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Tunnel Groups (Huashuyan Tunnel and Yaogou Tunnel) in Rongcheng-Wuhai Expressway (in Hohehot Municipality), Inner Mongolia Opened to the Public
Project introduction: Huashuyan Tunnel and Yaogou Tunnel in Rongcheng-Wuhai Expressway (in Hohehot Municipality) are featured by low and middle hills with sharp changes in landforms and great difference in height. Elevation is from 1,333m to 1,518m. Vegetation is underdeveloped here. The extremely low temperature in winter reaches -32.1℃.
As a separated tunnel, it is equipped with FL FLOLIC FOAM Freezing-thawing Resistant System for Tunnels in Extremely Cold Areas; FLOLIC FOAM insulating thickness: 50 mm.
