ENKA`s scope of the Berke Dam project included procurement, construction and erection. The project included the Phase 1 – construction of the diversion tunnel of the Berke Dam on the River Ceyhan as well as the access roads, tunnels & bridges and the Phase 2, construction of dam.
BERKE DAM DIVERSION TUNNEL, ACCESS ROADS, TUNNELS & BRIDGES
Project Description
Unique Challenges
- With the purpose of capitalizing on the 200 m waterfall height, this dam was constructed in a valley, which was exceedingly steep with highly difficult transportation and work conditions.
ENKA Scope of Services
The works included the construction of following items: 500 meters long derivation tunnel with horse-shoe section and 13 meters diameter, 5 kilometres long approach roads required for the dam construction and operation, and constructed by 1.2 million cubic meters of excavation, 7 approach tunnels with a total length of 3.5 kilometres, 2 approach bridges, with 3 span, with a total span of 160 meters and made of steel prefabricated panels, underground power stations, power tunnels, rock-bolt galleries, over-crest platform excavations, spillway tunnels and approach tunnels.
Significant Features and Accomplishments
- The largest Hydroelectric Dam on Ceyhan River.
Key Quantities
Major Quantities of Access Tunnels:
| Tunnel Excavation | 281,257 m³ |
| Road & Other Excavation | 1,500,000 m³ |
| Tunnel Concrete | 42,398 m³ |
| Other Concrete | 14,500 m³ |
| Shotcrete | 16,080 tons |
| Consolidat. grouting | 200 tons |
Major Quantities of Diversion Tunnels:
| Tunnel Excavation | 25,295 m³ |
| Concrete Lining | 39,942 m³ |
| Drilling of Grouting | 141,922 m |
| Drilling for Anchors | 15,000 m |
| Drilling for Piezometer | 15,217 m |
| Cement Grouting | 12,448 tons |
