SHI Zhen-bao,TAN Qiong.Formulation of Emergency Dispatching Plan for Waterlogging Prevention of Drainage System Based on Hydraulic Model[J].China Water & Wastewater,2020,36(15 15):93-99.
Formulation of Emergency Dispatching Plan for Waterlogging Prevention of Drainage System Based on Hydraulic Model
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
15 15
Page:
93-99
Column:
Date of publication:
2020-08-01
- Keywords:
- drainage system; waterlogging prevention; emergency dispatching; hydraulic model; drainage pumping station
- Abstract:
- In order to improve emergency dispatching and disposal capacity of the drainage system suffering from rainstorm and minimize non-point source pollution to rivers caused by rainfall, an emergency dispatching plan for waterlogging prevention of drainage system was formulated in Zhaojiabang and Luban drainage systems of the central urban area of Shanghai. Aimed at four-color early warning levels (blue, yellow, orange and red) of meteorological storms, the hydraulic model of drainage pipe network was used to analyze the key factors such as discharge capacity of sewage trunk system, regulation and storage capacity of the drainage pipe system, pre-falling water level of the system and water level of pumping station. In the case of blue warning, the proposed dispatching mode could fully guarantee the regional flood control safety and reduce the discharge of pump stations to rivers. In the case of yellow and orange warning, there was no waterlogging risk in Luban drainage system, and there were certain risks in low-lying areas (below 2.5 m) of Zhaojiabang drainage system. In the case of red warning, there was a certain waterlogging risk in low-lying areas (below 2.9 m) of the two systems, and it was necessary to take emergency measures such as rescue and avoidance in advance.
Last Update:
2020-08-01