Urban subway anti-backflow dewatering and drainage device and drainage method

Abstract

The invention relates to the technical field of urban subway drainage, in particular to an urban subway anti-backflow water draining device and method. The device comprises a side retaining wall, a step structure, an air bag and a rainwater monitoring system. The side retaining wall is located at the entrance and exit of the subway station and connected with the side wall of the entrance and exit of the subway station. And a pedestrian path for passengers to pass through is arranged between the pair of side retaining walls. And side grooves for accommodating the air bags are formed in the inner sides of the side retaining walls and the upper platform. When the rainfall is suddenly increased and the water level information received by the monitor reaches the specified water level, the air bag pops up and expands to form a water retaining structure, rainwater is blocked on the outer side of the entrance and exit of the subway station, the internal structure of the subway station is protected, and the rainwater is prevented from flowing backwards. The rainwater monitoring system is high in automation degree, free of human participation and interference, capable of saving manpower and material resources, convenient and fast to use, wide in application range and capable of improving drainage facilities at the entrance and exit of the subway station and improving the running safety of the subway station.

Description

technical field [0001] The invention relates to the technical field of urban subway drainage, in particular to an urban subway anti-backflow drainage and drainage device and a drainage method. Background technique [0002] At present, the entrances and exits of subway stations are mostly flush with the road surface, using sewage wells, grid structures and other drainage. During heavy rains, foreign objects such as plastic bags rush to the drainage outlet with the water flow formed by the accumulation of rainwater, which is easy to block the entrance and exit drainage facilities of the subway station, and part of the rainwater is poured into the subway station, thereby affecting the normal operation of the subway. As a result, it is necessary to further improve the drainage and drainage system at the entrance and exit of urban subways to avoid frequent occurrence of urban subway safety problems. [0003] After searching, the Chinese patent document CN212614426U discloses a f...

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Problems solved by technology

[0006] Although the above-mentioned water barrier device is arranged on the ground of the subway entrance or the threshold of the subway entrance, and is connected with the subway facilities as a whole, it can be used as a general passage at ordinary times, which is conducive to improving the space utilization efficiency of the subway, but the degree of automation of the device is not high. Lack of autonomy in emergencies when rain falls

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