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| | Abstract | | A compressive strength model of a large rock mass can be effectively and economically built if compressive strength can be estimated from seismic velocity. Sharma et al. (2011) found a simple relationship between these two properties in a triaxial compression test of artificially cemented soils, indicating that seismic velocity obtained with the seismic method can be used for estimating compressive strength of soils. To verify their findings for a real rock or rock mass, we have studied the relationship of compressive strength measured for rock core samples in the laboratory and S-wave velocity data obtained with laboratory ultrasonic measurements and well logging for soft sedimentary rocks. The results of the study show that there is also a simple relationship between compressive strength and seismic velocity derived dynamic shear modulus for a real rock and rock mass. Rock physics model can also support the conclusion. |
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