ZHAO Ye,LOU Ming-yue,YANG Yi.Drainage Capacity Evaluation of Airport Rainwater Pipe Network Based on Multi-dimensional Hydraulic Model Method[J].China Water & Wastewater,2021,37(23 23):122-128.
Drainage Capacity Evaluation of Airport Rainwater Pipe Network Based on Multi-dimensional Hydraulic Model Method
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
23 23
Page:
122-128
Column:
Date of publication:
2021-12-01
- Keywords:
- rainwater pipe network; drainage capacity evaluation; multi-dimensional hydraulic model method; waterlogging risk evaluation; airport; three-dimensional flow field simulation
- Abstract:
- Aiming at the design project of satellite hall project and supporting station platform project of an airport in South China, to analyze the drainage capacity and waterlogging risk in the satellite hall and station platform area and improve the safe operation support capacity of the airport, an evaluation project of rainwater pipe network in the satellite hall and station platform area of the airport was carried out. Traditional drainage capacity evaluation of a pipe network usually adopts the reasoning formula method, which is suitable for the pipe network with a specific return period and certain conditions. However, roof of the airport satellite hall usually adopts large siphon drainage, and the instantaneous flow into the pipe channel is large. Therefore, the reasoning formula method is not suitable for drainage capacity evaluation of airport rainwater pipe network. A multi-dimensional hydraulic model was thus established to accurately evaluate the drainage capacity and waterlogging risk in the satellite hall and station platform area based on hydraulic model method. According to the evaluation results, terminal area pipe network reached the designed drainage capacity in the case of free outflow. However, there were still a few runway areas with high waterlogging risk. In the case of submerged outflow with 2 m water level above the outlet, the overloading risk of the pipe network in the planning area was large, there were many waterlogging points in the peripheral open channels, and the drainage in the core area was smooth. At the peak of a rainfall, the drainage channel had enough space to undertake the roof siphon rainwater. The siphon rainwater at the entrance of the roof siphon pipe led to a certain deviation of the drainage system, but it had no influence on the mainstream.
Last Update:
2021-12-01