How long is the Zhao Jialin Tunnel of Xicheng High-speed Railway?

Zhaojiayan tunnel with a total length of 7594 meters.

Xicheng high-speed railway key tunnel

(1) Tianhuashan Tunnel

The longest. Tianhuashan double-track tunnel, length 15.9 km. Import mileage DgK 108+888.4, export mileage DgK 124+877.

(2) Hejialiang Tunnel

The total length of Hejialiang Tunnel is12403m, with the entrance mileage DK297+ 190 and the exit mileage DK309+593. The maximum buried depth of the tunnel is about 750m, in which DK297+890.458~DK299+739.484 are located on the curve of R-8004.6m, and the rest are located on the straight line with a longitudinal slope of 20‰.

(3) Jin Jiayan tunnel

The total length of Jin Jiayan tunnel is 1205 1m, with the mileage of entrance DK449+883 and exit DK46 1+934.

④ Huang Jialiang tunnel.

The total length of Huang Jialiang Tunnel is11639m, with the mileage of entrance DK43 1+653 and the mileage of exit DK443+292. The design is 6‰, 20‰ uphill and -3‰ herringbone slope. The maximum buried depth of the tunnel body is about 620 meters. The tunnel is affected by oil and natural gas, and belongs to a high gas tunnel.

(5) Tanjiashan Tunnel

The total length of Tanjiashan Tunnel is 8,896 meters, with an entrance mileage of D6K36 1+350 and an exit mileage of D5K370+ 192. The tunnel is located between the provincial boundary and Guangyuan, and it is a double-line tunnel with a line spacing of 4.6m It is designed as a herringbone slope of 3‰,-18.7‰.

6. Guojiashan Tunnel

The total length of Guojiashan Tunnel is 790 1m, with an entrance mileage of D6K353+375 and an exit mileage of D6K36 1+276. It is designed as a herringbone slope of 3‰ and -6.3‰. The maximum buried depth of the tunnel body is about 505 meters.

(7) Zhaojiayan Tunnel

Zhaojiayan Tunnel has a total length of 7594 meters, with an entrance mileage of D5K37 1+086 and an exit mileage of DK378+680. It is designed as a herringbone slope of 3‰ and -4.5‰. The maximum buried depth of the cave body is about 590 meters [3]

Laoanshan tunnel

Lao Anshan Tunnel is located in the low mountain area at the southern foot of Qinling Mountains, in Foping County and ningshan county City, Shaanxi Province, with a total length of 15 16 1 m, which is the second extra-long tunnel of Xicheng Passenger Dedicated Line. The tunnel started construction on April 20 13 19, which is extremely difficult. It is the key and difficult project of Xicheng Passenger Dedicated Line, and it is also one of the six Class I risk tunnels in the whole line. At around 08: 03 on September 6, 2005, the Lao Anshan Tunnel, the key control project of Ancheng Railway Passenger Dedicated Line, which lasted for 29 months, was completed. The smooth running of the tunnel laid a solid foundation for the opening of Xicheng Passenger Dedicated Line as scheduled. [4-5]