城市新建小区海绵城市建设要素分析

发布时间：2018-01-04 00:11

本文关键词：城市新建小区海绵城市建设要素分析　出处：《中国农村水利水电》2017年11期 　论文类型：期刊论文

【摘要】：遭受暴雨与内涝的侵袭和困扰,是我国城市在经济发展过程中遇到的普遍问题,在广州地区表现尤为突出。住宅小区是城市的最基本组成单元,小区雨洪管控是杜绝城市内涝的重要措施。采用SWMM模型,选取广州市一规划设计阶段的住宅小区作为研究对象,将其排水系统进行概化,模拟小区开发前后雨洪的变化,对比分析加入下凹式绿地、透水地面、屋面雨水收集系统等低影响开发措施(LID)要素对雨洪的管控作用。结果显示,小区开发后区域洪峰流量显著增大、径流系数变大、洪峰时间提前,采用下凹式绿地、透水地面和屋面雨水收集系统均可有效地消减洪峰流量、减小径流系数、缓解雨水管网的排洪能力,三者的组合实施可在低造价的基础上更好地发挥雨洪管控的作用,并可实现雨水的回用。
[Abstract]:Attack and distress rainstorm and waterlogging, is a common problem encountered in the city of our country in the process of economic development, especially in Guangzhou. In the residential area is the most basic unit of city, area of rain and flood control is an important measure to prevent waterlogging in the city. By using the SWMM model, select Guangzhou city planning and design stage the residential area as the research object, the drainage system was generalized, simulated rainwater district development before and after the comparative analysis with sunken green space, permeable ground, roof rainwater collection system such as low impact development measures (LID) effect on flood control factors. The results showed that the residential development area after the peak flow significantly increases, the runoff coefficient becomes larger, the peak time in advance, the sunken green space, permeable ground and roof rainwater collection system can effectively reduce the peak flow, runoff coefficient, ease the rain Pipe drainage capacity, combination of the three can play a better role in rain and flood control based on low cost, and can realize rainwater reuse.

【作者单位】：广州市市政集团有限公司;广州市市政集团设计院有限公司;
【基金】：“十二五”科技支撑计划项目(2015BAK11B03) 广州市珠江科技新星专项(201506010022)
【分类号】：TU984.12;TU992
【正文快照】： 0引言随着城市化进程的加快,城区人口迅速集中,城市面积急剧膨胀,使城区及其附近区域的自然、文化和生态系统都发生了显著的改变,对城市的水文过程产生重要的影响。城市化发展改变了城市局部的自然地貌,使原先相当部分的自然流域被不透水表面所覆盖,造成雨水汇流速度加大,从而

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