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Seepage repairs at Metro stop
By Zha Minjie |
December 30, 2010, Thursday
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Print Edition
Print Edition
WATER seeping into a key Metro station on Line 11 has forced authorities to carry out emergency repairs.
Work was given the go-ahead after passengers trying to use the entrance and exit passage of Line 11's Zhenru station this week were left sloshing about in puddles.
"The water accumulates gradually, regardless of whether it's raining outside or not," said a frequent Metro passenger surnamed Ma.
The problem, which is related to subsidence, has occurred before but suddenly worsened this week, passengers said.
The area, about 10 square meters, has been condoned off with cleaners mopping up as a short-term measure. One cleaner said: "No sooner do we finish cleaning than water rises from underneath again."
Slip prevention mats have also been installed.
Tian Yifeng, general manager of the line operator, admitted there was a problem and apologized for the inconvenience to passengers.
Workers need to drain the water first, said Tian. Temporary repair work will be finished by New Year's Day, which falls on Saturday. Tian added that the operator is still investigating a permanent solution.
He said the problem of ground subsidence is common among a number of Metro stations on several lines.
"Some of the city's Metro stations are built on soft soil," explained Tian.
And while surveillance equipment is installed in Metro tunnels to detect subsidence and ensure operational safety, most stations do not have such monitors.
Poor construction work may also be a factor, Tian said.
Metro builders rushed to meet deadlines just before the World Expo opened in the city in May, as downtown construction sites were closed during the six-month event.
Line 11 went into service at the end of last year and runs from suburban Jiading District to downtown Jiangsu Road.
Riders said they have seen sand bags being used at other stations along the line.
Some commuters have taken their complaints online. "It's not unusual to see notices at stations saying 'Water, Please Be Careful,'" wrote a passenger in an online post.
Work was given the go-ahead after passengers trying to use the entrance and exit passage of Line 11's Zhenru station this week were left sloshing about in puddles.
"The water accumulates gradually, regardless of whether it's raining outside or not," said a frequent Metro passenger surnamed Ma.
The problem, which is related to subsidence, has occurred before but suddenly worsened this week, passengers said.
The area, about 10 square meters, has been condoned off with cleaners mopping up as a short-term measure. One cleaner said: "No sooner do we finish cleaning than water rises from underneath again."
Slip prevention mats have also been installed.
Tian Yifeng, general manager of the line operator, admitted there was a problem and apologized for the inconvenience to passengers.
Workers need to drain the water first, said Tian. Temporary repair work will be finished by New Year's Day, which falls on Saturday. Tian added that the operator is still investigating a permanent solution.
He said the problem of ground subsidence is common among a number of Metro stations on several lines.
"Some of the city's Metro stations are built on soft soil," explained Tian.
And while surveillance equipment is installed in Metro tunnels to detect subsidence and ensure operational safety, most stations do not have such monitors.
Poor construction work may also be a factor, Tian said.
Metro builders rushed to meet deadlines just before the World Expo opened in the city in May, as downtown construction sites were closed during the six-month event.
Line 11 went into service at the end of last year and runs from suburban Jiading District to downtown Jiangsu Road.
Riders said they have seen sand bags being used at other stations along the line.
Some commuters have taken their complaints online. "It's not unusual to see notices at stations saying 'Water, Please Be Careful,'" wrote a passenger in an online post.
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