Chinanews.com Lhasa, April 7 (Zhang Wei, He Penglei, Gongsang Lam) At 11 a.m. on April 7, the Sichuan-Tibet Railway Lhasa-Lingzhi Section (referred to as the "Lalin Railway") key control project Milin Tunnel, Tibet The Karma Tunnel was successfully opened on the same day. So far, 47 new tunnels with a total length of 216.5 kilometers have been opened on the entire Lalin Railway.
The picture shows that the Milin tunnel of the Lhasa-Ningzhi section of the Sichuan-Tibet railway is currently undergoing excavation. Photo courtesy of China Railway 19th Bureau
It is reported that the Lalin Railway has a total length of more than 400 kilometers. It is the first electrified railway in Tibet. The design speed is 160 kilometers per hour. The total length of the bridge and tunnel is about 300 kilometers, accounting for nearly 75% of the total length of the line.
The picture shows the Lalin Railway (data map) that is undergoing track laying operations. Photo by He Penglei
According to Zhang Wei, chief engineer of the Lalin Railway Cooperative Construction Project Department of the China Railway Eryuan Engineering Group Co., Ltd., more than 90% of the Lalin Railway is located on a plateau with an altitude of more than 3000 meters. Among the above-mentioned 47 tunnels surveyed and designed by the unit, there are 14 high-risk tunnels and 6 extra-long tunnels with a length of more than 10,000 meters.
The picture shows the Lalin Railway (data map) that is undergoing track laying operations. Photo by He Penglei
The picture shows the Milin tunnel from the Lhasa to Nyingchi section of the Sichuan-Tibet railway before it opened on April 6. Photo by He Penglei
The construction party of the Milin Tunnel Project, He Xu, the commander of the Lalin Railway Command of China Railway 19th Bureau Group Co., Ltd., told reporters that as one of the six 10,000-meter long tunnels that is the most difficult to build on the Lalin Railway, the Milin Tunnel has been started since 2015. Since the construction, the construction workers have not been afraid of the hardship of the environment, and have successively overcome the difficulties of world-class tunnel construction such as rockburst prediction and prediction, crossing moraine layers and aeolian sand.
The picture shows the Milin tunnel from the Lhasa to Nyingchi section of the Sichuan-Tibet railway before it opened on April 6. Zhang Weishe
The picture shows the Milin tunnel from the Lhasa to Nyingchi section of the Sichuan-Tibet railway before it opened on April 6. Zhang Weishe
It is reported that after 64 months of construction, the Lalin Railway builders continue to increase scientific and technological research and explore innovative technological methods for the special geological environment of the plateau, and obtained 32 patents (including 13 utility models and 19 inventions). Has gained a lot of mature construction technology and management experience.
The picture shows that at 11 a.m. on April 7, the Milin tunnel of the Lalin section of the Sichuan-Tibet railway passed through smoothly, and the construction personnel of the 19th Bureau of China Railway Group met successfully. Photo by He Penglei
The picture shows that at 11 a.m. on April 7, the Milin tunnel of the Lalin section of the Sichuan-Tibet railway passed through smoothly, and the construction personnel of the 19th Bureau of China Railway Group met successfully. Photo by He Penglei
Zhu Jintang, the deputy general manager of the Tibet Railway Co., Ltd., the owner of the Lalin Railway Project, said that the completion of the entire Lalin Railway tunnel will not only lay the foundation for the smooth progress of the entire Lalin Railway and the completion of the scheduled quality assurance, but also the natural environment and geological conditions. 3. The construction difficulties are very similar to the Lalin Railway, which plays an important role in the construction of the Sichuan-Tibet Railway from Ya'an to Linzhi.
The picture shows the exit of the Milin tunnel on the Lalin section of the Sichuan-Tibet railway on April 7. Photo by He Penglei
The picture shows that at 11 a.m. on April 7, the Milin Tunnel and the Tibet-Garga Tunnel, the key control projects of the Lhasa-Linzhi section of the Sichuan-Tibet Railway, were successfully opened on the same day. So far, 47 new tunnels with a total length of 216.5 kilometers have been opened on the entire Lalin Railway. Photo by He Penglei
As of now, in addition to the 47 tunnels of the whole line of Lalin Railway, 120 bridges have been built, 119 have been completed, and the track laying has been completed for nearly 120 kilometers. There is no railway history. (Finish)