Line 5 of

Zhengzhou Metro Zhengzhou Metro () is a rapid transit rail network serving urban and suburban districts of Zhengzhou, the capital city of Henan province. It is operated by the state owned Zhengzhou Metro Group. As of June 2022, the network has 7 operational lin ...

() is a

rapid transit Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be c ...

line in

Zhengzhou Zhengzhou (; ), also spelt Zheng Zhou and alternatively romanized as Chengchow, is the capital and largest city of Henan Province in the central part of the People's Republic of China. Located in north-central Henan, it is one of the National ...

that runs in a loop around the city center. It is the only loop-line planned in the

system. The line opened on 20 May 2019. This line is the first

line to use the "A size" trains in

. "A size" trains are longer and have larger capacity than "B size" trains, which are used on other operational lines of

History

Construction of this line began on 18 December 2014. Trial operations (without passengers) started from 29 December 2018 and formal operations started on 20 May 2019. An infill station, Jingbeierlu station opened on 15 May 2021.

Incidents

On July 20, 2021, parts of the line was flooded during the

2021 Henan floods China's Henan Province experienced flooding between 17 and 31 July 2021 as a result of heavy rainfall. On July 20, Zhengzhou, the provincial capital, recorded of rainfall within an hour, the highest ever figure recorded since measurements bega ...

. Rainwater filled a subway

classification yard A classification yard (American and Canadian English ( Canadian National Railway use)), marshalling yard (British, Hong Kong, Indian, Australian, and Canadian English ( Canadian Pacific Railway use)) or shunting yard (Central Europe) is a railway ...

, which was located within a

goods station A goods station (also known as a goods yard or goods depot) or freight station is, in the widest sense, a railway station where, either exclusively or predominantly, goods (or freight), such as merchandise, parcels, and manufactured items, are lo ...

() 2.8 km away from the distressed site and connected to the mainline between Haitansi station and Shakoulu station with a branch tunnel, and eventually broke the water-resistant retaining wall between the yard and the connection part, flooding into the mainline tunnel and a train was trapped around 18:00. The conductor tried to operate the train back to the previous station but failed due to the activated ATS device. The water level in the car rose from the ankle to the position of chest, and the passengers, including children, elders and women in pregnancy, stranded in the car were trapped as the symptom of

hypoxia Hypoxia means a lower than normal level of oxygen, and may refer to: Reduced or insufficient oxygen * Hypoxia (environmental), abnormally low oxygen content of the specific environment * Hypoxia (medical), abnormally low level of oxygen in the tis ...

and

hypothermia Hypothermia is defined as a body core temperature below in humans. Symptoms depend on the temperature. In mild hypothermia, there is shivering and mental confusion. In moderate hypothermia, shivering stops and confusion increases. In severe h ...

began to appear while the flood outside and within preventing them from leaving. One passenger in the fore part of the train, where the water level was lower, broke the window glass to let the oxygen flow inward, by doing which the severe oxygen-lacking situation inside the carriage was relieved shortly before they were rescued. Four hours later, rescuers managed to make a hole on the ceiling of the train and the trapped people, especially those who were in danger, were able to leave the carriage. Then they got out of the tunnel in a row through the emergency evacuating platform alongside the subway rail. Rescuers were able to evacuate 500 people from the train, but 14 were killed. Line 5 reopened on September 15.

Stations

References

{{DEFAULTSORT:Zhengzhou Metro, Line1 Railway lines opened in 2019 2019 establishments in China Zhengzhou Metro lines Railway loop lines