Somincor – Sociedade Mineira de Neves-Corvo, SA
Geological and Geotechnical Study
Technical Assistance during Construction
Castro Verde, Portugal
The reservoir has the function of storing waste water resulting from the mine’s production process.
The rockfill embankment that encloses the reservoir, with a maximum height of 28m above the foundation, has an extension at the crest of 629m and a volume of 400.000m3. The remaining perimeter of the reservoir is bounded by escavation slopes with 21m height.
All the reservoir is sealed using a double system with an HDPE geomembrane placed over a bentonite geocomposite. The storage volume of the reservoir is of 1.450.000m3.
This reservoir has a 5m wide Creager spillway, an emergency bottom-withdrawal siphon spillway and a rainwater diversion channel, which diverts the generated flows to the reservoir catchment area.