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Deformational behavior of model pillars made from salt, trona, and potash ore


, : Deformational behavior of model pillars made from salt, trona, and potash ore. Pages 539-560 1964

The objectives of this investigation were to develop a model pillar that is realistically related to its prototype in the mine, and to study the strength and deformational behavior of the model pillars. Six models were prepared for creep tests from each of the following: salt from Detroit, Mich., and Lyons, Kans.; trona from Green River, Wyo.; and potash ore from Carlsbad, N. Mex. The creep curves for the model pillars are similar to those obtained by other investigators, and the creep rate in both model and mine pillars varies as some power of the applied pillar load. However, there appears to be a significant difference in the exponent of the pillar stress from model and in situ tests.

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