Artvin - Deriner Dam and HEPP

General Information

Deriner Dam and Hydroelectric Power Plant is located at Artvin province on Çoruh River and the type is double curvature concrete arch dam.

The height of the dam is 253 meters and with this height, the dam is the highest in Turkey and third highest in the world.

The scope of Deriner Dam and HEPP construction includes 40.000.000 m3 of rock excavation, 3.500.000 m3 of dam body concrete, diversion tunnel, underground powerhouse, overflow spillways, access roads and internal roads.

OWNER	State Hydraulic Works (DSİ) - TURKEY
CONTRACTOR	Deriner Consortium - Under the leadership of ERG
PLACE	On çoruh river near Artvin province
PURPOSE	Energy (670 MW, 2.117,75 GWh / year)
CHARACTERISTICS
Type	Double curvature concrete
Crest Elevation	397 m
Height
from thalweg	202 m
from foundation	253 m
Crest Width	12,00 – 18,00 m
Foundation width	55,00 m
Body concrete	3.500.000 m3
Diversion tunnel	898,14 m
Diversion capacity	1.804 m3/s
Spillway type	Overflow 2 ea.
	Orifice 8 ea.
Overflow spillway capacity	2.250 m3/s
Orifice spillway capacity	7.000 m3/s
Maximum water elevation	395 m
Total reservoir volume	1.969 x 10⁶ m3

Powerhouse	Right bank
Type	Underground
Number of units	4
Installed capacity	4 x 167,5 MW (670 MW)
Total energy	2.117,75 GWh

Site Facilities

According to the scope of the project, the temporary and permanent facilities, workshops, infrastructural facilities, water supply, wastewater and treatment facilities have been constructed.

The facilities have been constructed in 5 different elevation because of the steep slope. The machinery and steel workshops, engine workshop, warehouse, restaurant, crushing-screening plant, concrete plant and the office buildings necessary for DSİ and other consortium members have been located at ERG-1 site at elevation 200 m. The residential buildings for the workers have been located at ERG-2 and the lodgings for engineers and managers, technical office, guest-house, conference hall and local headquarters have been located at ERG-3 and TSE sites. At elevation 650 m, the facilities of DSİ Artvin Regional Directorate have been constructed.

Plant, Machinery, Equipment List

PLANT
Steel and Formwork Workshop	10.000 m2
Machine Workshop	30.000 m2
Crushing and Screening Plant	5 ea.
Concrete Plant	5 ea.
Cable Crane	3 x 30 ton

MACHINERY
Bulldozer	20 ea.
Loader	15 ea.
Excavator	20 ea.
Grader	7 ea.
Roller	5 ea.
Truck-mixer	20 ea.
Concrete Pump	9 ea.
Concrete Truck	4 x 30 ton
Drilling Machinery	15 ea.
Truck	50 ea.
Rock Truck	10 ea.
Trailer	7 ea.
Fuel Tanker	8 ea.
Mobile Crane	14 ea.
Truck Mounted Crane	10 ea.
Pick-up	25 ea.
Pickup Truck	25 ea.
Tractor	10 ea.
Bus	10 ea.
Minibus	5 ea.
Jeep	10 ea.
Car	20 ea.
Cement Trailer	30 ea.
Injection Machines	15 ea.
Various Machinery	16 ea.

EQUIPMENT
Concrete Mixer	3 ea.
Generator	22 ea.
Transformer	25 ea.
Water and Injection Pump	80 ea.
Workshop Equipment	30 ea.
Welding Machines	60 ea.
Steel Cut Bend Machines	8 ea.
Concrete Vibrators	35 ea.
Compressors	15 ea.
Electric Compressor	25 ea.
Formwork Systems	10.000 m2

Applications

DAM EXCAVATION:
The dam body excavation of both right and left bank is totally 13.000.000 m3.

DAM BODY
The concreting period of 3.500.000 m3 dam body concrete is 1.000 working days. The capacity of each bucket of 3 separate cable cranes used in dam body concreting is 30 tons.

DIVERSION:
The diversion of Çoruh River have been completed after the construction of diversion tunnel of 937 m long (incl. inlet and outlet structures) and 11,60 m inner diameter.

ANCHORAGE

RIVER DREDGING

ROADS:
A by-pass road of 23,5 km has been constructed in order to carry the traffic of existing roads passing through the site area. The length of site internal roads is 37 km.

UNDERGROUND POWERHOUSE:
The dimensions of underground powerhouse is 45 m x 120 m x 20 m and the dimensions of valve chamber is 30 m x 90 m x 10 m.

ELECTROMECHANICS:
The total weight of electromechanical equipment such as turbine, generator, spiral casing, draft-tube, etc. is 8.500 tons.

COFFERDAMS

TUNNELS

POWERHOUSE

Concrete Production Stages

CRUSHING, SCREENING and WASHING PLANT 1000 ton/h
1 BTI hydraulic breaker
2 Vibrating grizzly (48" x 20“)
2 Jaw crusher
1 Triple deck Specmaker screen (6' x 20')
3 Triple deck Vibro/King screen (6' x 20')
3 Gyrasphere crushers
3 Triple deck Specmaker screen (8' x 20')
3 Pioneer vertical shaft impactor
2 Sand sort classifying tank (10' x 40')
1 Single spiral sand prep (44" x 32")
3 Twin spiral sand prep (44" x 32")
7 Vibrating pan feeders (36" x 72")
3 Magnetic belts
64 Conveyors (2.400 m)
PLC control system

AGGREGATE STORAGE 10.417 m3
5 Underground aggregate silos
10 Vibratory feeders
Transport conveyors
PLC control system

ICE & CHILLED WATER PLANT
Flake ice plant 210 ton/day
Flake ice storage (240 ton)
Aggregate pre/cooling plant by air
2 Chilled water plant for ice makers
& batch water
Water heating system for winter
PLC control system

CONCRETE BATCHING PLANT 360 m3/h
4 Tilting mixers (4 x 4,5 m3)
1 Aggregate silo, 5 bins (1.000 m3)
2 Cement silo (2 x 75 m3)
2 Cement screw conveyor per silo
5 Aggregate batchers
1 Cement batcher
1 Water tank (10 ton)
1 Water batcher
1 Flake ice day tank (1.800 kg)
1 Ice batcher
2 Admixtures tank (800 lt)
2 Admixtures batcher
2 Moisture measuring device
1 Concrete sampling system
Moisture compensation system for aggregates
PLC control system

CEMENT STORAGE 4 x 2.300 ton
Diameter 12,4 m
Height 27,4 m
Total weight 520 ton
Pneumatic transport system 150 ton/h
PLC controlled transport system

CABLE CRANE
Dam body is concreted using 3 cable cranes each having 30 ton capacity and 900 m span. Each machine has an installed capacity of 20 MW and the total necessary energy is 6.000 kW. The volume of buckets used are 4 m3, 6 m3 and usually 9 m3. The total body concrete of 3.500.000 m3 is poured with a capacity of 360 m3/hr.

Photo Gallery