市政技术2024，Vol.42Issue(10)：156-163,8.DOI:10.19922/j.1009-7767.2024.10.156
城市建成区海绵容量评估与排水系统优化设计
Sponge Capacity Assessment and Optimal Design of Drainage System in Urban Built-up Areas
宁波 1高徐军 2焦永宝 1吕鹏 2薛树红 2白向荣 1杨霄 2赵江锋1
作者信息
- 1. 中电建路桥集团有限公司,北京 100160
- 2. 中国电建集团西北勘测设计研究院有限公司,陕西西安 710065
- 折叠
摘要
Abstract
The concept of low impact development(LID)offers new solutions to urban water problems in China,such as flooding,non-point source pollution and water ecology damage caused by urbanization.Combined grey-green in-frastructure can reduce both runoff and pollution.However,there is a lack of quantitative basis for the sponge ca-pacity,the storage capacity of green infrastructure and the design of key parameters.This study employs SWMM model simulation,numerical calculation and on-site measurements to assess the background sponge capacity.By combining the comprehensive runoff coefficient method,the degree of water-sensitive areas are identified in the study areas.The proportion of land parcels are categorized as excellent,good,moderate,poor,and extremely poor in terms of sponge capacity is 8.6％,9.1％,24.6％,55.0％,and 2.7％,respectively.The majority of the drainage areas are graded as moderate and poor;Combined with field measurements and RECARGA model simulation,the sponge capacity of green infrastructure and the inflow parameters of gray facilities are clarified.The results indicate that green infrastructure shows a more pronounced response to rainfall intensity than changes of filler thickness.Sys-tematic scheme design is carried out from two aspects of optimization of the drainage pipe system and the gray-green combined drainage system.The study establishes a technical path for the technical path of gray-green combined drainage regulation,providing an effective basis for selecting key design parameters and formulating pipeline reno-vation schemes.关键词
城市建成区/海绵容量/灰绿耦合/分级调蓄/雨水径流/峰值流量削减Key words
urban built-up area/sponge capacity/gray-green coupling/graded storage/storm-water runoff/peak flow reduction分类
建筑与水利引用本文复制引用
宁波,高徐军,焦永宝,吕鹏,薛树红,白向荣,杨霄,赵江锋..城市建成区海绵容量评估与排水系统优化设计[J].市政技术,2024,42(10):156-163,8.
