Study on Effects of Reservoir Construction on Hydrological Regime of Downstream River Morphology Transition Area by CHEN Jian, CHEN Chen

“…Based on the construction of Capusilang hot spring reservoir and the characteristics ofmany water conservancy projects at thelower reach of hot spring reservoir and the transition frommountain river to plain river, this paper studies the influence of hot spring reservoirconstruction on the hydrological regime of the downstream river by combining one-dimensionalhydrodynamic calculation model with two-dimensional calculation hydrodynamic model. …”
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Research on Simulation Method for Incoming Flood of Tianyi Reservoir Considering the Influence of Karst Geomorphology by YAN Kang, LIU Jianhua, LIN Kangling, WANG Shengyang, CHEN Hua, CHEN Jie, CHEN Senlin

“…The karst in karst areas leads to a more complex runoff formation process,and the construction of water conservancy projects has aggravated the complexity and uncertainty of the production and confluence process in the basin.On this basis,a semi-distributed incoming flood simulation model of Tianyi Reservoir in the Nanpanjiang River was built by the Xin'anjiang model for karst geomorphology,considering the influence of upstream karst geomorphology.The results reveal that:① the built Xin'anjiang model for karst geomorphology can well simulate the incoming flood process of Tianyi Reservoir,and the simulation accuracy index of each zone is greater than that of the traditional Xin'anjiang model;② the Nash-Sutcliffe efficiency (NSE) coefficient in the series incoming flood simulation of Tianyi Reservior based on the model constructed in this paper is greater than 0.86 during both the calibration period and the validation period,and the volume error is within 12%,which indicates that the simulation results of the constructed model are good;③ the forecast accuracy is evaluated for six typical incoming floods of Tianyi Reservoir from 2018 to 2020,and the evaluation suggests that the built zonal forecast scheme meets the specification accuracy requirements.Thus,the results of the study can provide a reference for hydrological simulation in the upstream karst area of Tianyi Reservoir.…”
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Crack Detection of Reinforced Concrete Member Using Rayleigh-Based Distributed Optic Fiber Strain Sensing System by Tingjin Liu, Honghao Huang, Yubing Yang

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Bending Capacity of Concrete-Encased Underground Electrical Duct Banks under Monotonic Loading: An Experimental Study by Ting-jin Liu, Liang-yi Cai, Qiang Liao, Yu-bing Yang

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Visual Analysis of Coordinated Evaluation of Water Resources Utilization and Economic Development in China by WU Dan, XIANG Xiaoqian

“…Given the literature on the coordinated evaluation of water resources utilization and economic development in China from 1994 to 2020 in the core database of CNKI,the paper uses the visualization tool CiteSpace 5.7.R2 and the scientometrics method to analyze literature characteristics,as well as research focuses and their evolution,and delves into the evolution of the research on this field.The research reveals that according to the distribution of publication time and journals,the number of articles in this field shows an S-shaped curve,going through the starting,growing,and developing stages,and the research focuses are closely combined with national policy on water conservancy.In terms of the distribution of cooperation between universities and research institutions and the characteristics of cooperation among scholars,the phenomenon of extensive dispersion with localized concentrations is presented.The knowledge graphs of keyword networks demonstrate that the terms including “water resources”,“coordinated development”,“water resources carrying capacity”,“social economy”,“index system”,“industrial structure”,and “spatiotemporal coupling” have become popular in this field in the past decade.According to the strategy map of keywords,research themes represented by keywords such as “water footprint”,“urbanization”,“water and soil resources”,and “water environment carrying capacity” are developed into emerging research focuses.The time zone maps of keywords indicate that the application of the water-driven effect and its decoupling evaluation have become a new field of academic research.…”
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Discussion on New Ideas of Technical Consultation Service in the Whole Process of Implementation Stage of Reservoir Resettlement by ZHANG Jiahao, XU Lin, DU Yong, YAN Tiemei, GUAN Shifeng

