Surface subsidence in southern Africa
By: F. von M. Wagener, J.N. van der Merwe, G.B. Matthews
Contributors: van der Merwe, J. N.; Mattews, G. B.; International Conference on Soil Mechanics and Foundation Engineering (12th : 1989 : Rio de Janiero, Brazil)
Publisher: s.n
Published: 1989
Place of publication: S.l
Language: eng
Number of pages: 1831
Description:   The two causes of surface subsidence in southern Africa, subsidence due to erosion and subsidence due to mining, were discussed and their mechanisms illustrated.  It was determined that erosion subsidence is restricted to carbonate rocks and results in unpredictable and dangerous sinkholes and dolines.  Mining caused subsidence occurs in incompetent rockmasses and is predictable and can be controlled.
Notes: Offprint

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