Geomechanical substantiation of the parameters of a continuous chamber system of mining with caving of the roof rock

Geomechanical assessment of combination geotechnology for thick flat-dipping ore bodies

“…Assessment of rock stability in pillars and roofs of the undercuts used the Mohr-Coulomb criterion [7,[9][10][11]. The post-limit deformation domains in the rock mass were found using the safety factor s K determined from the equation of straight line Mohr's envelope:…”

Geomechanical assessment of ore drawpoint stability in mining with caving

“…Stability of stopes is usually estimated based on mechanical theories on rock strength to depend on the rock stress-strain state [11][12][13][14][15][16]. The strength theories are the hypotheses on criteria describing conditions when rocks transfer to the limit state.…”

“…Mohr-Coulomb criterion according to which rocks fail when effective shear stress is equal the ultimate shear strength of the rocks. The rock stability factor stability K is found from the expression [11][12][13]16] C-cohesion, MPa; ϕ -internal friction angle, deg.…”