The successful completion of Bayu tunnel of Sichuan Tibet Railway laid the foundation for the opening of Lhasa Linzhi section of Sichuan Tibet Railway in 2021

Yesterday (November 2) morning, Bayu tunnel, one of the key control projects of Lhasa Linzhi section of Sichuan Tibet railway, was successfully completed, laying a solid foundation for the opening of Lhasa Linzhi section of Sichuan Tibet Railway in 2021.

reporter Li Zhen: after five years of hard work, at 9:50 a.m. on November 2, with a loud explosion, the Bayu tunnel, one of the key control projects of the Lhasa Linzhi section of Sichuan Tibet railway, was successfully completed, which is also the third extra long tunnel with a length of more than 10 kilometers The Bayu tunnel of

connects Gacha county and qusong County of Shannan City, Tibet, with a total length of 13073 meters, a maximum altitude of 3500 meters and a maximum buried depth of 2080 meters. 94% of the tunnels are located in the rockburst area, which is difficult to construct. It is understood that rock burst is a complex dynamic disaster and a common geological disaster in the process of deep excavation, which has a great impact on the safety of construction personnel, equipment and project progress Qiao Zhibin, commander of Lalin Railway Engineering Headquarters of

China Railway 12th Bureau Group: since the first rockburst occurred in November 2015, we have accumulated a set of effective measures to prevent rockburst in the process of continuous exploration, which is to say, we can well respond to rockburst and prevent rockburst In addition to effectively dealing with rock burst, in the process of tunnel construction, builders also overcome the difficulties of high temperature, ventilation and smoke exhaust, and long transportation distance. The total length of Lhasa Linzhi section of Sichuan Tibet railway is 435.48 km, 106 km of which has been laid. 115 bridges and 41 tunnels have been built along the line.