Application Research of Metro Underground Station Central Drainage System

Rainwater sewage in underground station must be discharged in time to ensure the safety of metro operation. Conventional drainage system requires setting sump and lifting equipment, numerous layout location points and complex system. The station master wastewater pump room and interval wastewater pump room setting position is low, and civil engineering construction is difficult due to underground water level, while there are plenty municipal interfaces, causing complicated coordination. In addition, conventional drainage is poor in sealing. In view of the vacuum drainage system application cases in the metro, system integration is analyzed, and the metro station underground central drainage system is studied. Research results show that the rainwater sewage systems in all underground stations should be integrated, adopting central control and centralized discharge.