寒冷气候下雨水管理的生物滞留研究(一)水力学

IF 2.4 3区 环境科学与生态学 Q2 ENGINEERING, CIVIL
Zhan Li , Hannah Kratky , Tong Yu , Xiangfei Li , Haifeng Jia
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引用次数: 7

摘要

模拟的风暴事件应用于四个大型生物滞留柱,在艾伯塔省埃德蒙顿的典型气候中,大约1.6 年的等效体积。夏季、冬季和春季径流在温度控制的实验室中模拟,温度范围为- 20 °C至+20 °C。在夏季,多孔性较少的生物滞留介质(即壤土)在1:2年的事件中有效地削弱了83%的峰值流量,而多孔性较多的生物滞留介质(即砂质壤土)保持了9.1 cm/h的水力导率。冬季操作包括将所有色谱柱置于- 20 °C,然后反复置于1 °C。事件在1 °C的空气温度下进行,尽管最初是冻结的,但更多多孔介质在冬季经历了更快的水突破和池塘消失,这表明在冬季间歇性变暖期间的水力性能是可以实现的。所有柱的水力性能在随后的夏季迅速回升。所有栏目在入渗率、积水深度和持续时间方面都成功地管理了1:2年的事件。初步结果还表明,这两种媒体都有可能管理较低频率(1:5和1:10 年)的事件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on bioretention for stormwater management in cold climate, Part I: Hydraulics

Simulated storm events were applied to four large bioretention columns to approximate 1.6 years of equivalent volume in Edmonton, Alberta’s typical climate. Summer, winter, and spring runoff were simulated in temperature-controlled laboratories with a range of −20 °C to +20 °C. During summer less porous bioretention media (i.e. loam soil) effectively weakened peak flows by >83% for 1:2 year events while more porous bioretention media (i.e. sandy loam soil) maintained hydraulic conductivities >9.1 cm/h. Winter operation consisted of all columns being subjected to −20 °C and then 1 °C repeatedly. Events were applied at an air temperature of 1 °C and, although frozen initially, more porous media experienced faster water breakthrough and ponding disappearance in winter indicating that hydraulic performance during intermittent warming periods in winter may be achievable. All columns’ hydraulic performance rebounded quickly in the subsequent summer. All columns successfully managed 1:2 year events in terms of infiltration rate, ponding depth and duration. Preliminary results also showed that both media have the potential to manage less frequent (1:5 and 1:10 year) events.

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来源期刊
Journal of Hydro-environment Research
Journal of Hydro-environment Research ENGINEERING, CIVIL-ENVIRONMENTAL SCIENCES
CiteScore
5.80
自引率
0.00%
发文量
34
审稿时长
98 days
期刊介绍: The journal aims to provide an international platform for the dissemination of research and engineering applications related to water and hydraulic problems in the Asia-Pacific region. The journal provides a wide distribution at affordable subscription rate, as well as a rapid reviewing and publication time. The journal particularly encourages papers from young researchers. Papers that require extensive language editing, qualify for editorial assistance with American Journal Experts, a Language Editing Company that Elsevier recommends. Authors submitting to this journal are entitled to a 10% discount.
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