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Ambarau

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Ambarau under construction
Ambarau under construction

Particulars

Owner: Rangold Resources

Designer: ARQ

Contractor: M&T via DRA Mining

Statistics

Type: Hardfill

Purpose(s): Hydropower

Reservoir capacity: 6 m3x106

Height: 21 metres

Length: 255 metres

Volume of RCC: 33 m3x103

Total volume: 40 m3x103

Construction Dates

Start of Project: 11/14 (November 2014)

Start of RCC: 05/15 (May 2015)

End of RCC: /16 ( 2016)

End of Project: /17 ( 2017)

Country: DR Congo

River: Kibali

DMS Co-ordinates: 03˚05'05"N, 29˚34'57"E

DD Co-ordinates: 3.084722, 29.582500

Facings

Upstream

SlopeType
0.75RCC against formwork with external geomembrane (GEVR/GE-RCC)  [stepped face]

Downstream

SlopeType
0.75Traditional concrete against formwork

Spillway

SlopeType
0.75Traditional concrete against formwork

Placement

Layers (mm)Lifts (mm)
300300

Cementitious material

Cement (kg/m3)
100
Pozzolan (kg/m3)Pozzolan Type
0No pozzolan used  -