Analysis of Time-to-Time Variation of Load Exerted on Interchamber Pillars in Mines of the Upper Kama Potash Salt Deposit
A. A. BARYAKH, S. YU. LOBANOV, I. S. LOMAKIN
Mining Institute, Ural Branch, Russian Academy of Sciences, ul. Sibirskaya 78a, Perm, 614007 Russia
Keywords: целики, кровля, математическое моделирование, степень нагружения, разрушение, длительная прочность, pillars, roof, mathematical modeling, loading, failure, long-term strength
Abstract
The procedure to estimate growth in load exerted on interchamber pillars with time is based on mathematical modeling of stresses and strains in structural elements of room-and-pillar mining method using roof rock failure criteria. The calculation results illustrate a real time scale of variation in strength of rocks and the associated partial collapse of a parting and failure of edges of interchamber pillars when their height is increased.
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