Today, major good news came from the Latri high speed ...

July 9 pm 16 pm

With a cannon

Constructed by the Fourth Bureau of China Railway

Latin High Speed ​​Phase II Specialties (above 3000 meters)

Rendo Tunnel to realize dual -line penetration

It marks the middle section of the La Ri highway

Obtain another major progress

The second phase of the Lathe Day high -speed speed is the middle section project. From the Chabara service area to the Dazhaka Village, wearing the La -Japanese Railway and crossing the Yarlung Tibetan River. The Yarlung Zangbo River Bridge is 6, and it is difficult to build. As of July 8, 2022, the middle section of the project has accumulated 61.28%of the planned investment. This year, the output value has been completed 2.433 billion yuan, and the output value is 2.567 billion yuan in the second half of the year.

It is understood that the Rinbu Tunnel is the heavy difficulty of the construction of the second phase of the Latin high -speed speed. It started in June 2020. The left -line tunnel was 3380 meters, the right tunnel was 3355 meters long, and the average length was 3367 meters. The method of excavation, the tunnel surrounding rocks are mainly level III, IV, and grade, and the geological conditions are complex and changeable.

"In the construction process, we can solve the problem of hypoxia in the cave through measures with high -pressure oxygen compartment, plateau -specific fan, and other measures to ensure the health of the construction staff; through design changes, the geological conditions of the tunnel entry into the hole are mostly. Difficulty; through strict control of the tunnel's feet, strengthening drainage drainage, strengthening duty and investigation, etc., solve the problem of poor geological conditions and staged water in the plateau tunnel. " The project manager Xilang Ming said that in the next step, we will implement the linked chart operation and reverse construction period. The main project will end at the end of this year. In the first half of next year, the construction period will be prepared to end the construction period in half a year in advance.

Li Zhong, chief engineer of the Latri Headquarters, said that the road base project is planned to be completed this year. The lower part of the bridge engineering is planned to be completed within this year. The upper structure prefabricated beam stand is 90%. It is planned to penetrate 13 stations this year, and the road engineering construction station is completed, with 70%of the preparation.

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