| 1 |
Type of Scheme
|
Run of River Scheme
|
| 2 |
Location
|
| |
Union Territory
|
Jammu & Kashmir
|
|
District
|
Kishtwar
|
|
River
|
Chenab
|
|
Latitude
|
33°21'01'' N
|
|
Longitude
|
75°53'39'' E
|
| Location of Dam |
Near Village Padyarna |
| Location of Power House |
Right Bank of River Chenab Near Village Padyarna |
| Nearest Rail Head |
Udhampur |
| Nearest Airport |
Jammu |
| 3 |
Hydrology |
| |
Catchment area at diversion site |
10325 Sq. Km |
| Design Flood |
10534 cumec |
| GLOF |
2239 cumec |
| Location of Catchment |
|
| Latitude |
32°06'N to 33°39'N |
| Longitude |
75°55' E to 77°48'E |
| Average Annual Rainfall |
838 mm |
| Average Annual Yield |
12949 Mcum |
| Maximum Temperature |
43° C |
| Minimum Temperature |
-0.5° C |
| 4 |
Reservoir |
| |
Full Reservoir Level (FRL) |
EL. 1385.0 m |
| Maximum Water Level |
EL. 1385.0 m |
| Minimum Drawdown Level (MDDL) |
EL.1372.0 m |
| Gross Storage at FRL |
27.167 Mcum |
| Live Storage |
9.16 Mcum |
| Area under submergence at FRL |
0.8 Sq Km |
| Lenght of Reservoir |
6.7 km |
| 5 |
Diversion Tunnel |
| |
No., Diameter & Shape |
EL. 1385.0 m |
| Maximum Water Level |
1 no., 9.5m, Horse Shoe Shape |
| Length |
698m |
| Diversion Discharge |
1041 cumec (1 in 25 years, non-moonsoon) |
| Invert Level at Entry |
EL 1293m |
| Invert Level at Exit |
EL 1285m |
| Diversion Tunnel Gate |
2 Nos. Vertical Lift Gate |
| Size of Opening |
2 Nos. 3.94m x 9.5m |
| Gate of Operating Platform Level |
EL 1292.0 m |
| 6 |
COFFERS DAM |
| |
Type |
Rock fill with central clay core |
| Top of upstream coffer daml |
EL 1315.0 m |
| Top of downstream coffer dam |
EL 1292.0 m |
| 7 |
DAM |
| |
Type |
Concrete Gravity Dam |
| Dam Top |
EL 1387 m |
| FRL |
EL.1385 m |
| Dam Height (above river bed level/ deepest foundation level) |
101m / 109m |
| Maximum Length of Dam at top |
195 m |
| 8 |
SPILLWAY |
| |
Type |
Orifice and Crest type |
| Design Discharge |
10534 m |
| No of Bays (Orifice Type) |
4 Nos. of Orifice Spillway of 9.5m x 17m at EL 1330.0 m |
| No of Bays (Crest Type) |
4 Nos. of Crest Spillway of 9.5m x 13.8m at EL 1368.0 m |
| Spillway Capacity |
Orifice - 3467 x 4 = 13868 cumec
Crest- 1263x1= 1263 cumec
Total= 15131 cumec |
| Width of Orifice spillway block |
64.0 m |
| Width of Crest spillway block |
16.0 m |
| 9 |
Energy Dissipation Arrangement |
| |
Type |
Ski- Jump Bucket with performed plunge pool |
| 10 |
Outlet for Environmental Release |
| |
Design Discharge |
| i) For Lean Period (Dec- Mar.) |
16.49 cumec |
| ii) For Peak flow period (June-sep) |
74.09 cumec |
| iii) Remaining four Months |
16.79 cumec |
| Size of Gate |
2.6m (W)× 2.0m (H) |
| Crest level |
1369.90m |
| 11 |
Construction Sluice |
| |
Nos. & Size of opening |
4 no., 3.1m(W)×5m(H) |
| Crest level |
EL.1300.0m |
| Length |
128m each |
| 12 |
POWER DAM INTAKE |
| |
Number |
4 Nos |
| Design Discharge (Per Intake) |
145.07 cumec |
| Size of Opening |
5.65m x 5.65m |
| Invert Level |
EL 1359.20m |
| C/L of Intake |
EL. 1362.025m |
| Trash Rack Size |
15m x 32.70m |
| 13 |
PRESSURE SHAFTS/ PENSTOCKS |
|
| |
Pressure Shaft No.& Type |
4 no., Underground Circular steel lined |
| Dia. |
5.65m (Internal) |
| Vertical Length |
PS-1=54m, PS-2=67m
PS-3=80m, PS-4=93m |
| Total Length (excluding vertical) |
PS-1 = 182m, PS-2 = 156m
PS-3 = 131m, PS-4 = 108 m |
| Design Discharge (each Penstock) |
145.07 cumec |
| Velocity (Penstock) |
5.78 m/s |
| 14 |
Power House Complex |
| |
Type |
Underground |
| Installed Capacity |
540 MW (4 × 135 MW) |
| Type of Turbine |
Francis Vertical |
| Turbine Centre Line |
EL 1245.55m |
| Power House Cavern |
140m x 23.3m x 50m |
| Control Room Cavern |
40m x 15m x 28.8m |
| Rated Head |
130.1m |
| Design Discharge (per Unit) |
145.07 cumec |
| 15 |
SURGE ARRANGEMENT, TRANSFORMER/ GIS CAVERNS & DRAFT TUBE GATE HALL |
| |
Surge Arrangement |
Combination of indivual (gate) shafts and surge galleries |
| Size |
4 Nos. Shafts of size 5.4m x7.5m and
2 Nos. galleries 10.4m horse-shoe shaped and
length 766m (SG-1) & 776m (SG-2) |
| Draft Tube Gate Opening Size |
7m x 7m |
Transfomer Cavern-
Top Level
Bottom Level
Size
|
EL 1325.00 m
EL 1310.00 m
116.0m x 17m x 16m |
| Size of GIS Cavern |
65m x 15m x 16m |
| 16 |
TAIL RACE TUNNEL |
| |
No.& Type |
2 Nos, concrete Lined |
| Dia. & Shape |
9.5m, Horse-shoe shaped |
| Design Discharge |
580.28 cumec |
| Velocity |
3.87 m/sec |
Length-
TRT-1
TRT-2
Adit to TRT
|
2786m
2963m
536m, Portal at EL 1300.00 m |
| 17 |
OUTLET STRUCTURE |
| |
Number |
2 nos. |
| Invert Level |
EL 1265.00 m |
| Weir crest level |
EL. 1266.50 m |
| Normal TWL (All Units Running) |
EL. 1269.90 m |
| Min. TWL (One Unit Running) |
EL.1267.32 m |
| Max. TWL(At PMF) |
EL. 1291.80 m |
| Deck Level of Structure |
EL. 1293.00 m |
| 18 |
POTHEAD YARD |
| |
Type |
Outdoor |
| Size |
150m x 35m |
| Elevation |
EL 1315.00 m |
| 19 |
Power Generation |
| |
Installed Capacity |
540 MW |
| Annual Energy Generation in 90% dependable year |
4975.54 MU |