Excavation of the third shield machine in pingshan section of line 14 of shenzhen rail transit

On October 11, China railway "endeavour no. 3" shield tunneling machine at the left line of kengsha fengjing, which means that the third shield in the pingshan section of shenzhen rail transit line 14 started smoothly, and the shield construction in the pingshan section of subway construction took another big step forward!

The shield tunneling machine "endeavour 3" will dig the left line of the shield tunneling from the wind well between the hangsha area of subway line 14 to the hangzi station. The diameter of the shield tunneling machine will be 6.98 meters, and the length of the left line is 3053 meters. The tunnel in this area has the characteristics of large excavation section, many underpasses (3 through the existing bridge, 2 through the existing building foundation), complex geological conditions, many risk sources, great difficulty, and extremely high requirements for the construction standard of shield tunneling.

In order to ensure the safe start of shield machine, the project department adheres to the principle of "safety first" and has organized experts to demonstrate the construction plan for many times and optimize various emergency plans. At the same time, targeted emergency drill, advance geological forecast and monitoring and measurement work, to ensure the smooth start of the left line shield in the kengsha wind shaft.

The total length of metro line 14 is about 50.34km, with 17 stations, 1 parking lot, 1 vehicle depot and 4 main substation. The whole line adopts automatic unmanned driving, with the maximum design speed of 120km/h. Among them, ping mountain line total length of 14.5 km, set 6 stations, car depot 1.

As the main line of shenzhen's "eastward strategy", line 14 is expected to be completed and open to traffic in 2022. By then, it will support the whole eastern shenzhen development axis, ping mountain will usher in a new development opportunity!