LANDSLIDE RISK ASSESSMENT FOR THE BUMBUNA DAM RESERVOIR - SIERRA LEONE

CLIENT: STUDIO PIETRANGELI

CONTRACTOR: SALINI COSTRUTTORI

OWNER: ENEL GREEN POWER

COUNTRY: SIERRA LEONE

YEAR: 2008-2009

PROJECT DESCRIPTION: 50MW Hydroelectric power plant along the Seli River in Sierra Leone. Major feature is a rockfill dam with bitouminous asphalt face 87m high and 400m long. Reservoir length 30km for a total volume of 410Mmc

GEOLOGICAL SETTING: Precambrian basement in contact with a greenstone belt. Main lithologies: gneiss and amphibolite.

• Level 2 Design

  Desk study

  Satellite data acquistion and interpretion

  Interpherometric analysis of satellite radar data for ground movement detection

  Identification of existing landslides

  Geological and geomorphological field survey

  Lanslide hazard and risk analysis with multicriteria approach

  Landslide hazard and risk zonation

  Impact wave amplitude assessment

  Slope stability monitoring plan

  Published Paper: Battaglia D., Strozzi T., Bezzi A.: Landslide hazard - risk zonation and impact wave analysis at the Bumbuna reservoir – Sierra Leone; IAEG XII Congress 2014

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