上海水磨工作室

4 months in advance! The longest tunnel of the high-speed railway in Guishan is smooth

Guiyang Net News is over 1200 days and nights, December 5, at 7:38 in the morning, with a cannon sound, Zuiyang to Nanning High-speed Railway, which is built by China Railway 18th Bureau, is exported in parallel guided cave ( Pingfid) successfully penetrated, 4 months in advance than the planned period, marking the remaining projects of the tunnel Zhengdong (the main structure of the tunnel), which laid a solid foundation for the whole tunnel. The Jiuwan Mountain No. 1 tunnel is located in Libo County, Qiannan Autonomous Prefecture, Guizhou Province, with a total length of 17012 meters (km), is the longest tunnel in the whole line of Guishan and even the Southwest China, and is also one of the largest high-speed rail tunnels in Southwest China. The entire number of top-neutralized engineering and one level risk management tunnel started 上海各区新茶工作室 construction on September 9, 2018. "The Jiuwan Mountain No. 1 Tunnel cross-land geological structure is complex and varied, the whole tunnel can be soluble, the rock solubility is medium to strong, the upper and urinary dark rivers, the surface development is large, and the risks of the inherstore.

"The person in charge of the Sports 18 of the China Railway 18th Bureau introduced that in order to ensure the safety and progress of construction, the project department uses the" 2 cross hole +1 drain hole + 2 ventilation shaft +1 exit parallel guided cave ". Mode. Parallel cave is an auxiliary tunnel (working surface) added for the tunnel Zhengdong (main hole).

This penetration is 9228 meters, which is one of the key projects of the high-speed railway of Guishan. It is parallel or approximate 上海龙凤桑拿网 in the direction of the tunnel. It is connected to the drain hole + 800 meters from DK184 kilometers, from two working area Digital into the tunnen. Since July 15, 2018, it began to construct the day. The pitizen hole has passed through the 6-set floor, 2 faults, 1 contact belt, encountered 260 large and small caves, the construction difficulty, high safety risks, construction pressure Heavy. In response to difficulties, the project department has a series of complex geological conditions and inconvenient transportation and convenient transportation and inconvenient transportation, etc. Difficult, set off the labor competition boom, achieving an average monthly-month-old monthly target, creating the highest record of the highest number of monthly provets up to 330 meters, and passing 4 months in advance than the planning 爱上海同城aish period.

"The penetration of the pilots will increase the centralized construction work surface, which greatly improves the construction organization, material transportation and tunnel ventilation conditions, effectively avoids the risk of rigid in the river, hull, and sharp mud."

"The person in charge of the project department introduced that as of December 4, the Jiuwan Mountain No. 1 Tunnel Zhengkong excavation has completed rice, accounting for 84% of the total length, only the remaining rice. After the leading, the residual project will be quickly promoted The whole tunnel can be accommodated.

Guishan high-speed rail is a high-speed railway, a high-speed railway, a high-speed railway in Guizhou, a national "medium-long railway network plan", "eight-year-old" high-speed rail main channel Baotou to Haikou channel, the rigid is 482 kilometers, of which In Guizhou, in 200 kilometers long, 283 kilometers long in Guangxi, the whole line is expected to achieve operational conditions at the end of 2023.

After the high-speed railway in Guishan, the high-speed EMU will then compress from Guiyang to Nanning. From now on, it is within 2 hours. For the improvement of Guizhou high-speed rail network, improve the travel conditions along the people along the line, promote the revitalization and economic and social highways along the line. Quality development will play an important role.

(Guiyang Daily Heading Media Reporter Zeng Qin) (Editor: Li Yongxin (Internship), Chen Kangqing) Sharing Let more people see recommendation reading.