VARDNILI HPP
BASIC DATA FOR HPP CONSTRUCTION PROJECT (PROVISIONS FOR TECHNICAL ASSISTANCE SERVICES)
VARDNILI HPP - I |
on the ERISTSKALI RIV. |
| CUSTOMER: | Sakmtavarenergo |
| GEN. DESIGNER: | Hydroproject (Tbilisi) |
| GEN. CONTRACTOR: | Sakhydroenergomsheni |
| TECHNICAL ASSISTANCE / SERVICES of GEN. CONTRACTOR: |
Orgenergomsheni |
| PARAMETERS: | |
| Capacity, MW | 220 |
| Power output, GWh | 700 |
| Reservoir storage, mln m3 | 7/145 |
| Rated water discharge, m3/s | 425 |
| Discharge through waterways, m3/s | 710 |
| Rated head, m | 559 |
| TYPE OF REGULATION: | Seasonal |
| SCOPE OF WORKS: | |
| Excavation, ths m3 | 2074 |
| Filling, outlining, drainages and filters, ths m3 | 3342 |
| Contact grouting including joint grouting, ths m2 | 12 |
| Grouting of foundation, including consolidation grouting, ths m2 | 43 |
| Concrete and reinforced concrete, ths m3 | 138 |
| Installation of structural metal elements and mechanisms, ths t | 43 |
| YEAR OF START UP: | 1971 |
| DURATION OF THE CONSTRUCTION OF GENERAL UNITS, month | 60 |
Diagram of VARDNILI HPP-I
1. low level outlet gates shaft;
2. river diversion tunnel;
3. water intake;
4. penstock;
5. spillway;
6. power house;
7. switch yard;
8. rock and earth fill dam.
ROCK AND EARTH FILL DAM of VARDNILI HPP-I
| PARAMETERS: | |
| Height, m | 58 |
| Thickness: | |
| at the crest, m | 10 |
| at the contact with foundation, m | 195 |
| Arch crest length, m | 890 |
| GEOLOGICAL CONDITIONS: | |
| Tertiary semi-rock deposits, dense clay, sandstone, conglomerates | |
| SCOPE OF WORKS: | |
| Excavation, ths m3 | 87 |
| Earth and rock filling, ths m3 | 2191 |
| Including: | |
| Rock dumping, ths m3 | 1191 |
| Conglomerate lining, ths m3 | 810 |
| Drainage and filters, ths m3 | 190 |
| Contact grouting and joint grouting, ths m2 | 12 |
| Grouting of foundation, including consolidation grouting, ths m2 | 43 |
| Concrete and reinforced concrete, ths m3 | 30 |
Dam of VARDNILI HPP-I
1. Rock fill;
2. Filter
3. Armoured concrete stone
4. Loam screen
5. Rock loading.
TRAILRACE CANAL FROM VARDNILI HPP-I TO BLACK SEA
| PARAMETERS: | |
| Lenght, m | 23300 |
| Including: | |
| Lining sections, m | 860 |
| Width at bottom , m | 45/60 |
| Width at top, m | 60/120/150 |
| Depth, m | 6/12 |
| Hillsides | 1:2/1:2.5 |
| Water discharge, m3/s | 710/756 |
| GEOLOGICAL CONDITIONS: | |
| First interval – conglomerates, sandstones and clays; thereafter – alluviums, proluviums and marsh formations | |
| SCOPE OF WORKS: | |
| Excavation, ths m3 | 9322 |
| Filling, ths m3 | 663 |
| Concrete and reinforced concrete lining, ths m3 | 12 |
Trailrace Channel from VARDNILI HPP-I to BLACK SEA
1. VARDNILI HPP I
2. VARDNILI HPP II
3. VARDNILI HPP III
4. VARDNILI HPP IV
5. Tailrace Tunnel Enguri HPP
6. Underground Powerhouse of Enguri HPP;
VARDNILI HPP – II, III, IV On the Trailrace Channel from |
| CUSTOMER: | Sakmtavarenergo |
| GEN. DESIGNER: | Hydroproject (Tbilisi) |
| GEN. CONTRACTOR: | Sakhydroenergomsheni |
| TECHNICAL ASSISTANCE / SERVICES of GEN. CONTRACTOR: |
Orgenergomsheni |
| PARAMETERS: | |
| Capacity, MW | 3x40 120 |
| Power output, GWh | 3x127 400 |
| Rated water discharge, m3/s | 425 |
| Rated head, m | 11 |
| TYPE OF REGULATION: | Seasonal |
| MAIN STRUCTURES: | |
| The 3 Hydropower plants of a similar type are located on the trailrace channel 23300 m long. Each power plant comprises power house on the canal, abutments, piers and 110 kW switchyard. | |
| SCOPE OF WORKS: | |
| Excavation, ths m3 | 1668 |
| Filling, outlining, drainages and filters, ths m3 | 729 |
| Concrete and reinforced concrete, ths m3 | 248 |
| Installation of structural metal elements and mechanisms, ths t | 5 |
| YEAR OF START UP: | 1973-77 |
| DURATION OF THE CONSTRUCTION OF MAIN BUILDINGS | 66 |
Section through the Centre Line of the VARDNILI HPP-II, III, IV Power Unitე
Vardnili HPP Cascade – Technical assistance component services of construction HPP-I, II, III, IV
| № | Buildings | Designation of construction and mounting works | S e r v i c e s | Work execution period, years | ||||
|---|---|---|---|---|---|---|---|---|
| Works organization projects | Works execution projects | Areas construction bases and temporary communications projects | Supervision for implementation of given projects | Consulting of technical and industrial issues | ||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 1 | Rock and Earth-Fill Dam with the loamy screen of the HPP-I | Working out of the Dam foundation ditch | – | + | + | + | + | 1972÷1982 |
| 2 | Rock and Earth-Fill Dam with the loamy screen of the HPP-I | Filling of the rock and loamy screen, with the compression technology | – | + | + | + | + | |
| 3 | Rock and Earth-Fill Dam with the loamy screen of the HPP-I | Arrangement of slope with the armored concrete stone and rock loading | – | + | + | + | + | |
| 4 | Tailrace Channel from HPP-I to Black Sea | Working of the channel | + | + | + | + | + | |
| 5 | Abutments and piers, of the HPP-II, III, IV disposed on the tailrace channel | Construction of the abutments and piers | + | + | + | + | + | |
