摘要
为有效解决城市高密度建成区内涝问题,精准确定高密度建成区排涝方案,引入MIKE FLOOD模型,以深圳市福海河南片区为研究对象,模拟分析了片区基于以洪为主及以潮为主情景下现状、集中排涝方案、分散排涝方案等工况的片区内涝及河道漫顶情况,结果表明:(1)在以洪为主及以潮为主2种情景下,现状片区内存在局部内涝,因外海潮位顶托3条支流在以潮为主情景下出现漫顶;(2)分散排涝方案工况可分别降低以洪为主、以潮为主情景下37.78%、74.6%的内涝面积,分别缩短24.53%、51.61%的受涝时间,解决以潮为主情景下3条支流漫顶问题;(3)当发生洪水时,打开3座分散排涝泵站及河口水闸,洪水自排出海;当发生极端高潮位时,关闭河口水闸,打开河口泵站降低干流水位,解决防潮与排涝问题。研究结果可为高密度建成区排涝方案提供基础,对保障城市安全发挥重要意义。
To effectively solve the flooding problem in urban high-density built-up areas and accurately determine drainage schemes for these areas,this paper introduces the MIKE FLOOD model and takes the southern region of Fuhai River in Shenzhen as the research object.The study simulates and analyzes the waterlogging condition and river overtopping condition of the study area under flood-dominated and tide-dominated scenarios by current scheme,centralized drainage scheme and decentralized drainage scheme.The results show that:①Under the flood-dominated and tide-dominated scenarios,there is local waterlogging in the study area.Under the tide-dominated scenario,overtopping occurs in three tributaries,which is caused by the jacking role of the sea.②The working condition of the dispersed drainage scheme can reduce the waterlogging area by 37.78%and 74.6%under the flood-dominated and tide-dominated scenarios respectively,and shorten the flood-affected duration by 24.53%and 51.61%respectively.Under the tidedominated scenario,the overtopping of the aforementioned three tributaries can be solved through the dispersed drainage.③When a flood occurs,through the opening of three dispersed drainage pumping stations and the estuary sluice the flood can flow out to the sea.When an extremely high tide occurs,through the closing of the estuary sluice and the opening of the estuary pumping station,the water level of the main river can be lowered,which solves the problems of flooding prevention and drainage.The research results can provide a basis for drainage schemes in high-density built-up areas,which plays an important role in ensuring urban safety.
作者
严恒恒
卢巧慧
YAN Hengheng;LU Qiaohui(Shenzhen Guanghuiyuan Environmental Water Co.,Ltd,Shenzhen 518018,China;Shenzhen Water Planning and Engineering Co.,Ltd,Shenzhen 518008,China)
出处
《人民珠江》
2024年第12期30-38,共9页
Pearl River
基金
国家重点研发计划(2023YFC3209200)。
