Geomechanical Evaluation of the Mining Situation in the Formation of the Dismantling Chamber and the Production of Dismantling

Aushev, E.V.; Cherepovskiy, A.A.; Лысенко, М. В.; Zayatdinov, D. F.; Pozolotin, A.S.

doi:10.18796/0041-5790-2019-11-20-26

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2022

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“…With the widespread development of computer technologies, the use of mathematical modeling based on effective numerical methods of finite or discrete elements is prevalent [20][21][22]. The elastic-plastic models implemented in them make it possible to obtain information (with some assumptions) about the state of the rock mass (pillars) and the redistribution of stresses in it as a result of the destruction of the latter.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of deformation characteristics of brittle rocks beyond the limit of strength in the mode of uniaxial servohydraulic loading

Господариков

Trofimov²,

Kirkin

2022

PMI

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One of the most reliable methods for assessing the physical and mechanical properties of rocks as a result of their destruction are laboratory tests using hard or servo-driven test presses. They allow to obtain reliable information about changes in these properties beyond the limit of compressive strength. The results of laboratory tests of rich sulfide ore samples are presented, which made it possible to obtain graphs of their extreme deformation. Both monolithic samples and samples with stress concentrators in the form of circular holes with a diameter of 3, 5 and 10 mm were tested. It was revealed that during the destruction of the samples, the modules of elasticity and deformation decrease by 1.5-2 times, and in the zone of residual strength – by 5-7 times.

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Section: Introductionmentioning

confidence: 99%