Taiyuan-Jiaozuo high-speed railway

The tunnel is single tunnel with double lanes 

Length: 8500m 

Design speed: 250km/h 

Surrounding rock: GradeIII，Grade IV 

The surrounding rock is poor and cracked 

The single cycle drilling and blasting time is about 2.5 hours, which is stable & fast.

Jinpen Tunnel of Zhengzhou-Wanzhou

High-speed Railway 

This three-boom drill jumbo is designed and manufactured with the computer-oriented system, which can optimize drilling parameters according to the geological changes, form geological reports and assist in the establishment of the tunnel big data geological database Moreover, the optimized design of operator cabin and control system improves the comfort of the operator, drilling efficiency and positioning accuracy. 

Ganxigou Tunnel of Zhengzhou-Wanzhou

High-speed Railway 

Ganxigou Tunnel is located in Fengjie County, Chongqing City. Total length: 11883 meters, dual-line tunnel. 

Spanning three nature reserves, two geological parks and one water resources protection area. 

Tunnel geology is bedding, bedding bias, rock pile, karst, through sandstone shale, argillaceous sandstone, mudstone limestone and other strata, karst.

Grade V, Grade rv; Grade N: 1353m, 8210m, 2320m 

Ganxigou tunnel is constructed by four working faces:

No. 1 adit ＋No.2 adit + No.3 adit + exit

Xiangluping Tunnel of Zhengzhou-Wanzhou

High-speed Railway 

Xiangluping Tunnel of Zhengwan High-speed Railway is located in Shuangyan Village, Gaoqiao Township, Xingshan, Hube1

-Length of the main line: 8734.006m 

-Design speed of the main tunnel: 350km/h 

-Double-lane tunnel 

The level of surrounding rock is mainly Grade IV and V.