The author proposes a new analytical approach to the description of static, kinematic and dynamic aspects of interaction between mine roof support and host rock mass in the course of coal extraction. Inclusion of the static component suggests the classical construction of a probable fracture line. The kinematic aspect means accounting for the influence of the overlying rock mass weight on the process of failure. The dynamics of failure during expansion of mined-out area is illustrated in terms of a unit event of production heading advance. Considered jointly, the three components of the damage accumulation process in rock mass allow more accurate control over destructive manifestation of rock pressure.
Journal of Mining Science – Springer Journals
Published: Jun 4, 2018
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