Project background:Chizhou No.1 middle school was founded in 1902. Over the past 100 years, it has experienced ups and downs and made brilliant achievements. In 1912, it was cared and cared by Dr. Sun Yat-sen. in 1959, it was designated as "key middle school of Anhui Province". In 2000, it took the lead in becoming "model high school of Anhui Province". In 2006, Guichi middle school Qiupu branch was completed and put into use.　

Project construction index:

In the three-year implementation plan, the annual runoff control rate of Chizhou No. 1 middle school is 78%, and the rainfall control thickness is 30.0mm;
1. It has a large green area and site, and the available site is large;
2. The pipe network is relatively complete;
3. The water system and river channel on both sides are surrounded;
　　
Project control objectives:
　　
The control rate of annual runoff is 78%;
The annual ss control rate is 60%;
Rainwater recycling rate shall not be less than 15%;
　　
Sponge design strategy:
　　
The project fully considers the original vertical, reasonably divides the catchment area; through the establishment of lid measures such as rainwater atrium, rainwater garden, ecological parking lot, grass planting ditch, color pervious concrete, rainwater regulation and storage pool, it absorbs the rainwater within the planning scope, and reasonably optimizes the drainage system to discharge excessive rainwater, so as to achieve the purpose of rainwater "infiltration, stagnation, storage, purification, use and drainage"; it also controls and benefits rainwater At the same time, it beautifies and improves the site and functionality of the campus, and realizes the comprehensive benefits of sponge city construction.