At 8:28 on December 28, the Nanqin Tunnel of the XSZQ-4 bid section of the Shaanxi section of the West 10th High-speed Railway, which was constructed by China Railway 20th Bureau Group, was successfully completed. The tunnel is the first tunnel in Shangzhou District, Shangluo City, marking the construction progress of the project once again and laying a solid foundation for the early opening of the whole line.
The Nanqin Tunnel is located in Yangyuhe Town, Shangzhou District, Shangluo City, Shaanxi Province, with a total length of 7384 meters, a single-hole double-lane tunnel, the maximum buried depth of the tunnel is 100 meters, and the minimum buried depth is only 2 meters. The dark hole is dominated by grade and grade surrounding rock. The terrain is undulating, the mountains are high and the valleys are deep, the roads are rugged, and accompanied by shallow burial, bias and other bad geology, which adds a lot of difficulty to the construction progress. Li Pengdong, a tunnel professional engineer of China Railway First Survey and Design Institute, told reporters.
In the face of many difficulties, the project team gave full play to its subjective initiative, first, actively adjusted the construction organization to ensure that the general requirements of quality, safety and construction period were metThe second is to strictly implement the leadership system, set up a safety and quality self-inspection team, and conduct regular inspections on the production processes such as tunnel excavation, support, inverted arch, and second lining, so as to accurately grasp the tunnel construction dynamics and ensure that there are no blind spots in managementThe third is to further implement standardized management;The fourth is to set up a tunnel construction party member commando, with experienced old party members as the tunnel chief, give play to the vanguard and exemplary role of party members, speed up the construction progress, and ensure the safe and smooth passage of the tunnel. Project leader Li Zonghui introduced.
In order to ensure the smooth breakthrough of the tunnel on schedule and ensure the safety and quality of construction, the project has continuously optimized the construction plan, scientifically adjusted the construction plan, and actively promoted the use of "shotcrete scraper" and other "five small" innovative achievements and the application of "four unified" standard parts. The complete set of tunnel emergency systems such as emergency shouting has effectively improved the comprehensive prevention and safety management capabilities of tunnel construction, and provided a safe and powerful guarantee for tunnel penetration. At the same time, in order to practice the concept that lucid waters and lush mountains are invaluable assets, the project formulated and selected a scheme to set up a sewage treatment plant with priority at the entrance of the tunnel, and ensured the goal of zero pollution discharge of wastewater from tunnel construction through sewage diversion, classified discharge, and utilization, so as to achieve green mountains and green waters when coming and green waters and green mountains when leaving.
It is reported that after the completion and opening of the West 10 high-speed railway, Xi'an will arrive within 1 hour, and the running time of the train between Wuhan and Xi'an is expected to be shortened to 25 hours, to implement the strategy of promoting the rise of the central region, promote the construction of the "Belt and Road" and the development of the Yangtze River Economic Belt, strengthen the connection between the urban agglomeration of the Guanzhong Plain and the urban agglomeration in the middle reaches of the Yangtze River, drive the economic and social development along the line, and improve the layout of the national high-speed railway network.