ZHINVALI HPP
BASIC DATA FOR HPP CONSTRUCTION PROJECT (PROVISIONS FOR TECHNICAL ASSISTANCE SERVICES)
ZHINVALI HPP
| CUSTOMER: | Sakmtavarenergo |
| GEN. DESIGNER: | Hydroproject (Tbilisi) |
| GEN. CONTRACTOR: | Sakhydroenergomsheni |
| TECHNICAL ASSISTANCE / SERVICES of GEN. CONTRACTOR: |
Orgenergomsheni |
| PARAMETERS: | |
| Capacity, MW | 130 |
| Power output, GWh | 4855 |
| Reservoir storage, mln m3 | 370/520 |
| Rated water discharge, m3/s | 110 |
| Discharge through waterways, m3/s | 2200 |
| Rated head, m | 128 |
| TYPE OF REGULATION: | Seasonal |
| SCOPE OF WORKS: | |
| Excavation, ths m3 | 6800 |
| Earth and rock filling, outlining, drainages and filters, ths m3 | 6215 |
| Concrete and reinforced concrete, ths m3 | 335 |
| Installation of structural metal elements and mechanisms, ths t | 34 |
| YEAR OF START UP: | 1985 |
| DURATION OF THE CONSTRUCTION, month | 132 |
Layout of Zhinvali HPP
1. earth-fill dam;
2. cementing conduit;
3. powerhouse;
4. outdoor switchyard;
5. turbine penstock;
6. diversion tunnel;
7. surface waste release spillway;
8. side water spillway;
9. bottom spillway;
10. water intake;
11. free-flow diversion tunnel
ROCK AND EARTH FILL DAM of ZHINVALI HPP
| PARAMETERS: | |
| Height, m | 102 |
| Thickness: | |
| at the crest, m | 9 |
| at the contact with foundation, m | 484.75 |
| Crest length, m | 415 |
| Core: of clay loam; Drainages and filters - of graveled rock; Lateral prisms – of boulder | |
| GEOLOGICAL CONDITIONS: | |
| Argillite, marls, marl limestones, embedded separate , rate slabs with bands of sandstones and marls | |
| SCOPE OF WORKS: | |
| Excavation, ths m3 | 5900 |
| Rock and earth filling, ths m3 | 5625 |
| Including: | |
| Drainage and filters, ths m3 | 165 |
| Contact grouting, ths m3 | 3 |
| Consolidation grouting, ths m3 | 11 |
| Curtain grouting, ths m2 | 14 |
| Concrete and reinforced concrete, ths m3 | 34 |
| Installation of structural metal elements and mechanisms, ths t | 9 |
Dam of ZHINVALI HPP
1. reinforced concrete slabs 0.3m thick
2. coarse gravel;
3. loamy core;
4. extruder concrete in a layer 10-15cm;
5. cementing gallery;
6. double-row curtain grouting up to 80m deep;
7. conveyance coment grouting 10-15m deep
UNDERGROUND POWER HOUSE OF ZHINVALI HPP
| PARAMETERS: | |
| Width, m | 15 |
| Length, m | 61 |
| Height, m | 41 |
| Depth of occurrence, m | 110 |
| GEOLOGICAL CONDITIONS: | |
| Lava braccia and tuff braccia | |
| SCOPE OF WORKS: | |
| Rock excavation, ths m3 | 138 |
| Concrete and reinforced concrete lining, ths m3 | 62 |
| Remark: There are considered works, executed on general powerhouse in the scope | |
Cross-section through HPP
FREE FLOW DIVERSION TUNNEL OF ZHINVALI HPP
| PARAMETERS: | |
| Length of tunnel, m | 8600 |
| Through section, m2 | 5x5 |
| Circular section, m | 5 |
| Rated discharge capacity, m3/s | 110 |
| GEOLOGICAL CONDITIONS: | |
| Highly fissured basalt laves and loose volcanic wastes; wet clay soils and conglomerates | |
| SCOPE OF WORKS: | |
| Excavation, ths m3 | 290 |
| Concrete and reinforced concrete lining, ths m3 | 65 |
Zhinvali HPP – Technical assistance component services of construction
| № | 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 | Earth-Fill Dam, with clay loam core | Working out of the Dam foundation ditch | + | – | – | – | – | 1972÷1982 |
| 2 | Earth-Fill Dam, with clay loam core | Filling of the clay loam core and earth, with the compression technology | + | – | – | – | – | |
| 3 | Underground Powerhouse | Working (mining) of the rock and lining | + | + | + | + | + | |
| 4 | Free Flow Diversion tunnel from Powerhouse to buffer basin | Working (mining) of the rock and lining | – | – | + | – | – | |
| 5 | Main water-supply Zhinvali-Tbilisi | Preparation, transportation and mounting reinforced concrete pipes d=3,3m and l=4,5m | + | + | + | + | + | |
