Source: Xinmin Evening News

(Reporter Yan Qiuqiu) This morning, New Year’s Eve from the beginning of the rail line 4 Helen Road station repair project into the second phase of the signal trackside facilities commissioning and adjustment and recovery. Shanghai Metro said the 10 o’clock last night, after more than 400 workers of the continuous construction, repair works have been completed and the track to adjust the concrete roadbed construction operations, the overall uplift of the track.

“Currently, all construction processes are under control, beginning seven (29) Line 4 will be able to recover Helen Road station operations.” relevant responsible person said this morning that the second phase of construction is expected to be completed tomorrow night. By overhaul plan, formally launched the train started from the 28th to debug. Debugging is correct, the first morning of the 29th shuttle recovery operations.

on the Shanghai Metro Line 4 Helen Road station used the “time-sharing segment overhaul outage” approach. The track cross-site uneven settlement occurs for two main reasons, one area in which the station itself, poor geological conditions, soil relatively weak; Second, there is just 4 out of the ground wire from the ground to the elevated section of the guide section of the tunnel and viaduct structure is different, leading to the junction are more prone to uneven settlement. Shanghai Metro said the city currently has 20 million or so to build the subway settlement monitoring points measured, long-term monitoring data, in a timely manner to carry out repair works. Now, Helen Road Station Line 4 the situation is still rare.