WU Si-yuan,LUO Hui-yun,WANG Jian-fu.Application of Drainage Model in Design of Courtyard Sponge Transformation Scheme[J].China Water & Wastewater,2020,36(19 19):102-108.
Application of Drainage Model in Design of Courtyard Sponge Transformation Scheme
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
19 19
Page:
102-108
Column:
Date of publication:
2020-10-01
- Abstract:
- A design goal of a courtyard sponge transformation scheme in Changde was decided by problem-oriented approaches. Catchments were divided based on the analysis of current terrain, and low impact development (LID) facilities were set up based on the principle of source dispersed control and addition of new drainage overflow facilities. After the scheme was determined, DigitalWater Simulation was used as a tool, and long and short duration rainfall data and annual rainfall data with different return periods were input to construct a sponge city planning drainage model. Hydrology and water quality were evaluated afterwards. The results showed that the sponge transformation scheme of the courtyard was reasonable and feasible. According to simulation results of rainfall data in a typical year, the volume capture ratio of annual rainfall achieved 86.3% and the removal efficiency of annual total SS was 48.5%, which met the requirement of sponge city construction goal.
Last Update:
2020-10-01