Failure analysis of the granite for a dam foundation |
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Authors: | Haydar Arslan Leonardo Rosassanchez |
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Institution: | (1) Department of Civil Engineering, University of Colorado-Boulder, 428 UCB, Boulder, CO 80303, USA;(2) Department of Civil Engineering, University of Colorado-Boulder, 428 UCB, Boulder, CO, USA |
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Abstract: | This paper presents the numerical and experimental investigation of a dam foundation. The site consists of granite and especially
weathered granite. Numerical and analytical analyses have been conducted to evaluate suitability of the granite for a dam
foundation. Mohr–Coulomb failure criterion has been used to calculate the compressive strength of the rock mass. Finite element
implementation of Mohr–Coulomb criterion has been used for deformation and settlement analysis. Packer testing and in-situ
estimation of rock mass deformability using the Goodman jack have been performed. The results of the evaluations show that
very small normal and differential settlements can be expected in structural regions due to dam construction, and the compacted
concrete dam can safely be constructed on either the competent granite or the weathered granite. However, the dam foundation
on the weathered granite has high conductivity potential problems for the reservoir. |
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Keywords: | Mohr– Coulomb failure Dam construction Settlements Conductivity |
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