“…Under the background of high-quality development of water conservancy in the new era,there are many problems in the implementation stage of reservoir resettlement in China,such as the disunity of procedure standards,the lack of work content refinement,many major changes in the implementation process,and insufficient experience of the implementation subject.The reservoir resettlement work adopts the management system of government leadership,hierarchical responsibility,a county as a unit,and the project’s legal person participation.The design unit,project owner,and other technical units have low participation in the resettlement implementation,and there is a lack of rules and regulations to restrain them.The local government has many difficulties in reservoir resettlement implementation,such as the shortage of engineering technicians,the lack of project management experience,and the uncertainty of resettlement policies.In addition,the complexity of resettlement in the implementation stage makes it difficult to achieve many control objectives such as the progress,investment,and quality of the reservoir resettlement implementation.Through a systematic analysis of the difficulties and problems in the stage,this paper takes the lead in proposing the working method of carrying out technical consultation service in the whole process of the implementation stage of reservoir resettlement,creatively analyzes the relevant work content,and puts forward suggestions for addressing the difficulties of the county government in the implementation stage of reservoir resettlement.…”
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Evolution Trend of Water Resources in Xijiang River Basin by SHI Xufan, YAO Zhibin, ZHANG Can

“…The conclusion of this analysis provides an important foundation for the formulation of water resource planning, the development and utilization of water resources, and the construction of major water conservancy projects in Xijiang River Basin.…”
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Research on Carrying Capacity of T-Shaped Stiffened Concrete-Filled Steel Tubular Columns Subjected to Eccentrically Compressive Load by Yuanlong Yang, Xinchen Han, Bo Nan, Xin Tang

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Displacement Calculation Method on Front Wall of Covered Sheet-Pile Wharf by Wen-xue Gong, Li-yan Wang, Jinsong Li, Bing-hui Wang

“…Covered sheet-pile wharves are widely used in port engineering, water conservancy, and civil engineering. This paper is based on the theory of earth pressure and the soil arching effect. …”
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Experimental Centrifuge Study of the Effects of Valley Topography on the Behavior of a Concrete Face Rockfill Dam by Chao Tian, Xuedong Zhang, Lifeng Wen

“…The recent focus on water conservancy projects globally has resulted in the construction of increased numbers of concrete face rockfill dams in narrow valleys. …”
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Study on DEM Correction Method of Digital Twin Basic Data Baseboard by HONG Minghai, YAN Tao, LIU Hui, WANG Xingjian, JING Na, WANG Shiwei, WEI Wenjie, LI Xinan, FENG Chuqiao

“…DEM is one of the most important digital twin basic data and has played a huge role in water conservancy planning,design,and engineering construction.However,the existence of various DEM errors greatly reduces the credibility of analysis and application results.In particular,the missing value after terrain conversion to DEM greatly limits subsequent DEM-based analysis.Based on the principle of raster calculation,this paper calls the corresponding tool of ArcGIS by Python to correct the missing value at the overlapped area of a certain terrain converted to DEM by using the mean of eight valued pixels around the pixel.The results show that the calculation method is highly applicable,reliable,and fast.The data of the corrected and compared values of 306 NoData pixels in the study area are close to the 1∶1 line;the maximum difference between the corrected and compared values is only 3.55 m,and the medium error value is 0.75,which is far below the standard error limit.Calling Numpy through Python greatly improves the calculation speed (10 s),and ArcGIS currently has no tool for directly correcting this method.In contrast,the DEM correction method proposed in this paper can be processed in batch,without processing failures due to memory limit,which greatly improves the work efficiency and has a strong application value for processing digital twin basic data.…”
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Research on the Algorithm for Composite Lining of Deep Buried Water Conveyance Tunnel by Fei Li, Ningdong Chang, Jianhui Wang, Tao Feng, Chunling Li

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Temporal and Spatial Characteristics of Precipitation in West River Basin Based on Remote Sensing Precipitation by QIN Zhanbo, FANG Rongjie, HUANG Guangling, SU Zhong, XU Jingxuan

