Excavation of civil and structural works pertaining to open excavation, tunnel portals, tunneling. rock bolting, shotcreting, grouting. concrete lining. inlet & outlet structure and associated miscellaneous works for the construction of two diversion tunnels, 14 M dia horse shoe type, 900.30 M and 950.40 M in length, of 800 MW Kol Dam Hydroelectric Project.


  • Open excavation : 220.000 cu m
  • Under Ground Excavation : 385.530 cu n
  • Concrete : 145.334 cu m
  • Shotcreting/Lining : 58,671 cu m
  • Reinforcement steel : 2.530 MT
  • Structura I steel : 1.179 MT
  • Rock Bolt (25 & 32 MM dia) : 35g.250 Mls
  • Consolidation Grouting : 4.125 MT
  • Wiremesh : 172.700 Sqm
  • Dewatering : 900.000 Kwh
  • Purpose : Hydro Power Generation (4x200 MW)
  • Client : National Thermal Power Corporation Lld