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Research on stability of the accumulated rock-soil body of reservoir bank under rainfall condition

Science china(Technological Sciences) 2009年第9期52卷 2528-2535页

作者： gu chongshi1,2.wu haizhen1,2.& su huaizhi1,2.1 college of water resources and hydropower engineering,hohai university,nanjing 2.0098,china 2 National engineering Research Center of water resources Efficient Utilization and engineering Safety,hohai university,nanjing 2.0098,china 3 Jiangxi water Conservancy Research Institute,Nanchang 330029,china college of water resources and hydropower engineering Hohai University Nanjing China National engineering Research Center of water resources Efficient Utilization and engineering Safety Hohai University Nanjing China Jiangxi water Conservancy Research Institute Nanchang China

The shear strength parameters property of rock-soil aggregates in embankment slope of reservoir,that is,the relationship between cohesion and gravel content,between friction angle and gravel content,and the relationship between cohesion and water content,between friction angle and water content,is studied based on the direct shear test results,the shear strength change law of the rock-soil aggregates is given,and the unsaturated shear strength formulation of rock-soil aggregates that could consider suction and saturation degree influence is put forward in this paper,through which the sliding or failure physical mechanism of this type of slope under the condition of rainfall infiltration is studied. Also the 3D unsteady saturated-unsaturated seepage field and its FEM resolving mode are established based on the analysis of the slope rainfall infiltration process. Case study with this method indicates that the minimum safety factor of the accumulated rock-soil aggregates dose not arrive at the moment of rainfall cessation,but appears several hours after the rainfall cessation,this phenomenon is in accordance with the practical slope engineering's failure process and could explain appropriately the slope failure caused by rainfall infiltration. Research results in this paper have an important reference value for the research on stability of the accumulated rock-soil aggregates in embankment slope of reservoir,and can enrich the stability analysis method and relevant theory of reservoir embankment slope.

关键词： reservoir bank slope rock-soil aggregates rainfall infiltration saturated/unsaturated seepage

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Review on hidden trouble detection and health diagnosis of hydraulic concrete structures

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Science china(Technological Sciences) 2007年第Z1期50卷 34-50页

作者： wu ZhongRu1,2?, LI Ji1, gu chongshi1,2.& su huaizhi1,2.1 college of water Conservancy and hydropower engineering, hohai university, nanjing 2.0098, china 2 National engineering Research Center of water resources Efficient Utilization and engineering Safety, nanjing 2.0098, china college of water Conservancy and hydropower engineering Hohai University Nanjing China National engineering Research Center of water resources Efficient Utilization and engineering Safety Nanjing China

A large number of hydraulic concrete structures have hidden defects such as cracks, erosion, freeze and thaw, thermal fatigue, carbonization. These hidden defects seriously affect the strength, stability and durability of structures. These problems are studied mainly by single monitoring or diagnosis methods at present. The integration of multiple monitoring and diagnosis methods is not applied widely. Besides, the analysis theory on these problems is not developed very well. The systemic study on the aging mechanism of hydraulic concrete structures, time- variation model and health diagnosis is still not enough. The support for engineering practice is limited. Aimed at these major scientific and technological problems and combined with specific projects, study on detection of hidden defects and health diagnosis of hydraulic concrete structure has been carried out. This study includes the following content: field non-destructive examination of hidden defects of hydraulic concrete structures, seepage detection, the construction of in-situ sensing system, the combination of field detection and in-situ monitoring, the mechanism of crack, freeze and thaw, erosion and carbonization of hydraulic concrete structure, mechanism of combination aging; time-variation model of hydraulic concrete structure, theories and methods for health diagnosis of hydraulic concrete structures.

关键词： hydraulic concrete structure hidden trouble detection health diagnosis

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A new method of estimating the equivalent elastic modulus of RCCD

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Science china(Technological Sciences) 2007年第Z1期50卷 136-143页

作者： gu chongshi1,2?, wu Yuan1, su huaizhi1,2.& TANG LiHui1 1 college of water Conservancy and hydropower engineering, hohai university, nanjing 2.0098, china 2 National engineering Research Center of water resources Efficient Utilization and engineering Safety, nanjing 2.0098, china college of water Conservancy and hydropower engineering Hohai University Nanjing China National engineering Research Center of water resources Efficient Utilization and engineering Safety Nanjing China

Based on the composite material mechanic theory, the analysis method for the equivalent elastic moduli which are parallel and vertical to the construction interface of RCCD is studied in this paper. The differences between the equivalent elastic moduli which are vertical to the construction interface of RCCD gotten from different methods are discussed in detail. The variation range of the equivalent elastic modulus which is vertical to the construction interface of RCCD is studied based on the principle of minimum complementary energy and the principle of minimum potential energy. The effect of the related influential factors on the equivalent elastic modulus is analyzed. The estimation formula of the equivalent modulus which is vertical to the construction interface of RCCD is proposed. The feasibility of the approach proposed in this paper is analyzed through an example.

