China News Network, Hangzhou, July 4 (Zhang Yuhuan and Zhang Bin) On the 2nd, due to heavy rainfall, the newly opened Hangzhou South Railway Station has caused localized rainwater backlogging to cause water accumulation, which has aroused public concern. On the 4th, Hangzhou Xiaoshan officially released news that the site of Hangzhou South Railway Station basically recovered at 23:30 on the 2nd. The incident did not cause casualties and did not affect the operation of the train. The primary reason for this was that the magnitude of the short-term heavy rain caused backflow of rainwater, and the existing drainage facilities could not meet the large amount of rainwater discharge requirements.
At 20:30 on July 2nd, heavy rainfall occurred in Xiaoshan city area, reaching the level of heavy rainstorm. The rainwater was poured back into the underground passage of West Square of Hangzhou South Railway Station, causing local water accumulation. After the water situation occurred, the Hangzhou South Railway Station Hub Management Committee and relevant departments rushed to the scene as soon as possible to start the overall emergency response plan for the public emergencies of the Hangzhou South Railway Station hub according to the dangerous situation, and organize the emergency rescue. At 23:30 on July 2, the water regime of Hangzhou South Railway Station was basically controlled, and the scene was basically restored.
According to a local report: On July 3, the Hangzhou South Railway Station Management Committee and relevant responsible departments conducted special seminars to ensure the passengers’ unobstructed passage and the normal operation of the South Railway Station, and initially identified the reasons for the rainwater backflow at Hangzhou South Railway Station.
One of the reasons is that the magnitude of short-term heavy rain caused rainwater to flow back. According to the data from the Meteorological Department, precipitation in the Hangzhou South Railway Station area is concentrated. The 12-hour rainfall is 106.2 millimeters and the hourly rain intensity is as high as 41.3 millimeters. The heavy rainfall caused the national railway station area to use a drainage pump and a DN100 drainage facility to drain all the rainwater. Water phenomenon.
Another reason is that the concentrated rainwater causes poor drainage. West Plaza drop-off platform and multiple elevators on the upper waiting floor are in the open air. A large amount of rainwater directly drops to the underground corridor area of West Plaza. At the same time, the drainage of multiple rainwater pipes at the platform level is also treated by the drainage pump supporting DN100 drainage facilities. The existing drainage The facility was unable to meet the demand for a large amount of rainwater discharge, which caused the water level of the accumulated water in the plaza to rise continuously and flow back to the underground corridor area, causing partial accumulation of water in the underground corridor.
The Hangzhou South Railway Station Management Committee said that for the above reasons, it will take the lead in coordinating the responsible units to propose rectification plans as soon as possible, and start the implementation as soon as possible; at the same time, on the basis of the existing emergency plan, it will arrange on-duty staff to be on duty 24 hours to increase the number of personnel The provision of materials, through the scientific configuration of temporary forced discharge pumps and other facilities, pay close attention to the rainy season, focus on the weather of typhoon storms, and promptly start the emergency plan to ensure that similar problems no longer occur. (Finish)