LIUYun-fan.Design Methodology for High-Low Shunt Storage and Drainage of Roof and Pavement Rainwater[J].China Water & Wastewater,2025,41(6):57-63.
Design Methodology for High-Low Shunt Storage and Drainage of Roof and Pavement Rainwater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第6期
Page:
57-63
Column:
Date of publication:
2025-03-17
- Keywords:
- roof rainwater; high-low shunt; storage and drainage; FLUENT software
- Abstract:
- In order to solve the problem of insufficient design return period of existing municipal drainage pipelines, this paper presented a design method for the high-low shunt storage and drainage of rainwater from rooftops and pavements. By leveraging the high potential energy of roof rainwater, an independent pressure drainage system was constructed, characterized by small pipe diameter, shallow burial depth, and no reliance on external power sources. Particularly in densely built-up old urban areas, this system could effectively mitigate peak flows within existing pipe networks, reduce construction cost and complexity, and significantly enhance the overall return period of the drainage system. In addition to mitigating the risk of waterlogging, this approach also established favorable conditions for the optimal utilization of high-quality rainwater resources from rooftops. FLUENT was employed to simulate the system’s operation under rainfall conditions corresponding to various return periods, analyze the operational characteristics of these scenarios, and establish the design boundary conditions.
Last Update:
2025-03-17