“…To accurately analyze the spatial and temporal characteristics of precipitation in the West River Basin,this paper evaluates the applicability of GPM precipitation data in the West River Basin from 2001 to 2019 by the measured precipitation data from 34 meteorological stations in the basin and quantitatively analyzes the spatiotemporal variation characteristics of precipitation in the West River Basin based on the GPM data.The results show that the GPM data are consistent with the measured precipitation data with reasonable errors,and have applicability in the West River Basin.The annual precipitation in the basin shows an overall upward trend,and the characteristics of alternate stages of drought and flood periods.The precipitation from April to September accounts for 78.39% of the whole year.The spatial distribution of annual and monthly precipitation shows a gradually increasing trend from west to east step by step.The precipitation has increased in the past 19 years,but 72.39% of the areas do not reach the confidence level of 90%.The degree of precipitation variation is mainly moderate,accounting for 66.24%.In the past 19 years,78.50% of the areas have shown reverse continuous precipitation,and 61.16% of the areas where precipitation increased in the past 19 years do not reach the confidence level of 90%.The future precipitation is likely to reverse to a decreasing trend.The research results can provide theoretical support for scientific planning of West River Basin water resources and promoting the high-quality development of river basin water conservancy in the new stage.…”
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Numerical Modeling of Coupled Surge-Heave Sloshing in a Rectangular Tank with Baffles by Lv Ren, Yinjie Zou, Jinbo Tang, Xin Jin, Dengsong Li, Mingming Liu

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Unit Root Analysis Method of Actual Crack Behavior of the Concrete Dam Based on Residuals of the Monitoring Model by Bo Xu, Zhanchao Li, Jinlei Zhao

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Experimental Investigation of Energy Evolution in Sandstone Failure during Triaxial Unloading Confining Pressure Tests by Rui Yang, Depeng Ma, Yongjie Yang

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Attribution Identification of Runoff Variation in Ganjiang River Basin Based on Budyko Hypothesis by LIU Weilin, HUA Huiling, ZHANG Jingrong, WANG Jun, WANG Yunfei, LIU Lina

“…The hydrometeorological data of the Ganjiang River Basin for 1953—2017,the non-parametric Mann-Kendall test,and the sliding t test were leveraged to analyze the variation characteristics of the hydrometeorological elements of the study area.Sensitivity analysis of the influencing elements was carried out by the elastic coefficient method on the basis of the Budyko hypothesis,and the influence of each element on the runoff variation in the Ganjiang River Basin was assessed quantitatively.The following observations could be made from the results:① During 1953—2017,the runoff and precipitation in the Ganjiang River Basin showed an insignificant increase trend,and the potential evapotranspiration demonstrated a marked decrease trend.② Runoff variation was positively correlated with precipitation and negatively correlated with the characteristic parameters of the underlying surface and potential evapotranspiration.The runoff in the Ganjiang River Basin was most sensitive to precipitation change.③ Climate change had a positive effect on the increase in the runoff in this Basin,and it was the leading factor affecting runoff variation,with a contribution rate of 73.7%~104.9%.Human activities took the second place,accounting for -4.9%~27.0%.Specifically,human activities had a great impact on the runoff in the upper and middle reaches.The implementation of the ecological construction projects in the upper reaches of the Ganjiang River and the water conservancy construction projects in the middle reaches changed the underlying surface conditions of the basin and thereby affected the river runoff.…”
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Application of Coupling Model of Xin'anjiang River Runoff and TANK Confluence in Southern Humid Area by QIU Wenyi, ZHU Yongjun, ZHAN Zhongyu

“…In order to improve the accuracy of runoff calculation in humid area of southern China, make full use of hydrological stations of similar basins in nearby or underlying surface to solve the problem of reliability of simulated runoff results in areas without runoff data, and provide reasonable and scientific decision-making basis for construction of water conservancy project at areas without runoff data, this paper proposes the runoff calculation and analysis method combining Xin’anjiang River runoff and TANK confluence, and analyzes the runoff in this area through rainfall and evaporation from 1962 to 2016 by taking Tongshanyuan River Basin as an example. …”
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Three-dimensional tunnel face stability analysis with gate layout by discretization-based kinematic approach by Benchao Zhao, Gonglei Chen, Zhengwei Xu, Haining Liu, Hongyu Wang, Bohui Xing

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The Spatiotemporal Variations of Runoff in the Yangtze River Basin under Climate Change by Ziwei Xiao, Peng Shi, Peng Jiang, Jianwei Hu, Simin Qu, Xingyu Chen, Yingbing Chen, Yunqiu Dai, Jianjin Wang

“…A better understanding of the runoff variations contributes to a better utilization of water resources and water conservancy planning. In this paper, we analyzed the runoff changes in the Yangtze River Basin (YRB) including the spatiotemporal characteristics of intra-annual variation, the trend, the mutation point, and the period of annual runoff using various statistical methods. …”
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