Vertical Stress Isobars for Silos and Square Backfilled Mine Stopes
Publication: International Journal of Geomechanics
Volume 16, Issue 2
Abstract
Often granular materials are stored in vertical containers with circular or square cross sections. The storage material can be food grains, pharmaceutical powders, chemical pellets, or geomaterials such as mine fills. The design and analysis of these containers require adequate knowledge of the stresses developed within the filled material. The stress isobars developed herein enable the designers to estimate the vertical stress at any point within the fill contained in a silo. The same isobars can also be used for square cross sections, as in the case of backfilled underground mine stopes, without sacrificing the accuracy much. The same method was previously followed by the authors in developing isobars for plane-strain situations. On the basis of the two sets of isobars for trenches and square stopes, it is possible to interpolate the stresses for other rectangular mine stopes, which can serve as good first estimates in the designs.
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Published In
International Journal of Geomechanics
Volume 16 • Issue 2 • April 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Mar 8, 2014
Accepted: Feb 12, 2015
Published online: May 19, 2015
Discussion open until: Oct 19, 2015
Published in print: Apr 1, 2016
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