The Xi'an Tunnel of Hangzhou Wen Railway smoothly penetrates smoothly

Correspondent Ma Ming Liu Jinzhai Shan Shan Du Hongyang

On June 21, the Hangzhou -Wenzhou High -speed Railway Xi'an Tunnel, which was built by the 22nd Bureau of China Railway, successfully penetrated, marking new progress in the construction of the Hang Wenwen Railway Tunnel project, laying a solid foundation for the completion of the project on schedule.

The Hangan Tunnel Xi'an Tunnel smoothly runs through

The total length of Xi'an Tunnel is 2021.28 meters, and a single work surface is used. The inlet section of the tunnel is a high -steep slope with shallow biased terrain. The export section is located in the Beauty Valley Scenic Area. The environmental protection level is high and the construction organization is extremely difficult. The tunnel cave is crushed through 2 strong richer water broken layers, two -sectional density zone, complex geological conditions, large differences in the surrounding rocks, and frequent transformations of the process.

Panorama

Tunnel

In order to solve the construction problems of the complex geological geology, high risk of muddy and mud, and many hidden dangers of blocks, the project department has organized many expert review meetings to discuss the construction plan. Measures such as pulp, predecessors, and tube sheds in the cave body escort the smooth construction of the tunnel. During the construction process, the builder captured the tunnel hole one by one, and the tunnel hole was shallow and biased. The surrounding rock loose and collapse and other difficulties were effectively solved. A series of construction problems.

Standardized operation in the cave

The project department also actively innovatively applied micro -reform techniques such as the full section scanner, the steel arch locking anchor tube guidance frame, and the elevation arched steel bars to locate the fetal frame, which further improved the construction efficiency.

The Xi'an Tunnel is one of the preliminary faces of the Hangzhou -Wenwen Railway. The project department implements the management system of "one cycle, one analysis, one cycle and one plan" by exploring and innovating. "Connection" effectively improves the quality and construction efficiency of the project, and effectively solves the construction problems of the initial support, the empty hole behind the first branch, the initial spray anchor concrete, and other construction problems. The owners and supervisory units are highly praised.

The Hang Wen High -speed Railway is 331 kilometers long and the design speed is 350 kilometers per hour. The line starts with the Hangzhou South Station Comprehensive Hub. Finally, Wenzhou Airport is a backbone road network, intercity and tourism function of the national "Middle and Long -term Railway Network Plan". High -speed railways will form a backbone intercity rail transit line that radiates from the core area of ​​the Yangtze River Delta from the core area of ​​the Yangtze River Delta, which will be of great significance for creating the "one -hour" transportation circle in Zhejiang Province and promoting the development of the Yangtze River Delta urban group.

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