Creep in model pillars. [Salt, trona, and potash ore]

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Description

A study was made of the deformational behavior (creep) of pillars made from three quasi-plastic rock--salt, trona, and potash ore. The first phase of this study considers the design of a model pillar suitable for creep tests; in the second phase, six model pillars were prepared from salt from two sources, from trona, and from potash ore. The pillars in each group were subjected to a different but constant axial stress, and the axial strain was measured for 1,000 hours. An analysis of the data shows that in general the creep rate for these model pillars can be expressed by ... continued below

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Pages: 29

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Obert, L. March 1, 1965.

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Description

A study was made of the deformational behavior (creep) of pillars made from three quasi-plastic rock--salt, trona, and potash ore. The first phase of this study considers the design of a model pillar suitable for creep tests; in the second phase, six model pillars were prepared from salt from two sources, from trona, and from potash ore. The pillars in each group were subjected to a different but constant axial stress, and the axial strain was measured for 1,000 hours. An analysis of the data shows that in general the creep rate for these model pillars can be expressed by the relationship .epsilon = K/sub 1/ sigma/sub 0//sup n/, where .epsilon is the strain rate, sigma/sub 0/ is the applied stress, and K/sub 1/ and n are constants. For the rocks included in this test, n ranged from 2.4 to 3.3.

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Pages: 29

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Bureau of Mines, Washington, DC.

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  • