On April 28, after 12 years of hard work, the Dali-Ruili Railway's highest risk tunnel, the Dazhushan Tunnel, was fully opened. According to reports, the appearance of water inrush and mud burst on the tunnel excavation surface is the most worrying situation for the construction personnel. The Dazhushan Tunnel drilled holes in "tofu dregs", and construction workers frequently fought against the sudden flow of grout.
In addition to "water depth", there are "hot". The long-term temperature in the high ground temperature section of the tunnel is about 40 ℃, and the humidity is more than 85%. The construction unit transports ice cubes to the tunnel excavation surface for many years to cool down. Each excavation surface requires 12 tons of ice cubes every day. once. The continuation of the tunnel marks significant progress in the construction of the Darui Railway.
The length of the Darui Railway is about 330 kilometers, starting from Dali City in Yunnan Province to Ruili City on the China-Myanmar border in the west. After it is completed and opened to traffic, it is of great significance to promote the economic and social development of the regions along the route and promote exchanges and cooperation between China and South Asian and Southeast Asian countries. (Reporter Dao Zhinan correspondent Niu Rongjian Chen Jinghao)
Responsible editor: [Luo Pan]