Technical Information

Body specifications

Dam type	ECRD
Height from foundation	155 m
Foundation width	720 m
Crest length	185 m
Crest width	15 m
Crest Elevation	1765 m
N.W.L	1756 m.a.s.l
Total Concrete Volume	12000 m3
Dam body volume	4,596,000 m3

Dam Embarkment Volume

Item		Quantity (cu.m.)
Core		500,000
filter	2A	150,000
filter	2B	141,000
Rockfill	3A	148,000
	3B	1,412,000
	3C	1,590,000
	3D	655,000
Sum		4,596,000

Water Sealing System Specification

Water Sealing method	Grout Curtain
Length of Grouting GALLERIES(m)	1548.8
Grouting Total Length (m)	106,500
Grouting Curtain depth	92.5

Reservoir specifications

Item	Quantity
Total Reservoir Volume	228 (cu.m.)
Usable Reservoir volume	124 (cu.m.)
Reservoir Surface	4.11 (sq.km.)
Annual Water control Volume	960(Mcm)
Reservoir Width	200 m
Reservoir Length	20 km
N.W.L	1756 m.a.s.l

Diversion system

Location		Left Abutment
No. of Diversion Tunnels		2
Tunnel length/Diversion Calvert		No.1: 563 m & No.2: 720 m
Typical cross section	No. 1	Tunnel: Circle+ Culvert: Trapezoid
	No. 2	Tunnel: Circle
Lining Type		Concrete
Tunnel Excavation Diameter		9.5 m (old & New)
Internal Diameter after lining		8.m (No.1,2) Culvert (Heigh:8m,Width 5.5 m)
Total Open-Cut and Underground Excavations		113, 355 (cu.m.)
Discharge Capacity		No.1: 755 cu m/sec No.2: 712 cu m/sec
Type & Height of Coffer dam		Rock fill by Soil Cement Face 35 m
Concrete Volume in DiversionTunnel (Backfill Concrete & Structural Concrete)		1756 m.a.s.l

Instrumentation

Instrument Supplier Company: SADAFZAR Co. Representative of SisGeo Italy
Micro geodesy Network: 24 Station (Surface Displacement Point)

Number & Description of Instruments:
Electrical Piezometer: 70
Inclinometer and Settlement Meter: 5
Piezometer (Casa Grande): 9
Pressure Cell: 28
Accelograph: 6
Hydrostatic Settlement: 53
Extensometer: 26

Spillway

Type of spillway	Tunnels , 2 branches
Location	Left Abutment
Maximum Reservoir Elevation in Flood	1764.14 m.a.s.l
Flood Discharge Capacity	3445.71 (cu.m.)
Total Spillway Length	631m (2 Tunnels)
N.W.L	1756 m.a.s.l
Spillway Design Discharge	3342 cu.m./sec
Type and Energy Dissipation Systems	Flip bucket With 30m Radius and 36.34.m Length

Quarries and their specification

1- Dam Body Mixed Core Sources (GC):

- Chaleh Hatam Borrow Area (B, C, D) Fine aggregate:

Borrow Area	Gravel Content (%)	Sand Content (%)	Silt Content (%)	Clay Content (%)	LL (%)	PI (%)	CL	CH	SC	GC,GC-GM	ML	MH	SM,SC-SM
B	6	15	48	31	47	25	31	33	4	3	-	2	7
C	5	11	53	31	44	23	43	15	1	-	2	-	-
D	11	24	37	28	41	20	5	2	1	1	-	-	-

- Rock fill Borrow Area AX1,AX2: (Crushing Plant Output, Course Borrow Area)

2- Filter Sources:

- Rock fill AX1 , AX2 (Course Borrow Area , Crushing Plant Output)

- ALG Borrow Area, River Sand
3- Shell and Transition Sources:
- Quarry AX1,AX2

Borrow Material Specification:
      - Apparent unit Weight: 2.70 gr/ cm3
      - Specific unit Weight: 2.71 gr/cm3
      - Porosity: 0.96%
      - Water absorption: 0.36%
      - Dry Compressive Strength: 73.9 MPa
      - Saturated Compressive Strength: 54.4 MPa
      - Compressive Weight loss : 21 %
      - Soundness Weight loss : 1.05%
      - Loss Angeles Abrasion: 35%

