Overview on industrial Internet honeynet technology by CHEN Xi, JIANG Yaguang, LIN Xin, ZHOU Wen

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Numerical Simulation of Flow and Suspended Sediment Transport in the Distributary Channel Networks by Wei Zhang, Qiong Jia, Xiaowen Chen

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A Coupled Model of the 1D River Network and 3D Estuary Based on Hydrodynamics and Suspended Sediment Simulation by Wei Zhang, Shujie Lyu, Yuliang Zhu, Xiaowen Chen

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Comparative Study on Water Resources Carrying Capacity of Key River Basins in the Pearl River Region by JIN Zhanwei, SUN Bo, LIU Hechang

“…In this paper,the evaluation index system of water resources carrying capacity was built in terms of three dimensions of water resources carrying subject,carrying object,and approach.TOPSIS model,coupling coordination model,and production function model were used to analyze the water resources carrying status of 27 key basins in the Pearl River region.The results show that the water resources carrying capacity of Nandu River,Guijiang River,Wanquan River,and Beijiang River basins rank first,and that of Jiuzhou River,Huangni River,Qinjiang River,and Jianjiang River Basins rank second.The internal elements of the water resources system in the key basins are mainly characterized by near imbalance,with 17 near imbalance basins,nine mild imbalance basins,and one moderate imbalance basins.The water resource carrying efficiency curve of key basins shows three types:low,medium,and high.There are four low-efficiency basins,12 medium-efficiency Basins,and 11 high-efficiency basins.A comprehensive comparison of water resources carrying capacity ranking,coupling coordination degree,and carrying efficiency shows that the water resource carrying capacity of the Jiuzhou River,Jianjiang River,and Qinjiang River Basins is poor,while that of the Beijiang River,Xijiang River,Wushui River,Hejiang River,and Tingjiang River Basins is relatively good.The results in this paper can be an important reference for the planning,development,utilization,protection,and management of water resources in the Pearl River region and key river basins.…”
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Application of One-Dimensional Hydrodynamic Model in Water Storage at the End of Flood Seasons for Changzhou Reservoir by LIAO Xiaolong, ZHONG Yixuan, HOU Guibing, JIN Gaoyang

“…Scientific selection of the timing and time for pre-discharge is one of the key techniques and decision bases necessary for conducting reservoir pre-storage at the end of flood seasons.For channel reservoirs,the water level decline in the reservoir area usually lags behind that at the dam sites,which must be fully considered to avoid the submerging loss of the reservoir area and the increase in flood risks for downstream areas due to untimely pre-discharge.In this research,with the mainstream of Xijiang River,Changzhou hydro-junction,as the research object,a one-dimensional hydrodynamic model is built on the basis of the measured data of river sections in the Changzhou reservoir area to study the effects of water storage at the end of flood seasons.The model parameters are calibrated and validated using observed flood data.The results reveal that pre-discharge should be executed for the Changzhou reservoir to the water level of 18.6 m when the inflow forecast within 3 d exceeds 11 800 m³/s,and a rising water regime is expected.It takes 2.6 d,3.2 d,and 3.7 d for the pool level to be lowered to 18.6 m from 19.6 m,20.1 m,and 20.6 m,respectively,which is about 1.3~2.3 d earlier than the time needed for the reservoir water level to lower to the corresponding water levels.The study provides a useful technical reference for the optimization of water storage at the end of flood seasons in the Changzhou hydro-junction and also lays a scientific foundation for determining the pre-discharge timing and time of channel reservoirs.…”
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Analysis of Variation Characteristics of the Annual Maximum Flood Flow of Main Streams in Guangdong Province by LIANG Yuanyuan

“…In order to understand the variation characteristics of the annual maximum flood flow at the main hydrological stations in Guangdong province and reduce the production,living,and ecological environment problems caused by floods,the annual maximum flood flow series from 1977 to 2014 at seven hydrological stations in Guangdong province,namely,Sanshui Station,Makou Station,Gaoyao Station,Shijiao Station,Boluo Station,Huazhou Station,and Chaoan Station,are studied.MK test and Pettitt test are used to carry out study or wavelet analysis on the characteristics of the trend,variability,and cycle changes of the annual maximum flood flow at typical stations in the main streams of Guangdong province.The results show that:① the annual maximum flood flow at Boluo Station and Chaoan Station decreases slightly,while that at the other five stations increases,with that at Shijiao Station and Sanshui Station rising significantly.② Four of the seven stations have variability,and they are Gaoyao Station (in 1991 and 1992),Shijiao Station (in 1992,2011,and 2012),Makou Station (in 1993),and Sanshui Station (in 1993),and the variability occurs more than once at Gaoyao and Shijiao stations.In terms of spatial and temporal distribution,the four stations with variability mostly belong to the Xijiang and Beijiang river systems in the 1980s,1990s,and the 21st century.③ Sanshui Station has two main cycles of 2~10 a and 20~30 a,and Makou Station has cycles of 2~9 a and 9~27 a.Gaoyao Station experiences a cycle of 4~10 a and 10~24 a,and Shijiao Station owns a cycle of 2~12 a and 12~20 a.Boluo Station has a cycle of 5~12 a and 12~24 a.In addition,Huazhou Station experiences three cycles of 3~7 a,7~18 a,and 18~26 a,and Chaoan Station experiences cycles of 3~10 a,10~14 a,and 14~23 a,respectively.…”
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Control Index for Water Regulation in Fish Breeding Season for Dongta Spawning Ground after Operation of Datengxia Gorge Water Conservancy Project by LIU Lishi, WANG Li, GE Xiaoxia, TAN Xichang

“…After the operation of the Datengxia Gorge water conservancy project,the change in the hydrological rhythm of the downstream river channel may have a certain impact on the function of the Dongta spawning ground about 10 km downstream.To maintain the normal function of the Dongta spawning ground,we should analyze the hydrological rhythm process required for fish spawning and use it as a control index to implement ecological regulation of reservoirs and thus restore the ecological environment of river channels.According to the observation data of early fish resources and hydrology over the past dozen years,the correlation between early fish resources and hydrological characteristic values in the Dongta spawning ground is analyzed by different statistical methods such as grey relational analysis and linear regression.In combination with the practical experience of ecological regulation in the Xijiang River Basin,the control index requirements for water regulation during the fish breeding period by the Datengxia Gorge water conservancy project are put forward.Specifically,by the regulation of the Datengxia Gorge water conservancy project from May to July every year,when the section flow rate of Dahuangjiangkou exceeds 3 500 m³/s,the water rise duration shall be no less than four days,with the daily rise rate in the water rise stage of more than 1 000 m³/s.The time for water to recede shall be no less than three days,and the flow rate in the water recession stage shall be above 3 500 m³/s.The regulation shall be performed at least once each year.The research results can provide a technical reference for maximizing the function of the Dongta spawning ground in the fish breeding period by the regulation of the Datengxia Gorge water conservancy project.…”
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