识图谱

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EXpLOrING EFFECTIVE MEASUrES TO INCrEASE STABILITY OF HYDrOTUrBINES

EXPLORING EFFECTIVE MEASURES TO INCREASE STABILITY OF HYDROT...

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International Conference of Hydropower prOCEEDINGS

作者： Sun Hongbing Longtan Hydropower development Co. Ltd Nanjing Guangxi post code 53.023.Chu Yueting Longtan Hydropower development Co. Ltd Nanjing Guangxi post code 53.023

＜正＞ Francis turbine vibration and crack on runner blade already seriously affected units, stable operation and the economic benefits won, t be realized. With unit capacity and dimension increasing, the problem will be sharper and worse. This article discusses the countermeasures for insresing turbine stability from five aspects. Firstly choosing appropriate head variation range is the precondition to achieve turbine stability, the ratio between maximum head and, desigh head is controlled under 1.2. Secondly choose excellent hydraulic design, the specific speed shouldn,t be too high, select lower guide vane relative height bo, reduce unit flow, reduce the pressure fluctuation in draft tube, try the best to exclude the channel vortex from operation ranges, avoid the frequency vibration of the vortex under the low load, optimize blade shape. Thirdly optimize structure design, raise the runner,s rigidity and strength, reduce local maximum stress on runner. Fourthly develop manufacturing quality, VOD vacuum deoxygenation refining and numerical control machining should be adopted for stainless steel blade, try the best possible to build integral runner, improve welding technique of runner, reduce residual stress. Fifthly scientific management and operating according to rules and regulations, avoid operating in vibration zones and go through quickly.

关键词： hydraulic design pressure fluctuation in draft tube ocal maximum stress on ruuner vibration of vortex

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rESEArCH ON THE SELF-HEALING WATErSTOp OF pErIMETErJOINT OF JILINTAI-ICFrD

RESEARCH ON THE SELF-HEALING WATERSTOP OF PERIMETERJOINT OF ...

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International Conference of Hydropower prOCEEDINGS

作者： LU Yihui china Institute of Water resources and Hydropower research (IWHr) Beijing 10003.ZHAO Liyuan Xinjiang Jilintai Hydropower development Co. Ltd. Urumqi 83.002pENG Weijun Xinjiang Water resources and Hydroelectric Investigation & Design Institute Urumqi 83.000HAO Jutao ZHAO Bo china Institute of Water resources and Hydropower research (IWHr) Beijing 10003.

＜正＞ Jilintai-1 CFrD is 157m high and designed under 6 degrees of earthquake intensity. The self-healing property was of major concern in its waterstop design. According to experiment result, the water expanding plastic filler was adopted firstly in the world for the top waterstop defense. The main results of the experiment are given, along with the self-healing waterstop of the perimeter joint.

关键词： Concrete face rockflll dam perimeter joint Waterstop Aseismic design.

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THE CONSTrUCTION OF ErTAN DAM

THE CONSTRUCTION OF ERTAN DAM

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International Conference of Hydropower prOCEEDINGS

作者： WU Shiyong Ertan Hydropower development Company Ltd Shuanglin road 98 Chengdu Sichuan province.

＜正＞ Ertan Hydropower Station is the largest power station completed in the 20th century in china and the 240m high Ertan double-curvature concrete arch dam ranks No.3.in the world. Because of the World Bank loan, Ertan Joint Venture Sponsored by Impregilo Italy, was chosen as the contnactor to Implement construction of Entan dam through the international competitive bidding. The construction of dam introduced top level construction and management experience. This article describes whole process of the dam construction including the preparatory work, excavation and treatment of the dam foundation, placement of dam concrete in detail. The experience of Ertan dam could provide beneficiary reference to similar project.

关键词： Ertan dam construction concrete

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THE GEOLOGICAL CONDITIONS AND rEINFOrCEMENT MEASUrES OF SHIMENZI rCC ArCH DAM

THE GEOLOGICAL CONDITIONS AND REINFORCEMENT MEASURES OF SHIM...

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International Conference of Hydropower

作者： WANG Enzhi Department of Hydraulic Engineering Tsinghua University Beijing china 100084 MAO Zongyuan Department of Hydraulic Engineering Tsinghua University Beijing china 100084 HUANG Yuanzhi Department of Hydraulic Engineering Tsinghua University Beijing china 100084 KE Wenhu Department of Hydraulic Engineering Tsinghua University Beijing china 100084

＜正＞Shimenzi Arch dam, constructed on soft rock foundation, is a tall arch dam made up of roller-compacted concrete. The geological conditions in the dam area are quite complex and poor, the following main geological problems existed need to be considered: （1） the mechanical strength of rock is low and the rock is easily weathered. （2） the rock will be softened when encountering water. （3. seven soft interbedded layers lie inside the rock mass, in which three of the layers have mud with quite a low shear strength. （4） there are five faults in the rock mass on both sides of the dam, and three of them are close to the dam. （5） The earthquake intensity in the site area is rated the eighth level. All the adverse geological conditions mentioned above have brought great difficulties to the construction of the dam and would threaten the safety of the operation of reservoir. So the preventive action adopted during the construction of the dam is to reinforce the rock mass in both sides of the dam. This paper will introduce the engineering geological conditions in the area of the dam, the stability of the rock mass, the preventive measures provided by the reinforcement and the operation of the reservoir as well.

关键词： engineering geology rock mass dam’s foundation stability.

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