Shenzhen Rail transit line 12, the second section of the realization of double lines through

On July 17, the shield on the right line of Shenzhen Metro Line 12 was successfully completed (i.e. Heping Station - South Exhibition Station).

So far, the realization of double-line penetrating in hehui interval is also the second shield interval of the whole line to realize double-line penetrating.

As an important link between Suiguan-Guan-Shenzhen Intercity Railway and Shenzhen International Convention and Exhibition Center, the Zone is connected to the International Convention and Exhibition Center in parallel with the supporting exhibition lines. Therefore, the smooth development of shield receiving and traffic clearing in this area is crucial to the construction progress.

The right line shield between the area is about 1.4 kilometers long, its shield construction difficulty is large ↓

The minimum clear distance between the tunnel and line 20 is only 3.8 meters, and it needs to pass through the closure river about 70 meters wide.

It is required to pass through the leisure passage in the exhibition area with a small net distance. The net distance between the tunnel and the floor of the passage is about 4.8m.

Many structures and pipelines, such as the underpass integrated pipe gallery, sub-high voltage gas pipeline, large-diameter sewage pipe, 110kV power pipeline, etc.

The "Pioneer III" shield tunneling machine in this area was launched on December 25, 2019, and opened on July 17, 2020, lasting for 206 days.