42 days in advance!The Gorgeous High -speed Camp Pan Mountain Tunnel undertaken by the Seventh Bureau of China Construction smoothly penetrated

Henan Daily client reporter Meng Xiangdong Diao Liangzi

On August 19th, the right hole of the Tenth Panshan Tunnel in the Seventh Board of China Construction Seventh Bureau achieved advanced 42 -in -the -ahead of the right hole. Victory.

It is understood that the gorgeous highway is one of the major engineering projects of the Yunnan Provincial Government, and the “Belt and Road” construction key project. The Yingpan Mountain Tunnel is a separate two -way four -lane highway tunnel. The left line is 11272m long, the right line is 11310m, the highest altitude is 2543m, and the maximum burial depth is 877m. It is a major control project of gorgeous high -speed high -speed speed and is the first long tunnel of Chinese architecture.

Fighting at 2100 days and nights, more than 2,000 participants participated in the construction process. Since the tunnel entered the cave in December 2016, the tunnel has successively overcome the crushing belt, burst mud, collapse, rock explosion, geothermal, gas, and soft rock deformation. There are many problems such as difficulty in ventilation of special tunnels, large amounts of water, and long -distance drainage of diagonal wells.

In March 2019, Yingguanshan Tunnel 2#Xianjing Worker District suddenly surged water and mud, with an average of about 70,000 cubic meters per day, and the total amount of water can reach more than 11 million cubic meters. In order to solve the problem of surging water, the project set up the scientific research project of the Ministry of Construction "The Research on the Treatment of the Special Technology of the Special Fushuang Rock Rock Dissan Tunnel Crowding Well," has been conducted more than 30 times to discuss, and finally the four -stage leakage method successfully overcome the world -class leakage problem. , Accumulated valuable experience for the construction of a special rich rocky rock -soluble tunnel.

It is understood that after the completion, the driving time from Lijiang to Panzhihua from Yunnan to Sichuan will be shortened from the original 6 hours to 2 hours. The construction of western Yunnan Tourism Ring, the Lichuan Economic Corridor, the Golden Economic Corridor of the Jinsha River, and the construction of the Tourism Economic Circle of Daxiangli La are all important significance.

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