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  1. 181

    Reliability Analysis of Water Intake Based on MIKE Model by LIANG Zhihong, ZHENG Jiangli, CHEN Xiuhong, LIU Xia

    Published 2021-01-01
    “…The reliability of water intake is one of the main factors affecting the operation of the project,and is a prerequisite for the project to be put into use.Taking the 10 million-ton-level metallurgical new material industrial base in Wuzhou as the research object,based on the MIKE21 module in the MIKE software,this paper establishes a hydrodynamic model for verifying the reliability of the existing water intake scheme,as well as puts forward the corresponding countermeasures for the scheme with water intake risk.The results show that:①During the dry season,the water level of the Changzhou Water Control Project is relatively high,and the reservoir storage can meet the design water intake quantity of the project;②During the normal water period,the gates of Changzhou Water Control Project need to be opened to ensure the safety of flood control.If the inflow of the Shangxiaohe tributary of Xunjiang River is abundant,the project is guaranteed with water intake.If the inflow of the Shangxiaohe tributary is small,the project will have water intake risk;③Countermeasures such as dredging the river channel and lowering the water intake can effectively increase the water intake of the project,thereby avoiding the water intake risk of the project during the normal water period.The research results are of guiding significance for the construction of the 10 million-ton-level metallurgical new material industrial base in Wuzhou,and of theoretical significance for water intake reliability analysis through MIKE21.…”
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    Study on Urban Flood Risk Transfer Caused by Polders for Flood Control in Plain River Network Areas by WANG Yuefeng, CUI Tingting, XU Youpeng, WANG Qiang

    Published 2023-01-01
    “…The construction of polders in plain water network areas has changed the pattern of flood control and drainage,and the transfer of urban flood risks caused by it is still unclear.By comprehensively applying urban flood coupling simulation and risk assessment method,this paper quantitatively revealed the urban flood risk transfer caused by polders for flood control in Changzhou City and put forward the flood risk coordination scheme through typical flood simulation analysis.The results show that:① The use of polders for flood control reduces the inundated area by 56%~64% and the severely inundated area (>1.0 m) by 70.2% and aggravates the flood disaster in the southern and eastern parts of the enclosure;② the implementation of polders for flood control accelerates the transfer of flood risks from urban areas to suburbs,which can reduce the flood risk of 4~5 subcatchment areas within the enclosure by more than 50%,while the flood risk increases significantly in the three subcatchment areas in the southern and eastern parts of the enclosure;③ according to the principle of risk sharing,the water level of polders for flood control is increased by 0~0.10 m,which can be used as an alternative scheme for Changzhou flood control dispatching in the future.The research results can provide a reference for urban flood control and disaster reduction and flood optimal dispatching in plain water network areas.…”
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