Rehabilitation of Zhinvali HPP Tunnel in 2017

About Project


Project name: Zhinvali HPP Tailrace Tunnel Rehabilitation
Location: Georgia, Dusheti Municipality
Client: Georgian Water and Power LTD (GWP)
Timeline: May-June 2017
Project features: Zhinvali HPP is located on the river Aragvi in Dusheti Municipality, it is part of Tbilisi water supply system, operated by GWP. The power plant includes the following facilities: Earthfill dam 110m, underground power house with 130 MW capacity, annual production 500 GWH. Design discharge 120 m3/s, head 170m, free flow tailrace tunnel with 8830 m length, 5.2 m diameter.
Main quantities:
• Erosion improvements by MAPEIGROUT        480 m²;
• Reinforcement                                                         2 t;
• Concrete works                                                        15 m3
• Drilling for Grouting                                              400 m;
• Cement mix Grouting                                             5500 L;
• PUR injection                                                           2425 L;
• Treatment of cracks                                                315 m.