Correlations among Physical and Mechanical Parameters of Rocks

Abstract:

In order to improve the accuracy of the rock mechanical parameters, the correlations among physical and mechanical parameters were investigated. A large number of laboratory testing results curried out on 408 rock specimens including metamorphic rocks, sedimentary rocks and igneous rocks. Through the statistical analysis of the laboratory test data, several regression equations among rock material parameters were established. The research suggests that, in addition to Poisson's ratio, the mechanical parameters (unconfined compressive strength (UCS), elastic Young’s modulus, shear modulus) relate well to physical parameters (porosity, P-wave velocity), and the relationships are mainly described by power and exponential correlations which have good squared regression coefficients. The correlation between elastic Young’s modulus and dynamic elastic modulus was established, as well as the relationship between shear modulus and dynamic shear modulus.

• Periodical: Applied Mechanics and Materials (Volume 865)
• Pages: 366-372
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.865.366
• Online since: June 2017
• Authors: Jing Sen Liu*, Hai Bo Li, Guo Kai Zhang, Jian Deng
• Keywords: Mechanical Parameters, Physical Parameters, Regression Analysis, Rock Laboratory Testing

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