Teesta - Ministry of Power

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Dam Top EL.3270 m River bed level at dam site EL.3230m Maximum Dam height (above deepest foundation level) 4 45 m Dam height (above River bed level) 40 m Length at dam top 350 m CONCRETE DAM-II Type Concrete Gravity Dam Top EL. 3270m River bed level at dam site EL.3230m Maximum Dam height (above deepest foundation level) 60 m Dam height (above River bed level) 40 m Length at dam top 240 m SPILLWAY DAM-I Type Orifice Type No. of bays 5 Crest level of spillway EL.3240 m Size of the openings 4m(w) X 6m(H) Design flood (PMF) 1600 m 3 /sec DAM-II Type Orifice Type No. of bays 4 Crest level of spillway EL. 3240m Size of the openings 4.5m(w) X 6m(H) Design flood (PMF) 1300 m 3 /sec Preliminary Feasibility Report Teesta (I) HE Project (4 x 80 MW)
RESERVOIR DAM-I Full Reservoir Level (FRL) EL.3265 m Minimum draw down level (MDDL) EL.3260 m Area under submergence at FRL 43.75 Ha Gross Storage 9.26MCM Live Storage 1.78 MCM DAM-II Full Reservoir Level (FRL) EL. 3265m Minimum draw down level (MDDL) EL.3258m Area under submergence at FRL 19.57 Ha Gross Storage 4.00 MCM Live Storage 1.04 MCM POWER INTAKES (for both the dams) Number Two Invert level EL.3250 m Size of each Gate 4.5 m ×4.5 m Trash Rack 5 Preliminary Feasibility Report Teesta (I) HE Project (4 x 80 MW) Steel Trash Racks with Raking Machine Design discharge +19.05 m 3 /sec in each intake DESILTING CHAMBERS (for both the dams) No., Type & size of desilting chamber 2 Nos., Dufour type chambers each 200 m long, 8 m wide, ht.12m Design Discharge in each chamber +19.05 m 3 /sec Particle size to be removed ≥ 0.2 mm (90% efficiency)
Page 1: 50 000 MW HYDROELECTRIC INITIATIVE
Page 4 and 5: TITLE LIST OF PLATES Preliminary Fe
Page 6 and 7: Preliminary Feasibility Report Tees
Page 8 and 9: 2 Preliminary Feasibility Report Te
Page 12 and 13: SILT FLUSHING TUNNELS (for both the
Page 14 and 15: 1.2 STUDIES/INVESTIGATIONS UNDERTAK
Page 16 and 17: 1.3.5 Environmental Aspects 10 Prel
Page 18 and 19: Preliminary Feasibility Report Tees
Page 20 and 21: 13 Preliminary Feasibility Report T
Page 26 and 27: Table 2.1 POWER SUPPLY POSITION OF
Page 28 and 29: CHAPTER -III PROJECT AREA 20 Prelim
Page 32 and 33: 3.2.6 Natural Resources 24 Prelimin
Page 34 and 35: Rangit Basin 26 Preliminary Feasibi
Page 36 and 37: 10. Rammam Stage-I 70 MW Rammam 11.
Page 38 and 39: 4.1 INTRODUCTION CHAPTER-IV TOPOGRA
Page 40 and 41: Group Lithology 31 Preliminary Feas
Page 46 and 47: Photo-2: A view of Power House Area
Page 48 and 49: 5.1 GENERAL CHAPTER -V HYDROLOGY 38
Page 56 and 57: 9. Sirwani (Power House Site-Teesta
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50 Preliminary Feasibility Report T
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28°0' 27°45' 88°15' PAKI CHU 88
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Year TEESTA BASIN PROJECTS 56 Preli
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TEESTA-I H.E PROJECT AVERAGE 10-DAI
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Discharge (cumec) 55 50 45 40 35 30
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Elevation(m) Area(Ha) Capacity(Ha.m
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CHPAPER-VI CONCEPTUAL PLANNING AND
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6.2.3 Reservoirs 71 Preliminary Fea
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6.2.7.2 Tail Race Tunnel 75 Prelimi
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6.4.1.8 Instrument And Remote Contr
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6.4.2.5 Silt Flushing Tunnel Gates
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Preliminary Feasibility Report Tees
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90% Dependable Year: 84 Preliminary
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Table-7.1 DISCHARGE DATA 86 Prelimi
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PERIOD Table-7.5 92 Preliminary Fea
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INCREMENTAL (DMU/DMW) 2.60 2.40 2.2
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Table-7.7 (B) 96 Preliminary Feasib
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Table-7.7 (D) 98 Preliminary Feasib
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Table-7.7 (F) 100 Preliminary Feasi
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Table-7.7 (H) 102 Preliminary Feasi
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Table-7.7 (J) 104 Preliminary Feasi
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Table-7.7 (L) 106 Preliminary Feasi
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Table-7.7 (N) 108 Preliminary Feasi
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Table-7.7 (P) 110 Preliminary Feasi
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Table-7.7 (R) 112 Preliminary Feasi
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Table-7.7 (T) 114 Preliminary Feasi
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9.2 PHYSICAL ENVIRONMENT 9.2.1 Clim
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120 Preliminary Feasibility Report
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9.6.5 Impacts on Socio-Economic Env
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10.1.3 Power Availability 140 Preli
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11.2.10 Tail Race Tunnel: 149 Preli
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Sl. No. Name of Work Unit Quantiy D
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CHAPTER -XII COST ESTIMATES 152 Pre
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2.13 Consultant’s fees including
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S. N. ABSTRACT OF COST OF C - WORKS
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S. No. COFFER DAMS (FOR BOTH THE DA
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S. No. SPILLWAYS (FOR DAM-I & DAM-I
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S. No. INTAKE STRUCTURES (FOR BOTH
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S. No. ADITS 170 Preliminary Feasib
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S. No. SURGE SHAFT 172 Preliminary
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S. No. POWER HOUSE COMPLEX 174 Prel
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S. No. HYDRO MECHANICAL EQUIPMENT 1
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S. No O-MISCELLANEOUS 182 Prelimina
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S. No. V - RECEIPT & RECOVERIES 190
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13 14 15 16 17 18 Custom Duty @22%
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Year Estimated Cost at June 2003 P.
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CALCULATION OF ENERGY RATE WITH PRE
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TALEM H.E PROJECT R.B.L- EL. 3630 F
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TALEM HYDRO ELECTRIC PROJECT (3 X 2
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27° 47' LOHNAK CHU 3400 U/S COFFER
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H.R.T. 4.0 MØ H.S. SHAPE (FROM DAM
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L10 ? L9 L8 L7 PARAPET L6 ? L5 ? 17
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HRT4000 Ø FROM DAM-I 32Ø 5000 LON
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The rock types encountered in the a
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SEISMOTECTONICS AND SEISMICITY Seis
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interbanded and are expected to pro
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founded on sandy soil is higher tha
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X Some well built wooden structures
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1940 8 2 3 3 59 . 0 28 . 00 90 . 50
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1988 5 10 7 16 16 . 1 25 . 32 90 .
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1997 1 25 20 8 28 . 7 30 . 00 88 .
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2000 10 3 17 8 22 . 4 26 . 88 89 .
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REPLY OF COMMENTS OF CEA (HP & I )
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REPLY ON COMMENTS OF SP&PA DIVISION
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Sikkim is on the higher side as the
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of the project on the fast track ba
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Consistency of data Water availabil
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YEAR/ MONTH I 1976 II III I 1977 II
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