Abstract
The determination of the permeability behaviour of fractured rocks is of essential importance for the judgement of necessary grouting measures. Geoelectrical self-potential measurements in connection with water pressure tests and grouting experiments in rock masses were carried out to determine preferred flow paths of water or cement in relation to the joint system.
The self-potential measurements proved to be closely related to the amount of water or cement absorption in the pressure-gauge borehole. The differences between the self-potential measuring values, calculated for various pressure/water or cement absorption proportions in the pressure-gauge boreholes, indicate an anisotropic system of water or cement pathways, especially in the statistical evaluation of the directions of self potential isolines. Use of this method may help to define the main water paths in fractured rocks and to determine the anisotropy of rock permeability.
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References
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© 1989 Springer-Verlag
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Hötzl, H., Merkler, GP. (1989). Self-potential measurements to determine preferred waterflow in fractured rocks. In: Merkler, GP., Militzer, H., Hötzl, H., Armbruster, H., Brauns, J. (eds) Detection of Subsurface Flow Phenomena. Lecture Notes in Earth Sciences, vol 27. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0011638
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DOI: https://doi.org/10.1007/BFb0011638
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