Following the successful exit of the "tiebing no. 1" shield tunneling machine, "tiebing no. 2", the last shield tunneling machine in charge of the construction of metro line 22 from qi-fu to guangzhou south railway station (hereinafter referred to as "qi-guang section"), also completed the construction task successfully on May 18, marking the completion of the double-line tunnel in this area. This is the longest shield range on the whole line and the first to realize the connection between the two tunnels.

At 11:8 am on 18th, with the "start to advance" command issued, wuhan metro line 16 chuan river basin station - dun mouth station section right line shield tunnel cylinder began to elongate, the blade began to rotate after touching the palm surface, for wuhan metro line 16 early completion of a solid step.

At 9:30am on May 13th, xiamen rail transit line 6 (maluan bay section) jimei island station to xibin intersection station, the two lines of cross-sea shield tunnel interval through! The length of this section is about 7600 meters. The tunneling task of the cross-sea tunnel has been completed successfully. Another difficult and high-risk project of xiamen metro has been overcome!

At 6 o 'clock in the morning of May 10, in the receiving well at the west end of luotang road station, the "pioneer" shield tunneling machine slowly rotated the shield tunneling blade to break through the ground, and the right line of the shield tunneling section of qinglian street ~ luotang road, d2w-ta04, nanjing metro line 2 was successfully connected. So far, the west extension of line 2 realized the completion of the two-way tunnel between tianbao street station ~ qinglian street station, qinglian street station ~ luotang road station, laying the foundation for the early opening of the line.

Recently, the ningju intercity rail transit project ushered in the first major construction node after the resumption of work, east street station ~ jurong station interval left line "eight bureau 40" shield machine smoothly started.

In the section of longhua station of shaoguang station of changsha line 6, shield tunneling has been started. In addition to the already operating changsha metro lines 1, 2 and 4, the construction of other lines is also making full progress.