- Hangzhou subway operator says water seeped into underground construction site
- Zhejiang’s capital was scene of subway collapse that claimed 21 workers’ lives in 2008
Homes in a major city in eastern China were evacuated on Wednesday after water seepage at a subway construction site caused a main road to cave in and cut a gas main.
Authorities in Hangzhou, Zhejiang province, said dozens of residents feared for their homes as buildings cracked and swayed from the cave-in.
Videos posted to the Weibo microblogging network showed yellow smoke engulfing the neighbourhood as the road fell below street level. Authorities said Hangzhou’s gas supplier managed to close off the mains.
Hangzhou Metro Group, the city’s subway operator and the company overseeing the network’s expansion from four lines to nine for the 2022 Asian Games, said on Weibo that water seeped into a tunnel that connected two stations in the centre of the city, leading to the collapse.
That caused a hole under the carriageway and took the pavement down with it. Hangzhou Metro said homes around the site were cleared and authorities were monitoring for further danger.
It was not known how many residents were affected, but no casualties were reported.
Most residents were put up in a nearby school until accommodation could be arranged, the City Express newspaper reported, adding that several truckloads of cement were poured into the hole.
In November 2008, 21 workers were killed and 24 were injured when a tunnel Hangzhou’s Line 1 collapsed beneath an eight-lane road and river water rushed in. A court sent eight people to jail for terms of between three and 5½ years for negligence at the site.
Two years later at the same place, a truck driver died and another was injured as a pit collapsed.
In 2016, four construction workers were killed when mud flooded a pit at a station on Line 4.
A cave-in similar to Wednesday’s collapse overturned a truck at a construction site near Hangzhou railway station this month, but no one was injured, Hangzhou Metro said.
According to the China Association of Metros, by the end of last year, more than 5,700km (3,540 miles) of urban railway had been built in 35 mainland cities, of which more than a third – 2,100km – was completed since 2015.
Source: SCMP
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