ZHOU Chuan-ting,YANG Dian-hai,ZHAO Jin-bao.Design Key Points of Terminal Regulation and Storage Project of Combined Drainage System in Central Urban Area of Tianjin[J].China Water & Wastewater,2020,36(16 16):91-94.
Design Key Points of Terminal Regulation and Storage Project of Combined Drainage System in Central Urban Area of Tianjin
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
16 16
Page:
91-94
Column:
Date of publication:
2020-08-17
- Abstract:
- Part of the central urban area of Tianjin is a combined drainage system, which cannot be modified into diverted drainage system. By building storage tanks at the end of the combined drainage system, the overflow frequency and flow of the combined drainage system can be decreased, and the pollution of the combined drainage system overflow to the Haihe River can be reduced. The design standard of the storage tank was 25 mm rainfall, and the total volume of the storage tank is 100 000 m3. By considering the storage capacity of the existing transfer pipeline, the storage capacity of the new storage tank was determined as 60 000 m3. According to the layout of the existing combined drainage system and the current situation of land shortage in the central urban area, the main structure of the storage tank was located below the river channel near the end of the system, and the whole underground closed design was adopted to restore the surrounding greening and current river course in the upper part after the construction of the storage tank.
Last Update:
2020-08-17