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Journal of Mining Sciences

2017 year, number 5

Enclosing Rock and Support Interaction during Mining

V. E. MIRENKOV
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: выработка, очистные работы, напряжения, смещения, накопление повреждений, разрушение, вес пород, крепление, процесс взаимодействия, underground opening, stoping, stresses, displacements, damage accumulation, fracture, overlying rock weight, support, interaction process

Abstract

The author proposes a new analytical approach to the description of statics, kinematics and dynamics of interaction between mine support and enclosing rock mass in the course of stoping. Inclusion of the static component suggests the classical construction of a probable line of fracture. The kinematic aspect means accounting for the influence of the overlying rock weight on the process of failure. The dynamics of failure during growth of mined-out area is illustrated in terms of a unit event of production heading advance. These components of the damage accumulation process in rock mass allow more accurate monitoring of destructions due to rock pressure.