Auxiliary transfer pump station of drainage tunnel in subway crossing

Abstract

The invention discloses an auxiliary transfer pump station of drainage tunnel in subway crossing. The auxiliary transfer pump station of drainage tunnel in subway crossing includes an upstream drain, an upstream flume, a diversion partition, a rack, a regulating gate, a stilling basin, a partition hole, a collecting basin, a wet-pit pump, a maintenance platform, an overflow tank, a downstream drain, a pressure drain pump, a pump interlayer, a sewage pump floor, an equipment transport channel, a pump lifting hole, a control board, a control cabinet, a manhole, a hole for hoist and a pump room. The auxiliary transfer pump station of drainage tunnel in subway crossing aims at features of an outlet tunnel in subway crossing, which are that displacement is larger, interval is long and embedded depth is deep. The auxiliary transfer pump makes combination of a drainage pumping station and a transfer pumping station come true. The auxiliary transfer pump station of drainage tunnel in subway crossing has many advantages, for example, water pump can be stopped when maintenance is needed, degree of automation is high, civil investment and construction difficulty can be diminished and safety and reliability of operating drainage can be improved.

Description

technical field [0001] The invention relates to an auxiliary and transfer drainage pumping station for a drainage tunnel in a subway crossing the sea section. In particular, the working mode switching is realized through automatic control and the pump can be stopped for maintenance without increasing the volume of a civil construction sump. It is suitable for the drainage type tunnel in the subway crossing sea section, which has the characteristics of large drainage, long section and deep burial, and improves the economy and reliability of operation drainage. Background technique [0002] With the rapid development of rail transit in Qingdao, Xiamen and other coastal multi-island cities, more and more rail transit lines have to cross the bay to connect island economies in the city, which requires the construction of many undersea tunnels. The water level of the subsea tunnel is generally high, and the water pressure of the tunnel is relatively high. Therefore, the waterproo...

AI Technical Summary

Problems solved by technology

However, the incoming water from the upstream tunnel of the transfer pumping station on both sides is completely intercepted in the transfer pumping station, and the pump shutdown and maintenance of the transfer pumping station cannot be realized. When the transfer pumping station fails, the drainage of the upstream structure cannot be removed in time

In other design schemes, in order to meet the pump stop maintenance of the transfer pumping station, it is necessary to increase the volume of the sump of the transfer pumping station and divide the sump into two spare parts for each other. This scheme increases the investment cost of civil engineering and construction Difficulty, and the excess volume separated cannot be effectively used daily, resulting in waste of resources

At present, there is no precedent for the optimized design of the auxiliary and transfer drainage pumping station for drainage tunnels in the subway crossing the sea area.

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