Xinhua News Agency, Vientiane, December 18th (Lu Dongmei) The China-Laos Railway Mengsai No. 1 Tunnel, constructed by the China Railway Guangzhou Bureau, opened in the mountainous area of northern Laos 74 days ahead. At this point, following the completion of Nannan No. 2 Tunnel and Tingcun No. 1 Tunnel, the construction of the Guangzhou Railway Bureau ’s pipe section has achieved “three continuities” this month.

The No. 1 Mengsai Tunnel is 3376 meters long with a relative height difference of 192 meters. The terrain is undulating. Affected by high ground temperature, the temperature in the tunnel reaches 37 degrees Celsius for a long time.

以来 Since the start of the China-Laos Railway, breakthroughs have been made in tunnel construction. In December 2017, the China-Old Railway Wangmencun No. 2 Tunnel built by the China Power Construction Hydropower 15th Bureau was successfully completed, becoming a full-line tunnel for the China-Laos Railway Project, and also a modern highway and railway traffic tunnel in Laos history; China Railway Five In October 2018, the bureau passed the Nadui No. 1 tunnel, the first tunnel of China-Laos Railway with a distance of more than one kilometer, and in March 2019, it passed through a long tunnel of more than 5 kilometers.

The China-Laos Railway is a strategic joint project between China ’s “One Belt and One Road” initiative and Laos ’“ change the landlocked country into a land-union country ”. It starts from the Lao-China border port in the north and Vientiane, the Laos capital to the south. 76 tunnels. The railway is built using Chinese management standards and technical standards. The design speed is 160 kilometers per hour and it is an electrified passenger-cargo mixed railway. The project started in December 2016 and is scheduled to be opened to traffic in December 2021.