Zotsenko, M. L. and Vynnykov, Yu. L. and Kharchenko, M. O. and Matyash, O. V. and Vovk, M. O. (2023) IMPROVEMENT OF THE INVESTIGATION OF PHYSICAL AND MECHANICAL CHARACTERISTICS OF SEDIMENTARY ROCKS BY EXPRESS METHODS. UNIVERSITAS Publishing. pp. 264-279.

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English abstract

Field and laboratory express methods for studying physical and mechanical pa- rameters of sedimentary rocks (penetration, static sounding, rotational displace- ment), as well as traditional methods of evaluating their mechanical properties, are considered. The peculiarities of detecting these characteristics for cohesive and non- cohesive sedimentary rocks are clearly divided. Theoretical prerequisites have been confirmed by experimental studies. It is proved that the objective credibility criteri- on of the reliability of the penetration and sounding characteristics is their invari- ance, embedded in the limit equilibrium equation. The method of determining the strength of sands based on the results of penetration and sounding has been devel- oped. For cohesive rocks, a method of combined testing by penetration and rotation- al shear is proposed for this. The results of experimental studies are presented, which confirm the sufficient convergence of the values of strength parameters ob- tained by standard and express methods. The generalization of experimental data is proposed according to the calculation schemes of the relationship of the properties of sedimentary rocks.

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