Glutinous Rice Balls for Lantern Festival festival, although the flavor of the year has not yet dissipated and the temperature is still low, the construction scenes in full swing can be seen everywhere along the construction of the three sub-projects of Chongqing Wuzhen Expressway in China Railway Construction. The Wuzhen Expressway
from Wuxi County of Chongqing to Zhenping County of Shaanxi Province has a total length of 48.69 kilometers. People often say that "Shu Road is difficult", which is even more difficult for the construction of "Shu Road". One gas outburst tunnel and two high gas tunnels of Chongqing Wuzhen Expressway are located in the third section of Chongqing Wuzhen Expressway. The project will pass through cliffs, steep slopes and gullies, and through unfavorable geology such as coal seams, folds, laminated gravel soil, high ground stress, large deformation, karst caves and goafs. The Bijiashan Tunnel, located in Bailu Town, Wuxi County, is a two-way double-hole four-lane tunnel. The left hole is 4999 meters long and the right hole is 5000 meters long. It is the control project of the project. The tunnel passes through the gas outburst coal seam once and the low gas coal seam five times. There are unfavorable geological conditions such as gas, high ground stress, large deformation, karst cave and goaf. The geological conditions are extremely complex and the construction risk is extremely high. In order to ensure the safety of gas tunnel construction, when the construction reaches the goaf of coal seam, the project department adopts TSP advanced geological prediction combined with advanced geological drilling to find out the situation in front of the working face in advance, and dynamically monitors the gas concentration through the combination of manual detection and automatic monitoring and alarm system. And do everything possible to stop the epidemic, fight floods, fight landslides, fight high temperatures, with strong will quality and courage, race against time to seize the construction progress.
In addition to the complex geological conditions, landslides, rockfalls, poisonous snakes, poisonous bees and other dangerous situations occur at any time, which are also the "obstacles" faced by the project. In the QT15 borrow and spoil ground of the temporary project of the third contract section of Wuzhen Expressway, the operators told the author that since the construction of the project, it has experienced many crises such as rainstorm and flood attacks, landslides and circuit breaks, and the entrance of Wuxi Tunnel, the control project, has experienced two large water gushes and the exit has experienced huge water gushes, resulting in difficulties such as shutdown.
"When safety and quality conflict with other work, all work must give way to safety and quality."
The project department never forgets the "state-owned enterprise responsibility", successfully avoids all kinds of major risks, helps villagers avoid the loss of life and property, and has been affirmed and appreciated by the quality supervision brigade of Chongqing Traffic Bureau, local governments, supervisors and owners for many times.
It is reported that up to now, the civil engineering of Wuzhen Expressway in Chongqing has completed nearly 90% of the overall image progress, and is expected to be completed and opened to traffic in 2023, when the journey between Wuxi in Chongqing and Zhenping in Shaanxi will be shortened from three and a half hours to nearly one hour.
浙公网安备33010802003254号