Good news: great progress has been made in the construction of China Myanmar international channel!
On May 22, 2019, after nearly three years of arduous struggle, the first tunnel above 3000 meters, mojiaying tunnel, of China Myanmar international channel Dalin (Cang) railway, was successfully connected, marking significant progress in the construction of the whole line.
Mojiaying tunnel is located in Weishan County, Dali Bai Autonomous Prefecture, with a total length of 3667m. It is a single track tunnel. The construction started in June 2016. The whole tunnel is V-Class surrounding rock with a maximum excavation width of 20.3m and a maximum excavation section of 234.4m2. The entrance and exit of the tunnel is soft rock, which belongs to the "red bed" geology in western Yunnan. When encountering water, it will soften into mud shape, and the tunnel body will sink and deform easily; the rock mass will be broken, and the block will fall easily, so the construction here is like passing through the "Thousand Layer crisp".
In view of the complex geology of "thousand layers crisp", the construction headquarters of Yunnan West Railway of Kunming Bureau Group Co., Ltd. organized the construction unit to continuously explore and adjust the technology, meticulously organized the site management, adopted the bench excavation method, strictly implemented the system of "first detection, pipe exceeding the front, short footage, weak disturbance, strong support, fast closure and frequent measurement". The construction safety, engineering quality and environmental protection have been achieved Effective guarantee.
Tai Lin Railway
Dalin railway is an important channel of "eight out of the province and five out of the country" railway network in Yunnan Province. After the completion of the line, it is of great significance to improve the comprehensive transportation system in central and Western Yunnan, serve the high-quality development of local economy and society, and actively promote the infrastructure interconnection between Yunnan and neighboring countries.