Beko-Abo Multipurpose Project Pre-Feasibility Study Summary
Project Overview
The Beko-Abo Multipurpose Project is a major hydropower initiative in Ethiopia, studied by the Ministry of Water and Energy. The pre-feasibility study was conducted by NORPLAN, NORCONSULT, EDF, and Scott Wilson in association with Shebelle Consult PLC and Trepics Consulting Engineers.
Report Date: November 2010
Report Structure
| Volume | Content |
|---|---|
| Volume 1 | Executive Summary and Sustainability |
| Volume 2 | Project Drawings (Current document) |
| Volume 3 | Supporting Documents (Technical studies) |
| Volume 4 | Environmental and Socio-economic Assessment |
Key Project Components
Main Structures
- Dam and spillway
- Intake structure and gate chamber
- Headrace tunnels
- Powerhouse cavern
- Transformer cavern
- Outlet structure
Technical Specifications
- Maximum operating level: 1050m asl
- Design flood discharge: 18,260 m³/s
- Probable Maximum Flood (PMF) discharge: 19,960 m³/s
- 10-year flood: 2,740 m³/s
Transmission Infrastructure
The project includes plans for extensive transmission lines:
- 400 kV line to Debre Markos
- 500 kV line to Mandaya
- 400 kV line to Mandaya
Detailed route maps are provided for each transmission line option.
Geological Conditions
The site geology consists primarily of:
- Biotite granite gneiss
- Orthogneiss
- Gneiss formations
Site investigations included boreholes (vertical and inclined) and refraction seismic profiles.
Construction Planning
The project includes detailed plans for:
- Internal road networks
- Access roads to the site
- Alternative access routes
- Aggregate plants and storage
- Temporary Bailey bridges
Key Drawing List
Volume 2 contains numerous technical drawings including:
- Reservoir plans and sections
- Dam layouts and cross-sections
- Powerhouse cavern designs
- Switchyard layouts (400kV and 500kV)
- Transmission line route maps
- Geological maps
- Construction schedules
- Road network plans