Mechanical shield separation island type subway station drainage system

The invention provides a mechanical method shield separation island type subway station drainage system. The mechanical method shield separation island type subway station drainage system comprises a left line shield tunnel body, a right line shield tunnel body, a platform shield tunnel body, a left line local water collecting well, a right line local water collecting well, a waste water pump room and a waste water pool. According to the limitation of the shield form space, the existing space of the shield is fully utilized, station drainage such as structure seepage water, fire-fighting wastewater and flushing water is reasonably planned and collected, on the premise that the use requirement is met, a wastewater pump room is not independently added, the existing condition innovation thinking is utilized, the wastewater outlet path is reasonable, and the construction cost is low. The laying mode of the waste water pipeline is convenient for construction, installation and daily maintenance, and has good social