ZENG Yu-jiao.Research on Rainwater and Sewage Diversion Transformation in the Hutong Cottage Area of Beijing Old Town[J].China Water & Wastewater,2020,36(14):56-60.
北京老城胡同平房区雨污分流改造研究
- Title:
- Research on Rainwater and Sewage Diversion Transformation in the Hutong Cottage Area of Beijing Old Town
- Keywords:
- Hutong cottage area; CSO pollution; rainwater and sewage diversion transformation; Hutong road drainage
- 摘要:
- 北京老城区现状排水系统大部分为雨污合流系统，汛期溢流污水常对下游河道造成一定程度的水环境污染。胡同平房区作为北京老城区的主要建筑代表形式，其排水系统的雨污分流改造工程存在一定的困难，胡同通常较窄、地下空间狭小，无法满足市政管线的敷设要求。因此，有必要结合老城胡同平房区的实施条件尽可能选择适宜的形式实现雨污分流改造。分析了北京老城胡同平房区现状排水系统存在的问题及雨污分流改造的难点，总结了胡同和平房院落内的雨污分流改造方式。并以北京南锣鼓巷地区的雨污分流改造为实例，采用模型技术及竖向优化的方法,探索采用管沟和胡同路面排水相结合的方式实现老城胡同平房区的雨污分流改造，为老城区的雨污分流改造提供思路和技术方法。
- Abstract:
- Most of the current drainage systems in Beijing old town are combined systems. In the flood season, the overflow often causes a certain extent of water pollution to the downstream rivers. As the main representative form of Beijing old town, Hutong cottage area has certain engineering difficulties in the rainwater and sewage diversion transformation. Most of the Hutong areas have narrow width and limited underground space, which cannot meet the laying requirements of all municipal pipelines. Therefore, it is necessary to combine the implementation conditions of Hutong cottage area to select the appropriate form to transform the rainwater and sewage drainage system. This paper analyzed the existing problems of the drainage system and the difficulties of the rainwater and sewage diversion transformation in the Hutong cottage area of Beijing old town, and summarized the transformation mode of rainwater and sewage diversion in the Hutong road and courtyard. Taking the rainwater and sewage diversion transformation in the Nanluoguxiang area of Beijing as an example, this paper used model technology and vertical optimization methods to explore the combination of pipe drainage and road drainage to meet the rainwater and sewage diversion in the Hutong cottage area, which could provide the transformation ideas and technical methods for the combined sewer separation of the old town area.
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