Research Article
Jul 1976
Analysis of Backpacked Liners
Authors: Sidiq M. Dar, M.ASCE, and Robert C. BatesAuthor Affiliations
Publication: Journal of the Geotechnical Engineering Division
Volume 102, Issue 7
Abstract
A set of theoretical equations has been developed that predict the stresses and displacements everywhere in a liner-backpacking support system of linearly elastic material. It is assumed that the field stresses are applied to the system after the liner has been placed, and the pressures due to the instability of the rock opening itself are not considered. Theoretical work is applicable to any number of concentric layers of material, thereby enabling one to handle underground situations where backpacking can be placed between liner and rock. Graphs showing the benefits and limitations of backpacking are given along with an example showing the effects of an ultrasoft layer of material surrounding the liner. These equations when applied to existing laboratory data show good agreement with measured values, and they have also guided the design of field liner installations.
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Published In
Journal of the Geotechnical Engineering Division
Volume 102 • Issue 7 • July 1976
Pages: 739 - 759
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Jul 1976
Published online: Feb 11, 2021
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Authors
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Sidiq M. Dar, M.ASCE
Mechanical Engineer; Spokane Mining Research Center, U.S. Bureau of Mines, and Associate Prof. of Civ. Engrg., Gonzaga Univ., Spokane, Wash
Robert C. Bates
Supervisor Mining Engr.; Spokane Mining Research Center, U.S. Bureau of Mines, Spokane, Wash
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.