LI De-shi,XU Lian-jun,TAO Tao,et al.Catchment Division Method and Flooding Simulation Analysis of Mountainous and Hilly Cities[J].China Water & Wastewater,2021,37(1 1):109-113.
Catchment Division Method and Flooding Simulation Analysis of Mountainous and Hilly Cities
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
1 1
Page:
109-113
Column:
Date of publication:
2021-01-01
- Abstract:
- When establishing drainage pipe network model in a mountainous and hilly city, researchers must take into account the problem of large rainwater catchments in the mountainous areas. Aiming at the characteristics of stormwater confluence in the mountain and the defects of non-linear reservoir conflux model, a catchment division method for the mountain based on isochrones was proposed, and stormwater in the mountain was discharged into the pipe network system through virtual nodes and pipes. An example of a drainage system in a district of Z city simulated by InfoWorks ICM software was given, and the effect of catchment division methods based on isochrones and conventional Thiessen polygon on the simulation results were explored. The simulation results were more consistent with the stormwater conflux process in the mountain area when the method based on isochrones was adopted, which had certain reference significance for the drainage capacity evaluation and urban flooding simulation of drainage pipe network in similar regions.
Last Update:
2021-01-01