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Maccheronis (Italy)

Gravity dam upgrade

Place:

Maccheronis - Italy

Customer:

Lombardi s.a. (Beneficiary: Consorzio Bonifica della Sardegna Centrale)

Year:

2003 - 2005

Project Description:

Reservoir capacity augmentation through the heightening of an existing concrete gravity dam and through a new spillway on the left abutment

Main Features:
  • Reservoir (A = 615 km², V_existent tot = 25 Mm³, V_final tot = 35 Mm³)
  • Dam (H_existent = 46 m, H_final = 47 m, L_final = 435 m, V_cls final = 96'000 m³)
  • Spillway existent (L = 198 m, Q_max = 2'643 m³/s)
  • Spillway final on the left abutment (L = 210 m, Q_max = 3'000 m³/s, No. 3 Sector Gates HxW = 12x3 m, N°3 Flap Gates HxW = 12x0.5 m)
  • Outlet Tunnel (L = 199 m, D = 3.5 m, Q_max = 65 m³/s, No. 2 Gates HxW = 1.60x2.00 m)
  • Inlet Tunnel (L = 432 m, D = 2 m)
Engineering Service:
  • Preliminary Design
  • Final design ( not including the new spillway on the left abutment )