New progress has been made in the construction of the Xiyan High -speed Railway

The picture shows the construction site. Photo by Zhang Wei

China News Service Xi'an, June 23rd (Dangtian Jiao Jiao Guo Yinhu) After 312 days of fighting, the West Extension High -speed Railway was successfully connected on the 23rd.

The west extension high -speed railway is located in the territory of Yijun County, Tongchuan City, Shaanxi Province. It is 523.62 meters in length. It is the Loess Tunnel and started construction on August 15, 2021. The tunnel crosses the loess beam, the north is high and low, the terrain is undulating, and the geological conditions are all -class enclosures, the maximum buried depth of 80 meters, and the soil has a small adhesion and poor self -stability. During the tunnel excavation process, it may be possible There are collapse and high safety risks.

The picture shows the construction site. Photo by Zhang Wei

In order to ensure the safety of tunnel construction, the construction unit Xichengke Shaanxi Company organized tunnel experts to investigate the geological situation on the spot many times, and developed construction technical solutions for the characteristics of the loess tunnel. The surveillance measurement of the tunnel surrounding rock is continuously optimized through data analysis.

In order to prevent the risk of tunnel deformation and collapse, the construction unit of the China Railway Third Bureau West Extension High -speed Railway Project Department strictly implements the construction principles of "first detection, governing super, shorter ruler, weak disturbance, strong support, and diligent measurement". Digging noodles, and using advanced small catheters, steel arches, etc. to strengthen the strength of the soil layer of the palm. With the joint efforts of all participants, the Renjiatai Tunnel went through smoothly.

The picture shows the construction site. Photo by Zhang Wei

Xi'an to Yan'an high -speed railway is the first high -speed rail of the old revolutionary district of Shaanxi. It is an important part of the national high -speed railway network bag (silver) sea high -speed railway channel. The important component of the main skeleton of the font high -speed rail network is a key construction project in the "Fourteenth Five -Year Plan" period. The total length of the line is 299.8 kilometers. The construction standard is a dual -line high -speed railway with a design speed of 350 km/h.

After the establishment of the line into operation, the operation time from Xi'an to Yan'an will be shortened from the current two and a half hours to about 1 hour. It is of great significance to optimize the national high -speed railway network layout, enhance the advantages of Shaanxi Province, and the national railway network hub.

(Source: China News Network)

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