ZHANGDi,HOUJing-ming,NINGLi-zhong,et al.Simulation of Effect of Road Rainwater Inlet Layout Scheme on Drainage Capacity[J].China Water & Wastewater,2023,39(9):97-102.
Simulation of Effect of Road Rainwater Inlet Layout Scheme on Drainage Capacity
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第9期
Page:
97-102
Column:
Date of publication:
2023-05-01
- Keywords:
- rainwater inlet; drainage capacity; longitudinal slope gradient; inlet number; runoff flow; numerical simulation
- Abstract:
- As an important part of urban drainage system, the layout of rainwater inlet is crucial to eliminating ponding in surrounding communities and roads. Therefore, a numerical model coupled with hydrological and hydrodynamic processes was used to investigate the drainage capacity of rainwater inlet at different road longitudinal slope gradient, inlet number and runoff flow. The larger longitudinal slope gradient of the road resulted in a worse drainage capacity of the rainwater inlet. In scenario of small runoff flow and five rainwater inlets (spacing of 20 m), the drainage flow of the rainwater inlet decreased from 55.64% to 21.05% when the longitudinal slope gradient of the road increased from 0.3% to 8%. The larger number of rainwater inlets resulted in a stronger drainage capacity. In scenario of small runoff flow and longitudinal slope gradient of 0.3%, the drainage flow of rainwater inlets increased from 25.60% to 55.64% when the number of rainwater inlets increased from 2 to 5 (spacing decreasing from 50 m to 20 m). The larger runoff flow resulted in a worse drainage capacity of rainwater inlet. In scenario of longitudinal slope gradient of 0.3% and five rainwater inlets, the drainage flow of rainwater inlet under small, medium and large runoff flow was 55.64%, 46.92% and 37.28%, respectively.
Last Update:
2023-05-01