关键词： RCCD equivalent elastic modulus variation range estimation method

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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 2.0098,china 2 National engineering Research Center of water resources Efficient Utilization and engineering Safety,nanjing 2.0098,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 college of water Conservancy 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 Control 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 *** 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

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Game model of safety monitoring for arch dam deformation

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Science china(Technological Sciences) 2008年第S2期51卷 76-81页

作者： su huaizhi1,2.wu ZhongRu1,2,gu YanChang1,2,HU Jiang1 & WEN ZhiPing3 1 college of water Conservancy and hydropower engineering,hohai university,nanjing 2.0098,china 2 National engineering Research Center of water resources Efficient Utilization and engineering Safety,nanjing 2.0098,china 3 Department of Computer engineering,nanjing Institute of Technology,nanjing 210013,china college of water Conservancy and hydropower engineering Hohai University Nanjing China National engineering Research Center of water resources Efficient Utilization and engineering Safety Nanjing China Department of Computer engineering Nanjing Institute of Technology Nanjing China

Arch dam deformation is comprehensively affected by water pressure,temperature,dam's structural behavior and material properties as well as other *** them the water pressure and temperature are external factors(source factors) that cause dam deformation,and dam's structural behavior and material properties are the internal factors of deformation(resistance factors).The dam deformation is the result of the mutual game playing between source factors and resistance ***,resistance factors of structure and materials that reflect resistance character of arch dam structure are introduced into the traditional model,where structure factor is embodied by the flexibility coefficient of dam body and the maximum dam height,and material property is embodied by the elastic modulus of *** the basis of analyzing the correlation between dam deformation and resistance factors,the game model of safety monitoring for arch dam deformation is put forward.

关键词： arch dam deformation monitoring model flexibility coefficient game theory

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Dam risk assistant analysis system design

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Science china(Technological Sciences) 2008年第S2期51卷 101-109页

作者： HE XianFeng1,2,3,gu chongshi3,4,wu ZhongRu3,4 & su huaizhi3,4 1 Yellow River Institute of Hydraulic Research,Zhengzhou 450003,china 2 Embankment Security Defect Prevention and Control engineering Research Center of MWR,Zhengzhou 45000,china 3 college of water resources and hydropower engineering,hohai university,nanjing 2.0098,china 4 National engineering Research Center of water resources Efficient Utilization and engineering Safety,hohai university,nanjing 2.0098,china Yellow River Institute of Hydraulic Research Zhengzhou China Embankment Security Defect Prevention and Control engineering Research Center of MWR Zhengzhou China college of water resources and hydropower engineering Hohai University Nanjing China National engineering Research Center of water resources Efficient Utilization and engineering Safety Hohai University Nanjing China

In order to reduce the labor intensity and task difficulty of dam risk analysis and to meet the actual requirement of dam risk analysis,it is necessary to establish a dam risk assistant analysis *** program structure and the implementation ways of the dam risk assistant analysis system are analyzed,and a procedural framework with "three-tier and multi-database" structure and "level structure" is *** concept of dam risk assessment system modular development is proposed and the coupled mode of function module and data is ***,the dam risk assistant analysis system is developed using Delphi visual programming language.

关键词： dam risk risk analysis assistant analysis system

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库岸边坡变形的统计-混沌混合预测模型

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水电能源科学 2008年第3期26卷 129-132页

作者：宋敬衖吴海真顾冲时河海大学水利水电工程学院江苏南京210098

基于降雨作用下边坡非饱和土的滑移理论及岩土体蠕变效应的量化研究,构建了库岸边坡改进的多因素监控模型。在此基础上将边坡位移表示为由确定性分量、混沌分量和随机分量叠加而成,并以多因素监控模型对确定性成分建模,对残差序列进行... 详细信息

基于降雨作用下边坡非饱和土的滑移理论及岩土体蠕变效应的量化研究,构建了库岸边坡改进的多因素监控模型。在此基础上将边坡位移表示为由确定性分量、混沌分量和随机分量叠加而成,并以多因素监控模型对确定性成分建模,对残差序列进行相空间重构,建立了统计—混沌混合预测模型。实际应用表明,与传统的统计模型相比,该模型可明显提高回归和预测精度,具有一定的实用价值和推广价值。

关键词：库岸边坡变形改进的多因素监控模型统计-混沌混合预测模型

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邯郸多个水文站近60年径流量变化特征分析

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地下水 2024年第1期46卷 187-189页

作者：谷鹏程宋利兵袁龙龙刘颖王利书河海大学水文水资源学院江苏南京210098 武安市水利局河北邯郸056399 邯郸市河湖长制技术服务中心河北邯郸056005 河北工程大学水利水电学院河北邯郸056038

漳卫河水系和子牙河水系是邯郸河流的重要组成部分,为探究其径流量的变化特征,选取刘家庄、观台、东武仕、木鼻四个水文站近60 a实测径流量为研究对象,采用线性回归法、Mann-Kendall检验法、Morlet小波分析法从趋势性、突变性、周期性... 详细信息

