Reconstruction of Hongyan water supply pipeline in Anhua County, Hu’nan Province - China

Project specification

Public contracting authority: Anhua County Water Company

Construction company: Hunan Xingda Construction Group Co. Ltd

Length: 11.5 KM

Application: Reservoir water diversion

DN: 600

This is the reconstruction project for the Hongyan water supply pipeline and use DI pipes to replace the original DN500 PE pipes which has been scrapped.

Project features

• Big difficulty in construction due to the 110 meters height difference from Hongyan reservoir.
• Complex construction environment including overhead line, culvert, inverted siphon, across and along the road, laying along river bed, etc.
• The pipeline that lay along river will be submerged in the river during the flood season.

Outcome

• Use BFS cement lining and 200g/m² Zn coating to resist the corrosion in the complex construction environment.