XU Lei,WU Zheng-song,SHAO Zhi-yu,et al.Design Method and Application of Roadway Drainage Path Based on Coupled Hydraulic SWMM Model[J].China Water & Wastewater,2021,37(1 1):114.
Design Method and Application of Roadway Drainage Path Based on Coupled Hydraulic SWMM Model
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
1 1
Page:
114
Column:
Date of publication:
2021-01-01
- Abstract:
- The existing design method of roadway drainage path is only applicable to separate drainage of road and neglects hydrodynamic interaction between open channel flow in the roadway and pressure flow in the underground drainage pipes. Therefore, a hydraulic drainage model of roadway open channel flow coupled with pipe pressure flow based on SWMM was proposed to design the roadway drainage path to cope with extreme rainfall events. In a case study in a mountain city, a hydraulic model of stormwater pipeline based on SWMM was constructed to simulate waterlogging in a 50-year rainfall scenario, and the distribution of waterlogging prone points was identified. On this basis, according to the vertical analysis and hydrologic analysis of waterlogging area and combined with the drainage capacity of the pipeline, the roadway drainage path system was set up to build the hydraulic coupled drainage model. The coupled drainage model was then used to optimize the design parameters of the drainage path, and the simulation results under different scenarios were compared to obtain the drainage path in line with the actual situation. Finally, a design scheme of the drainage path was determined. The case study indicated that the design of the roadway drainage path based on the coupled hydraulic model considered hydrodynamic interaction between open channel flow and pipeline pressure flow and their flow exchange, reflected the actual running state of the combined drainage system of road and pipeline under the condition of extreme heavy rain, which maked the design more systematic and reasonable.
Last Update:
2021-01-01