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Hydropower Project
Hydropower Project
Ethiopia
The Gilgel Gibe II Hydropower project is within the Gibe-OMO system and four turbines housed in an above ground power house provide 420MW of power from 500m of head. Water is fed from the Gilgel Gibe River via a sluice gate and transferred via a 26km TBM excavated headrace tunnel. Completion of the headrace tunnel was delayed when the intake portal TBM came to a halt on encountering exceptionally adverse ground conditions and high groundwater pressure.
Geo-Design acted as independent assessors of the event and of the scheme planned to bypass the adverse ground conditions.
Sector: Water – hydroelectric power station.
- Geological and hydrogeological evaluation
Independent evaluation of the large amount of investigation data, inspection of core, evaluation of the rock mass conditions and review of rock mass failure mechanisms. - Collapse mechanism
Providing opinion on the mechanism of ground behaviour. - Root cause analysis
Establishing the engineering and technical cause of the incident. - Review of recovery and restart plan