漳卫河水系和子牙河水系是邯郸河流的重要组成部分,为探究其径流量的变化特征,选取刘家庄、观台、东武仕、木鼻四个水文站近60 a实测径流量为研究对象,采用线性回归法、Mann-Kendall检验法、Morlet小波分析法从趋势性、突变性、周期性的角度分别对其变化特征进行分析,结果表明:(1)在1956-2.16年间,刘家庄、观台、东武仕三站的年径流量均呈现出下降的趋势,而木鼻站的年径流量呈现出上升趋势。(2)刘家庄、观台、木鼻站年径流量序列的突变年份分别为1972年、1978年、1956年和2002年,东武仕站年径流量序列不存在突变年份。(3)刘家庄站和东武仕站年径流量序列周期大致为14 a,观台站和木鼻站年径流量序列周期大致为13年。(4)流域的年径流量总体呈现出下降的趋势,突变多发生在70年代,径流周期为14 a左右。

关键词：径流量趋势性分析 Mann-Kendall检验法 Morlet小波分析法

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非一致性水文频率计算的基因途径Ⅱ：水文基因诊断系统与非一致性常规矩基因方法

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应用生态学报 2018年第4期29卷 1033-1041页

作者：谢平赵江艳吴子怡桑燕芳陈杰李彬彬顾海挺武汉大学水资源与水电工程科学国家重点实验室武汉430072 国家领土主权与海洋权益协同创新中心武汉430072 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室北京100101 长江委水文中游局武汉430010 浙江大学建筑工程学院杭州310058

非一致性水文频率分析是变化环境下工程水文计算需要解决的主要问题之一.本文从随机水文序列组成的角度,将不同时间尺度下的非一致性水文现象概化为具有遗传、变异与进化特性或规律的水文过程,据此借鉴生物基因理论提出水文基因的概念,... 详细信息

非一致性水文频率分析是变化环境下工程水文计算需要解决的主要问题之一.本文从随机水文序列组成的角度,将不同时间尺度下的非一致性水文现象概化为具有遗传、变异与进化特性或规律的水文过程,据此借鉴生物基因理论提出水文基因的概念,并定义常规矩基因为水文序列的各阶原点矩和中心矩.为了识别与检验水文基因的各组成成分,创建了水文基因诊断系统.为了阐述水文基因的遗传、变异与进化原理,以P-Ⅲ分布为例详细描述了常规矩基因的构建与表达过程.以澜沧江流域允景洪站年最小1月流量序列为例,对上述基于常规矩基因的非一致性水文频率计算方法进行了可行性和实用性验证.结果表明:该方法能以水文基因变异识别为基础,揭示非一致性水文序列的演变规律,不仅为变化环境下工程水文计算提供了新的研究途径,也能为水安全评价提供重要的参考依据.

关键词：水文基因常规矩进化原理非一致性水文频率

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基于共享储能容量分配机制的配电网双层优化策略

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水利水电技术（中英文） 2023年第7期54卷 50-63页

作者：赵婷婷吴刚勇夏祥武王建锋顾冰管敏渊上海电力大学电气工程学院上海200090 国网浙江省电力有限公司湖州供电公司浙江湖州313000 浙江泰仑电力集团有限责任公司浙江湖州313000

【目的】高比例新能源接入带来的随机波动性使得配电网运行面临严峻挑战。为优化内部含多微电网与共享储能功率交互的配电网运行,提出基于共享储能容量分配机制的配电网双层优化模型。【方法】根据多微电网缺额负荷的差异互补特性,利用... 详细信息

【目的】高比例新能源接入带来的随机波动性使得配电网运行面临严峻挑战。为优化内部含多微电网与共享储能功率交互的配电网运行,提出基于共享储能容量分配机制的配电网双层优化模型。【方法】根据多微电网缺额负荷的差异互补特性,利用余弦相似度算法计算缺额负荷的相似度权重,结合缺额负荷对共享储能容量进行权重分配。建立了配电网潮流最优和电压偏移最小和多微电网弃风弃光最小和运行成本最小的双层优化模型。上层基于分配的储能容量优化各微电网出力范围,在配电网层求解中以得到微电网最优出力可行解并传递给下层;下层基于分配的储能容量进行多微电网共享储能的功率交互,实现多微电网的经济运行。【结果】利用改进的IEEE33节点系统对模型进行验证,结果显示:(1)共享储能容量分配机制与传统分配机制相比,配电网线损和电压偏移分别减小了9.8%和9.2%,多微电网的弃风弃光率和运行总成本分别降低了23.8%和6.1%;(2)对共享储能容量分配机制下的不同储能模式进行对比,共享储能比独立储能在多微电网的弃风弃光率和运行总成本方面分别降低了14.8%和3.3%。【结论】结果表明:合理有效的共享储能分配机制,可以促进高比例新能源消纳,提高共享储能整体利用率,实现配电网整体优化运行。

关键词：高比例新能源缺额负荷相似度权重容量分配机制共享储能影响因素微电网储能模式

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