| 广州市南沙区万顷沙网河区排涝调蓄演算研究 |
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| 引用本文： | 刘树锋,刘一休,杨晨,陈记臣,谭丹,沈学明.广州市南沙区万顷沙网河区排涝调蓄演算研究[J].亚热带资源与环境学报,2021(1):1-8. |
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| 作者姓名： | 刘树锋 刘一休 杨晨 陈记臣 谭丹 沈学明 |
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| 作者单位： | 广东省水利水电科学研究院;河口水利技术国家地方联合工程实验室;广东省水动力学应用研究重点实验室;中铁第四勘察设计院集团有限公司 |
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| 基金项目： | 中铁第四勘察设计院集团有限公司科技研发项目“珠三角地区城市综合开发项目水系综合整治关键技术研究”(2018K086)。 |
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| 摘 要： | 快速城市化进程改变了城市地区原有下垫面,不透水层面积增加,暴雨期间汇流时间缩短,洪峰流量加大,进而导致城市内涝加剧,严重影响城市的防洪安全。本研究以广州市南沙区万顷沙网河区为研究对象,基于水量平衡的调蓄演算方法,对研究区域蓄排设施的规模进行分析;构建MIKE11一维网河模型,对涝区水情进行模拟,校核排涝工程规模,并对工程布局与规模进行了优化。结果表明:(1)万顷沙网河区在典型水文组合情况下,内河涌最高水位6.15 m,泵站抽排历时约11 h,抽排流量65 m3·s-1,满足排涝需求;(2)结合片区泵站排水能力,可使片区达到20年一遇24 h暴雨不成灾的规划防洪标准,片区水闸和泵站参数选取合适;(3)在50年一遇超标准情况下,万十涌水位最高约6.33 m,超过片区管控水位,表明当防洪标准提升,片区需合理增设排涝泵站规模,以满足管控水位要求。研究成果可为沿海城市的排涝减灾和实现水系综合整治提供科学依据。
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| 关 键 词： | 调蓄演算 防洪排涝 水量平衡法 MIKE11 万顷沙网河区 |
Flood Drainage and Storage Calculation in Wanqingsha Network River Area of Nansha District,Guangzhou |
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| LIU Shufeng,LIU Yixiu,YANG Chen,CHEN Jichen,TAN Dan,SHEN Xueming.Flood Drainage and Storage Calculation in Wanqingsha Network River Area of Nansha District,Guangzhou[J].Journal of Subtropical Resources and Environment,2021(1):1-8. |
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| Authors: | LIU Shufeng LIU Yixiu YANG Chen CHEN Jichen TAN Dan SHEN Xueming |
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| Institution: | (Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510635, China;State and Local Joint Engineering Laboratory of Estuarine Hydraulic Technology, Guangzhou 510635, China;Guangdong Key Laboratory of Hydrodynamic Research, Guangzhou 510635, China;China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China) |
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| Abstract: | Rapid urbanization process has changed original underlying surface of urban areas,with the impermeable area increased,and during heavy rainfall period,flow concentration time reduced and flood peak discharge increased.As a result,urban waterlogging intensified,which seriously affected the safety of the city.This paper built the MIKE11 one-dimensional river network model,simulated the water regime in the waterlogged area,checked the scale of the waterlogging drainage project,and optimized the project layout and scale.The results showed:(1)Under the typical hydrological combination,the maximum water level of the inland river was 6.15 m,the pumping time of the pumping station was about 11 h,and the drainage flow is 65 m3·s-1,which can meet the demand of drainage.(2)Combined with the drainage capacity of the pumping station in the area,the area could reach the planned flood control standard that there was no disaster in the event of a 24-hour rainstorm once in 20 years,and the parameters of the area sluice and pumping station are selected appropriately.(3)In the case of exceeding the standard once in 50 years,the maximum water level of Wanshi River was about 6.33 m,which exceeded the control water level of the area,indicating that when the flood control standard was raised,the area needed to reasonably increase the scale of drainage pumping stations to meet the control water level requirements. |
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| Keywords: | storage calculation flood control and drainage water balance method MIKE11 Wanqingsha Network River Area |
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