Determination of elastic properties of rocks under varying temperature

Resumo

The author performs the comparative analysis of the international standards on determination of elastic properties of rocks from uniaxial compression tests, with benefits and shortcomings of the standards presented. The measurement data on lateral and transverse strains obtained in rocks and model metal samples under compression using different type extensometers are reported. The scope of the analysis embraces applicability of extensometers to the determination of elasticity modulus and Poisson’s ratio in rocks under variation in temperature. Examples of estimating elastic properties in thawed and frozen rocks are given in terms of enclosing rocks at Botuobinskaya diamond pipe.