A number of shield tunnel sections of hefei rail transit line 5 were successfully completed

On September 2, according to the official website of hefei rail transit, recently, the shield tunnel construction of hefei rail transit line 5 has been successful, and several shield tunnel sections have been successfully completed, the total amount of shield construction has been completed more than 60%.

The left line of shield tunnel interval from huayuan avenue station to dalian road station is connected

On the afternoon of August 30, the left line of the shield tunnel from huayuan avenue station to dalian road station of line 5 was successfully completed, becoming the 34 section tunnel of line 5.

The left line is 1188 meters long, and the buried depth at the top of the tunnel is 9.42~12.00 meters. The shield machine started from the shaft at the north end of huayuan avenue station, and safely went down through the brick rain water tank culvert to receive at the shaft at the south end of dalian road station. During the construction period, the municipal railway group led the participating units to overcome the difficulties of shield dregs' outward transportation, reasonably planned the construction site, and completed the construction task of connecting the left line between the zones in five months.

Dalian road station to Beijing road station shield tunnel section left line through

On August 31, the left line of the shield tunnel from dalian road station to Beijing road station of line 5 was successfully completed, becoming the 35th tunnel of line 5.

The left line in this area is 1178.069 meters long, and the buried depth at the top of the tunnel is 11.2 to 20.6 meters. Yanhe north road to xingji irrigation station, then turn west to huafei avenue, to the end of the section Beijing road station east end well reception. Due to complex site environment and many surrounding structures, the requirements for attitude control and surface settlement control of shield tunneling are very high. In order to ensure the successful completion of the shield tunnel section, the municipal railway company led the participating units to carefully plan, constantly optimize the construction plan, adjust the driving parameters, and safely and stably cross xingji drainage and irrigation station and other risk sources.

The left line of shield tunnel interval from ziyun road station to zhongshan road station runs through

On the morning of September 1, the left line of shield tunnel between ziyun road station and zhongshan road station of line 5 was successfully completed, becoming the 36th tunnel of line 5.

The left line in the zone is 843.895 meters long, generally like a "V" slope. The tunnel is buried between 9.97 and 17.90 meters deep. This area belongs to the first-grade terrace of the river. The terrain along the route is open and slightly undulating. It mainly passes through the clay layer and the silty clay layer.

In order to ensure stable and controllable construction safety and quality, the municipal railway group organized construction units to take various effective measures to overcome difficulties and finally realize the smooth connection of the left line between the zones.

The left line of shield tunnel interval from huizhou avenue station to yungu road station is connected

On September 1, the left line of the shield tunnel section between huizhou avenue station and yungu road station of line 5 was successfully completed, becoming the 37th section tunnel of line 5.

The total length of the tunnel is 1256.032 meters, and the buried depth at the top of the tunnel is 9.2 ~ 22.3 meters. The section is laid along yungu road from west to east, mainly for residential areas and commercial facilities. Under the leadership of the municipal railway group, the participating units actively implement the national, provincial and municipal requirements for safe production, overcome the difficulties of limited earthwork transportation, strictly control the construction quality, and successfully complete the shield construction task.

So far, 23 stations on line 5 have completed the roof capping of the main structure. The total number of 33 shield tunneling machines in the whole line has reached 28 Wells, 26 of which have been used for tunneling, and 63.46% of the total amount of shield tunneling has been completed.