Synchronized Start-up Construction of Sichuan and Chongqing Sections of Chongqing-Kunming High-speed Railway

On the morning of September 29th, the Sichuan and Chongqing sections of the Chongqing Kunming high-speed railway were announced to start construction at the same time. The Chongqing-Kunming high-speed railway is an important part of the national long-term railway network "eight vertical and eight horizontal" high-speed rail network, and is also a key project of the national "100 traffic poverty alleviation projects".

, Chongqing Iron and Steel Railway Design Institute, the responsible person of China Railway 2nd hospital, introduces the new high-speed railway from Chongqing to Kunming, that is, Chongqing Kunming high speed railway, which is drawn from the city, through the market area, the area, the province, the city, the market, the province, the market, the market, and the market. The project is constructed according to the standard of double-track, 350 kilometers per hour and high-speed railway. The main line is 699 kilometers long and 20 stations are set up. The construction period is expected to be 6 years. 393 new bridges and 84 tunnels were built, with a bridge-to-tunnel ratio of 83.6%.

The Chongqing Kunming high-speed railway has three characteristics: first, the topography of the line is undulating, and the three geomorphic units, namely, the basin, the plateau slope and the Yunnan Guizhou Plateau, rise from 200 meters to 2000 meters; second, the geological conditions of the area pass through are complex; third, there are more natural reserves and scenic spots along the line.

To this end, through the integration of space, space and earth means of "satellite remote sensing + UAV aerial photography + geophysical prospecting", the Second Hospital of China Railway has tried its best to identify geological conditions, circumvent environmentally sensitive areas and unfavorable geological areas, and design karst areas according to "elevation, river-side, fast passage", so that high-speed rail can smoothly cross mountain areas.

The project is of great significance to further promote the development of the Yangtze River economic belt, speed up the construction of the Beijing Kunming high-speed railway, and strengthen the connection between Chengdu Chongqing city group and the central Yunnan Urban Agglomeration.