General specifications of powerhouse

Type	Surface
Capacity	450 MW (2 Units)
Annual energy generation	986 GWH
Type of turbine	Francis-Vertical Shaft
Location	Lorestan Province,100 Km South of Aligoodarz
Critical Minimum Water Operation Level	1721 m.a.s.l
Normal Water Operation Level	1756 m.a.s.l
Maximum Water Operation Level	1764.14 m.a.s.l

Specifications of powerhouse equipments

Number of turbines	2 units	Generator Rated Output	225 MW
Turbine Rated Outed Output	230 MW	Rayedl Voltage of Generator	15.75 KW
Maximum Output	95.12%	Generator Speed	300 RPM
Turbine Design Head	431 m	Rated Current of Generator	9300 A
Turbine Turbine Manufacturer	Alstom (China)	Generator Manufacturer	Alstom
Number and Type of Generators	2 Units- 3 Phase Synchronous generator With Vertical Shaft

Specifications of powerhouse building

1- General Speciation of Powerhouse

Powerhouse Length	Powerhouse Width	Powerhouse Height from Foundation
100.5 m	42 m	56 m

2- Powerhouse (PowerStation)

Total Concrete Volume (cu.m)	Total Excavation Volume (cu.m)
80000	720000

3-Powerhouse Tailrace

Tailrace length	Tailrace Culvert Height
50 m	4.45 m

Specifications of powerhouse outlet tunnels

In this regard no data exists.

Specifications of powerhouse waterways

In this regard no data exists.

Technical specifications of post and switchyard

Switchyard & Transmission Line Specification
Switchyard Voltage	400 KV
Busbar arrangement	1.5 CB arrangement
Number of Bay	4
No. of Outlets	2
Switchyard Area	225m x 225m

Specifications of tunnels

Intake Tunnel Length	1270	Length of each Penstock	North Long: 776 m South Long: 763 m North Short: 159 m South Short: 145 m
Headrace Tunnel Diameter	6 m	Diameter. of Penstock	4.4~3.8
		Number of Surge Tanks	2
Type of lining	Reinforced Concrete	Type of Surge Tanks	open
Number of inlet Penstocks	2 lines	Height of Surge Tanks	N: 122 m S: 121 m
Number of outlet Penstocks	2 lines	Diameter of Surge Tanks	6.2 m
Length of each Penstock	2300 m

Intake structures

Item	Quantity	Item	Quantity
Number of openings	1	Type of Opening	1 Bell mouth
Maximum design flow	115.7 m3/s	Type of Inlet Gates	Slide & roller
Design Head	48 m	Width of Gates	4.8 ئ
Number of Gate	2	Height of Gates	6 m
Number of trash racks	3	Width of Trash racks	5.3 m
		Height of Trash racks	13.7 m

Outlet structures

In this regard no data exists.

Access roads and bridges

1- Access Roads Specifications

Item

Length(km)

Average Width (m)

Renovation road from Horr-Abad to Gardaneh-Namak(2nd grade asphalt road) 20 7

Access road from Gardaneh-Namak to powerhouse(B2) Approximately 22 km 7

2- Technical specifications of the bridges

Bridge Title	Width (m)	Length(m)
Smooth Bridge	8.5	20

3- Technical specifications of access tunnels

Item	Length (m)
access tunel to dam crest (T1)	1554
access tunnel to dam heel (T2)	1540
access tunnel (T3)	203
access tunnel (T4)	413
access tunnel (T5)	330
access tunnel (T6)	237

Complementary operations

1- Permanent buildings:

Due to long distance between The Job-Site and the nearest City (Aligudarz City), for accommodating the Personnel of Employer, Consultant and moreover for having the working offices, the following permanent structures have been constructed.

Item	Description	Area
1	Guest Houses and Catering Areas	5500 m2
2	Office Buildings and Assembly Hall	2200 m2
3	Gym	800 m2
4	Buildings such as Warehouse, Gas Station, Clinic, Bascule	1500 m2(approx)
5	Landscaping and Covered Parking Area	10 acres (approx)

2- Infrastructure facilities:

For infrastructure facilities the following main activities have been implemented:

- Diesel power plant with the capacity of 5 Mega Watt
- Water supply network (potable and industrial water) including 5 underground and aerial water storages and approx 20 kilometers of water supply network
-Satellite data transmission facilities for exchanging of information/telecommucation between IWPC Head Office and Site
- Other facilities such as gas station and weight-bridge

Rudbar Lorestan Project