KHUDONI HPP

BASIC DATA FOR HPP CONSTRUCTION PROJECT (PROVISIONS FOR TECHNICAL ASSISTANCE SERVICES)

KHUDONI HPP

On the ENGURI RIV.

(Preserved Construction)

CUSTOMER: Sakmtavarenergo
GEN. DESIGNER: Hydroproject (Tbilisi)
GEN. CONTRACTOR: Sakhydroenergomsheni
TECHNICAL ASSISTANCE / SERVICES
of GEN. CONTRACTOR:
Orgenergomsheni

PARAMETERS:
Capacity, MW 640
Power output, GWh 1455
Reservoir storage, mln m3 89/230
Rated water discharge, m3/s 490
Discharge through waterways, m3/s 1924
Rated head, m 124
TYPE OF REGULATION: Seasonal
SCOPE OF WORKS:
Excavation, ths m3 3699
Earth and rock filling, outlining, drainages and filters, ths m3 200
Contact grouting including joint grouting, ths m2 200
Consolidation grouting, ths m3 350
Concrete and reinforced concrete, ths m3 2386
Installation of structural metal elements and mechanisms, ths t 8
Remark: Construction was closed down in 1989; executed works amount to approximately 25% of the total project cost.

Diagram of the Khudoni Hydraulic Scheme Structures:
1. arch dam;
2. low level water outlets;
3. overflow spillway;
4. stilling basin;
5. river diversion tunnel;
6. water intake;
7. emergency repair gates chamber;
8. penstocks;
9. powerhouse;
10.powerhouse access tunnel;
11.tailrace tunnels;
12. busbar tunnel;
13. 500kV insulated switchgear;
14. motor road tunnel


UNDERGROUND POWER HOUSE OF KHUDONI HPP

PARAMETERS:
Width, m 24
Length, m 95
Height, m 60
Depth of occurrence, m 85
GEOLOGICAL CONDITIONS:
Tuff sandstones, porphyrites, lava braccia and tuff braccia
SCOPE OF WORKS:
Rock excavation, ths m3 270
Concrete and reinforced concrete lining, ths m3 21
Remark: The whole Powerhouse Complex – 3 line supply tunnel 293 m long and 6 m diameter, gate chamber dimensions 13x110x29m, 3 line inclined penstocks 160 m long and 5 m diameter, underground powerhouse and 3 line trailrace tunnel 90 m long and 8 m diameter are considered in the scope of work.


Section through the KHUDONI HPP Powerhouse Complex
1. water intake;
2. trash rack;
3. bulkhead gate;
4. emergency-repair gate chamber;
5. penstock;
6. powerhouse;
7. surge chamber;
8. tailrace pressure tunnel.

Khudoni 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 Three line pressure tunnels d=6m, l=293m Working (mining) of the rock and lining + + + + + 1984÷1989
2 Gates chamber – 13x110x29 m Working (mining) of the rock and lining + + + + +
3 Three line inclined penstocks d=5m, l=160m Working (mining) of the rock and lining + + + + +
4 Powerhouse 24x95x60m Working (mining) of the rock and lining + + + + +
5 Three line tailrace tunnels d=8m, l=90m Working (mining) of the rock and lining + + + + +

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