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Geological and civil engineering aspects of hydroelectric developments in the Scottish Highlands
Abstract Since 1945 the North of Scotland Hydro-Electric Board have carried through an extensive programme of civil engineering works in developing for public electricity supply the water resources of the Scottish Highlands. In these 20 years the Board have installed about 1,000 MW of conventional hydro-electric capacity in 50 power stations and 400 MW of pumped-storage plant. The main civil engineering works have been concerned with the construction of more than 50 major dams and the excavation of underground installations in hard rock including the driving of over 200 miles of tunnels. The geological setting of the schemes is briefly described and reference is made to the geomorphological development which has given rise to the present land forms. It is then shown how the geology is generally favourable for hydro-electric schemes providing watertight basins for reservoirs, safe though not always easy dam sites, and stable rock for underground excavation. The forms of development adopted and the general considerations governing the choice of type of dam are then described and the reasons for not always accepting what appeared to be the obvious solution for the prevailing site conditions are explained. The more important individual details of Scottish dam design, the construction of underground workings and the methods of rock excavation and lining used are reviewed. Finally, a brief description is given of the largest single project undertaken by the Board, viz., the 400 MW Cruachan pumped-storage installation.
Geological and civil engineering aspects of hydroelectric developments in the Scottish Highlands
Abstract Since 1945 the North of Scotland Hydro-Electric Board have carried through an extensive programme of civil engineering works in developing for public electricity supply the water resources of the Scottish Highlands. In these 20 years the Board have installed about 1,000 MW of conventional hydro-electric capacity in 50 power stations and 400 MW of pumped-storage plant. The main civil engineering works have been concerned with the construction of more than 50 major dams and the excavation of underground installations in hard rock including the driving of over 200 miles of tunnels. The geological setting of the schemes is briefly described and reference is made to the geomorphological development which has given rise to the present land forms. It is then shown how the geology is generally favourable for hydro-electric schemes providing watertight basins for reservoirs, safe though not always easy dam sites, and stable rock for underground excavation. The forms of development adopted and the general considerations governing the choice of type of dam are then described and the reasons for not always accepting what appeared to be the obvious solution for the prevailing site conditions are explained. The more important individual details of Scottish dam design, the construction of underground workings and the methods of rock excavation and lining used are reviewed. Finally, a brief description is given of the largest single project undertaken by the Board, viz., the 400 MW Cruachan pumped-storage installation.
Geological and civil engineering aspects of hydroelectric developments in the Scottish Highlands
Johnstone, G.S. (author) / Crichton, J.R. (author)
Engineering Geology ; 1 ; 311-342
1966-03-28
32 pages
Article (Journal)
Electronic Resource
English
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