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城乡接合部混合排水区湖泊排涝标准及调度研究——以武汉市后湖流域为例

Study on the standard and dispatching of lake drainage in the mixed drainage of peri-urban area——A case study of Houhu Basin in Wuhan City
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摘要 城镇化高速发展改变了传统的土地利用结构,对水文循环产生了较大影响,导致城市内涝频发,充分发挥湖泊调蓄功能是城市防洪排涝的有效措施之一。城乡接合部城排区与农排区混合分布,湖泊的防洪排涝调度相对比较单一,排水区情况复杂。以武汉市后湖流域为例,分析城乡接合部混合排水区的特点,综合考虑不同排涝标准下重新核定后湖的特征水位,绘制出后湖的常规调度图,并预测了后湖排涝调度在降低场次洪水最高水位、缩短内涝时间等方面的效益,提出了在城乡接合部的混合排水区需进一步编制调度规程,加强湖泊排涝设施建设与管理等措施,并将湖泊纳入区域整体防洪排涝系统统一规划调度,使湖泊发挥最大调蓄作用等,以期为城乡接合部排涝标准及湖泊调度的研究提供可推广的技术经验。 The rapid development of urbanization has changed the traditional land use pattern and had a great impact on the hydrological cycle,leading to frequent urban waterlogging.One of the effective measures for urban flood prevention and drainage is to give full play to the function of lake regulation and storage.The urban drainage and agricultural drainage are mixed in the peri-urban area,and the flood prevention and drainage dispatching of lakes is relatively single purpose,and the situation of drainage area is more complex.Taking Houhu Basin in Wuhan as an example,the characteristics of the mixed drainage at the urban-rural area are analyzed,the characteristic water level of the Houhu Lake is re-approved under different drainage standards,the routine scheduling chart of the Houhu Lake is drawn,and the benefits of the drainage dispatching of the Houhu Lake in reducing the maximum water level of floods and reducing the duration of waterlogging are predicted.This paper puts forward that in the mixed drainage of peri-urban area,it is necessary to further formulate dispatching regulations,strengthen the construction and management of lake drainage facilities,and bring the lake into the unified planning and dispatching of the regional overall flood prevention and drainage system,so as to make the lake play the maximum role of regulation and storage,so as to provide technical experience for the research of drainage standards and lake dispatching of urban-rural junction.
作者 殷书梅 赵烨 张翔 YIN Shumei;ZHAO Ye;ZHANG Xiang(Wuhan Water Research Institute,Wuhan 430010;Hubei Key Laboratory of Water System Science for Sponge City Construction,Wuhan University,Wuhan 430072)
出处 《中国防汛抗旱》 2021年第7期31-36,共6页 China Flood & Drought Management
关键词 城乡接合部 混合排水区 排涝标准 湖泊排涝调度 城市内涝 后湖流域 武汉市 peri-urban area mixed drainage area drainage standards lake drainage dispatching urban water⁃logging Houhu Basin Wuhan City
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