Home – Home – Jornals – Fundamental and applied issues of mining 2021 number 1

The problem of penetrating a weighty rock mass with the Coulomb-Mohr plasticity condition with a rigid nondeformable wedge-shaped tool is being solved. In this case, the relations on the characteristics, as a consequence of differential equilibrium equations, are obtained by the terms that identify them with ordinary linear differential equations of the first order. As a result of equation integration, the required values of contact stresses at the “tool-rock” interface are determined. The ultimate load depends both on the angle of tool sharpening and physical/mechanical rock characteristics, and the depth of penetration.