Salient Features of KBD Project
| 1 | The Main Reservoir of the Dam | |
| Total Storage | 7.9 MAF (9,750 million cu m) | |
| Usable Storage
Dead Storage |
6.1 MAF (7,550 million cu m)
1.8 MAF( 2,200 million cu m) |
|
| Retention Level | El.915-ft above MSL (278.9 m) | |
| Min Reservoir Level | El.825-ft above MSL (251.5 m) | |
| Area at Retention Level | 105,000 acres ; (164 sq.m=425 sq. km) | |
| 3 | Main Dam | |
| Crest Elevation
Crest Width |
El. 940-ft above MSL (286.5 m)
50 ft (15.2 m) |
|
| Max Height | 260 ft (79.2) | |
| Length
Length (overall) |
4375 ft
11000 ft 3350 m) |
|
| 4 | Catchment Area of the Dam | 110,500 sq. miles |
| 5 | Fill Volume
Main + Closure Embankments Intake Embankments Right Auxiliary Embankments Guide Bunds, Cofferdams etc
|
5.9 million cu m
10.5 million cu m |
| 6. | Overflow Spillway | |
| Sill Level | El. 860-ft above MSL (262.1 m) | |
| No and size of radial gates
PMF Discharge |
10 No. 50ft (15.2 m ) w x 55 ft (16.8m )
0.98 million cusecs (1.07 million cusecs) |
|
| 7. | Project Cost | |
| Based on Cost at June 1987 | US $ 2.65 billion | |
| Present Estimated Cost | US $ 8-10 billion | |
| 8. | Orifice Spillway | |
| Sill level
No and size of radial gates |
785 ft (239.3m) SPD
10 No. 38 ft (11.6 m) w x 22 ft
|
|
| 9.
10. |
Convertible conduits
No & Size of Conduits Average Length Lining
No & Size of gates Upstream bulkhead Upstream radial Downstream radial
|
4-36 ft (11 m) diameter 940 ft (286.5 m) Steel with concrete encasement
1-36 ft (11 m) w x 36 ft (11m) 4-36 ft (11 m) w x 36 ft (11m) 2-35 ft (10.7m) w x 36 ft (11m)
|
| 11. | Power Facilities
No and size of intake gates Upstream bulkhead Upstream radial
|
2-36 ft (11m) w x 36 ft (11m) 8-36 ft (11m) w x 36 ft (11m) |
| 12. | Penstocks
Size and average length Lining |
36 ft (11m) diameter, 850 ft Steel with concrete encasement
|
| 13 | Power Station
Type No. of Units Installed Capacity Turbines, design head Generators, nominal/maximum rating
|
Indoor 8 (initial); 12 (ultimate) 2400 MW (initial); 3600 MW (ultimate) Francis Type, 170 ft (51.8m) |
|
13.1 |
Irrigation Benefits
Increase in future annual irrigation supplies (Average)
|
4.5 MAF (5.500 million Cum) |
|
13.2
13.3 |
Energy generation
At KBD Extra at Tarbela Total
Power Available (initial eight units) Max Power Dependable Power |
11413 million kWh 236 million kWh 11749 kWh
2776 MW 1463 MW |
References: