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DAMS, HYDROPOWER and UNDERGROUND WORKS

Dams, Hydropower and Underground Works

GIBB’s Dams, Hydropower and Underground Works Sector comprises of highly qualified professionals who offer their services across Africa and beyond, facilitating efficient and cost-effective solutions to complex engineering challenges in the diverse realms of heavy engineering. 

Our reputation is built upon technical excellence combined with total commitment to the highest standards of service, partnering clients through each stage of project development while offering a fully comprehensive service. 

Dams, hydropower and underground works capabilities: 

Dam engineering 
  • Hydraulic analysis and design 
  • Structural analysis and design including: finite element analysis, concrete and steelwork design and architectural input 
  • Hydrological analysis including: hydrological data generation, reservoir flood routing and dam break analysis 
  • Hydraulic equipment design including: spillway gates, control valves, gates, and intake works 
  • Instrumentation and monitoring systems 
  • Rehabilitation and remedial works 
  • Diversion structures 

Hydropower plants and pumped storage schemes 
  • Integrated power planning 
  • Scheme optimisation 
  • Hydraulic analysis and design 
  • Structural analysis and design including: finite element analysis, concrete and steelwork design and architectural input 
  • Hydrological analysis including: hydrological data generation 
  • Hydraulic equipment design including: spillway gates, control valves, gates and intake works 
  • Instrumentation and monitoring systems 

Geology and geotechnics 
  • Geotechnical and geological analysis and modelling 
  • Seismic risk analysis 
  • Slope stability 
  • Test pitting, profiling and soil analysis 
  • Slope stability of surface excavations 

Underground and tunnel engineering 
  • Design facilitated by state of the art geotechnical 2D and 3D numerical analysis including FLAC 3D 
  • Tunnel Boring Machines (TBMs) Expertise 
  • Tunnels, shafts and caverns in hard and soft ground conditions constructed using conventional, Sequential Excavation and Support (NATM), TBM or raise boring techniques 
  • Cut and cover tunnels 
  • Fullproof software modelling and other prediction methods for predicting the performance of Hard Rock TBMs 

Water resources and hydrological studies 
  • Water demand forecasting 
  • Surface run-off hydrological studies 
  • Reservoir yield determinations and yield risk assessments 
  • Modelling of existing and proposed flow diversion schemes and weirs 
  • System yield analyses, system yield risk assessments and determination of optimal operating policies for inter linked inter-basin bulk water supply schemes 
  • Preparation of hydrological data required as input for the compulsory ecological reserve determinations as stipulated by the National Water Act 
  • Hydro-salinity modelling of total dissolved salts concentrations in surface water

Dams, hydropower and underground works related services:
  • Model studies
  • Management and programming of multi-disciplinary projects
  • Water engineering
  • Due diligence and project finance
  • Planning and feasibility studies
  • Environmental services
  • Construction supervision
  • Heavy structural engineering
  • Geographical Information Systems
  • Power transmission
  • Topographic modelling
  • Value engineering
  • Project costing and financial modelling
  • Contract documentation and administration economic and financial evaluation
  • Risk assessment


Head Office: 54 Maxwell Drive, Woodmead 2191, Johannesburg, South AfricaTel: +27 (0)11 519 4600