Nine Mian Expressway Key Control Engineering White Horse Tunnel exceeds 10,000 meters

On the morning of September 28, the key control engineering White Horse Tunnel from Jiuzhaigou to Mianyang Expressway exceeded 10,000 meters, laying a solid foundation for the completion of the entire project.

The White Horse Tunnel exceeds the 10,000 -meter mark

It is understood that the Baima Tunnel is the longest road tunnel under construction in Sichuan Province with a total length of 13013 meters. During the construction process, more fracture bands are crossed. The geological conditions are complicated. Geological disasters such as surrounding rock deformation, coupled with the frequent occurrence of natural disasters such as earthquakes, mudslides, and general floods, construction and construction are difficult.

Discussion tunnel construction plan

"In response to the complex and changeable geological environment, the project compiled special construction plans such as tunnel crossing faults, high ground stress and gas strata in advance, and used advanced geological forecasting as a key process during the construction process. According to Li Guanji, the person in charge of the Nine -Mian Expressway project of China Railway, the White Horse Tunnel has achieved a Ping An Tiger 10,000 meters in the case of 98%of the length of the 5th -level surrounding rock, which has laid the foundation for the entire Tunnel of the White Horse Tunnel.

Excavation

It is understood that the total length of the Jiumian Expressway is about 240 kilometers in length, starting near Qinglong Bridge in Guoyuan Township, Jiuzhaigou County, and Pingwu County, Beichuan County, and Jiangyou City, Pingwu County, Beichuan County, Mianyang City, and in Zhangjiaping, Mianyang City It started in April 2016 and is expected to be completed in 2023. After being opened to traffic, the time from Mianyang to Jiuzhaigou was shortened to 4 hours. It will further strengthen the revitalization of the tourism industry in the northwest of Sichuan, the interaction between the Chengmian, and the regional tourism industry along the line to promote economic development. (Photo/Wen Yang Zhiyou Wu Wanchao)

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