Why is Mianyang Railway so difficult?

The reason why Mianyang Railway is so difficult is that the northwest of Mianyang is a plateau thousands of meters above sea level.

The northwest of Mianyang is a plateau thousands of meters above sea level. For example, the Yuelongmen Tunnel on the Chengdu-Lanzhou Railway took more than ten years to get through this natural barrier. Therefore, it is difficult to develop in the future, not because of backward development, but because the location is really not very dominant. In addition, this place is extremely expensive in manpower and material resources, so it takes a long time.

The railways that have been built in Mianyang, whether it is baoji-chengdu railway, Xicheng High-speed Railway or Chengdu-Mianle Railway on the intercity line, are basically in the same direction. Therefore, the railway line in Mianyang is relatively simple. Without the participation of railways from other directions, it is naturally difficult for Mianyang to become a railway hub, and its connection with other surrounding cities will naturally be affected.

Terrain and landform of Mianyang

Mianyang City is located in the northwest of Sichuan Basin, in the middle and upper reaches of Fujiang River, bordering Qingchuan County and Jiange County of Guangyuan City in the east and nanbu county County and Xichong County of Nanchong City in the east. It is connected to Shehong City and Daying County in Suining City in the south. It borders Luojiang District, Zhongjiang County and Mianzhu City in Deyang City in the west, and borders Jiuzhaigou County, Songpan County, Maoxian County and Wenxian County in Longnan City, Gansu Province in the northwest.

Mianyang city has developed strata, complex rock structure and great changes in lithology and lithofacies. Multi-period and multi-period structural inheritance and interference superposition, and the structural form is extremely complex. Late magmatism and regional metamorphism are weak, sedimentary mineralization is strong, and endogenous mineralization is weak. The northwest of Mianyang City has high terrain and abundant precipitation, which has become the birthplace of rivers.