Chinese|EnglishThe total length of Duofeng railway tunnel is 744 meters long, and the construction capacity of secondary lining concrete is more than 4200 square meters. The tunnel line is designed as a single line with a minimum curve radius of 600m. The slope of this tunnel is from small mileage to 3‰ of large mileage. The tunnel is constructed by single-line lining machine, which is constructed by China Communications Second Public Co., Ltd. (CCCC).
