The Shuakhevi HPP is a 185 MW hydropower project currently under construction in Adjara, Georgia. The scheme comprises two Powerhouses (175 MW and 10 MW), three dams and weirs and two transfer tunnels (4m and 5.15m span) to transfer water (6.25km, 9.2km), a headrace tunnel (16.6km, 6.22m span) to the main Powerhouse, a 250m high 6.4m diameter vertical Pressure shaft (6.4m DIA), a 800m long high-pressure headrace tunnel and a 500m long, 3.25m DIA steel lined penstock. The tunnels pass through a volcanic series consisting of basalts, andesites, ashes and mudflow sediments and breccias, partially highly impacted by tectonics, slickensides and fault gauges.
Expert Advice and Site Support:
Gall Zeidler Consultants (GZ) is involved in the root cause analyses and rehabilitation of tunnel instabilities along the various tunnels. GZ provides the lead expert for the root cause investigation and the Peer Reviewer for the repair and final support measures. Furthermore, GZ provides the site Tunnel Lead engineer and a site tunnel engineer during the re-construction and repair work.