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Engineering-geological conditions in the region of the Capanda hydro development
Conclusions The engineering-geological conditions of the Capanda hydro development are determined by a set of natural characteristics of the region, the most important of which are the geological structure, geomorphological characteristics, hydrogeological conditions, and the composition and properties of the rocks. The hydro development is located within one tectonically monolithic block with a subhorizontal occurrence of the rocks without large tectonic disturbances. The rocks are represented by arkosic sandstones and conglomerates, monolithic, very strong and very dense, fractured to various degrees. The geomorphological characteristics of the region consist in the presence of a canyon-shaped valley in the stretch of the dam site and primarily U-shaped valley in the reservoir zone. The hydrogeological conditions are determined by the presence of fissure-type subsurface waters with infiltration recharge and discharge into the river valley. The waters are slightly mineralized (up to 0.3 g/liter) and are not corrosive with respect to concrete. The rocks composing the foundation of the hydraulic structures and bed for the reservoir have high indices of physical and mechanical properties and low permeability. Construction of the hydro development can be provided with local building materials in the necessary quantities. On the whole, the engineering-geological conditions of construction of the Capanda hydro development can be considered favorable.
Engineering-geological conditions in the region of the Capanda hydro development
Conclusions The engineering-geological conditions of the Capanda hydro development are determined by a set of natural characteristics of the region, the most important of which are the geological structure, geomorphological characteristics, hydrogeological conditions, and the composition and properties of the rocks. The hydro development is located within one tectonically monolithic block with a subhorizontal occurrence of the rocks without large tectonic disturbances. The rocks are represented by arkosic sandstones and conglomerates, monolithic, very strong and very dense, fractured to various degrees. The geomorphological characteristics of the region consist in the presence of a canyon-shaped valley in the stretch of the dam site and primarily U-shaped valley in the reservoir zone. The hydrogeological conditions are determined by the presence of fissure-type subsurface waters with infiltration recharge and discharge into the river valley. The waters are slightly mineralized (up to 0.3 g/liter) and are not corrosive with respect to concrete. The rocks composing the foundation of the hydraulic structures and bed for the reservoir have high indices of physical and mechanical properties and low permeability. Construction of the hydro development can be provided with local building materials in the necessary quantities. On the whole, the engineering-geological conditions of construction of the Capanda hydro development can be considered favorable.
Engineering-geological conditions in the region of the Capanda hydro development
Karyakin, I. F. (author)
Hydrotechnical Construction ; 24 ; 543-548
1990-08-01
6 pages
Article (Journal)
Electronic Resource
English
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