上海地区雨水花园结构对降雨径流水文特征的影响

发布时间：2018-01-20 13:08

本文关键词： 风景园林海绵城市雨水花园结构径流水文特征　出处：《中国园林》2016年04期 　论文类型：期刊论文

【摘要】：雨水花园是海绵城市构建过程中最基本、最适用的低影响设施技术之一,其结构特征是发挥自然式雨洪管控功能的关键。针对上海地区雨水径流的水文特点,通过室内人工模拟控制实验,运用正交实验方法,分析不同结构的雨水花园(包括填料类别、填料层厚度、排水层厚度)对降雨径流水文特征的影响(出流洪峰延迟时间、总削减率、渗透率、蓄水率)。结果表明,结构因素对出流洪峰延迟时间及径流总削减率的影响大小顺序为:填料层种类填料层厚度排水层厚度;对渗透率影响大小顺序为:填料层种类填料层厚度排水层厚度;对蓄水率影响大小顺序为:填料层厚度排水层厚度填料层填料;适宜上海地区以洪峰延迟及径流总量削减为主要目的的最优雨水花园结构是:沸石作为填料层填料,厚度为30~50cm;砾石作为排水层填料,厚度为20~30cm。
[Abstract]:Rain Water Garden is one of the most basic and suitable low-impact facilities in the construction of sponge city. Its structural characteristics are the key to play the function of natural rain and flood control. Aiming at the hydrological characteristics of Rain Water runoff in Shanghai. Through the indoor artificial simulation control experiment, using the orthogonal experiment method, analyzes the different structure Rain Water garden (including the packing class, the packing layer thickness. The influence of drainage layer thickness on the hydrological characteristics of rainfall runoff (delay time of Hong Feng, total reduction rate, permeability, water storage rate and so on). The results show that. The order of the influence of structural factors on the delay time and the total reduction rate of runoff is as follows: the thickness of the packing layer is the thickness of the drainage layer; The order of influence on permeability is as follows: packing layer type packing layer thickness drainage layer thickness; The order of influence on water storage rate is as follows: packing layer thickness drainage layer thickness packing layer packing; The optimum Rain Water garden structure, which is suitable for Shanghai with Hong Feng delay and total runoff reduction as its main purpose, is as follows: zeolite is used as filler, and the thickness is 30 ~ 50 cm; The gravel is used as the packing of drainage layer with a thickness of 20 ~ 30 cm.
【作者单位】：上海交通大学;上海交通大学农业与生物学院园林科学与工程系;
【基金】：国家“十二五”科技支撑计划项目“乡村自然生态系统保护与修复技术研究及示范”(编号2015BAL02B01)资助
【分类号】：TU992;TV213.9
【正文快照】： 目前,城市雨洪灾害已成为制约地区生态发展的核水渗滤功能且行之有效的旱地雨水径流调蓄技术[4]。其可心问题之一[1],主要表现为“雨岛效应”和“混浊岛效有效减少城市地表径流峰值,延缓市政排水压力,同时也应”,主要原因是城市地表不透水面积比例不断增加,雨能起到净化地表径

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