江西吉安青原区某生态公园工程防洪影响评价研究  

Flood impact assessment of an ecological park project in Qingyuan District ofJi ’an City of Jiangxi Province

作　　者：谭毅 牛娇 曾辉 肖理鹏 刘章君 TAN Yi;NIU Jiao;ZENG Hui;XIAO Lipeng;LIU Zhangjun(Jiangxi Academy of Water Science and Engineering,Nanchang 330029;Ji'an Water Resources and Hydropower Planning and Design Institute,Ji'an 343000)

机构地区：[1]江西省水利科学院,南昌330029 [2]吉安市水利水电规划设计院,吉安343000

出　　处：《中国防汛抗旱》2023年第7期55-60,共6页China Flood & Drought Management

基　　金：江西省主要学科学术和技术带头人培养计划青年人才项目(20212BCJ23016)。

摘　　要：为研究江西吉安青原区城北滨江生态公园工程对河道防洪的影响,基于MIKE21软件建立该研究区域的二维水动力数值模型,模型采用有限体积法对计算区域进行空间离散,对该工程的行洪水位和流场影响进行模拟计算,并结合理论公式对比分析。结果表明,该工程建设前后各频率流速变化幅度较小,建设后影响最大的典型断面流速较建设前减小1.66%;各设计洪水频率水位整体呈降低趋势,最大降低0.164 m(洪水频率P=1%),仅在部分建筑物附近呈现水位增加情况;该工程基本不影响上下游河段规划的防洪工程、排涝工程、取水工程的实施和运行,对现有水利工程和其他工程设施影响较小,对其他第三人水事权益基本没有影响。研究结果可为生态公园建设项目的开展提供防洪影响评价方面的技术支撑,可为类似项目防洪评价提供参考。In order to study the impact of the on riverine flood,a two-dimensional hydrodynamic numerical model in northern riverine Ecological Park Project in Qingyuan District of Ji'an City of Jiangxi Province area was established based on MIKE21 software.The model uses the Finite volume method to discretize the calculation area,simulate the impact of the project's flood discharge water level and flow field,and compare and analyze with theoretical formulas.The results show that the variation amplitude of flow velocity at various frequencies before and after the construction of the project is relatively small,and the typical section flow velocity with the greatest impact after construction is reduced by 1.66%compared to before construction;The overall water level of each design flood frequency shows a decreasing trend,with a maximum decrease of 0.164 m(flood frequency P=1%),only showing an increase in water level near some buildings;This project basically does not affect the implementation and operation of flood,drainage,and water-intake projects planned for the upstream and downstream river sections.It has little impact on existing water projects and other engineering facilities,and has little impact on the water rights and interests of other third parties.The research results can provide technical support for flood impact assessment for the development of ecological park construction projects,and can provide reference for flood assessment of similar projects.

关 键 词：生态公园工程 二维水动力模型 有限体积法 防洪影响评价 

分 类 号：TV87[水利工程—水利水电工程] TU986[建筑科学—城市规划与设计]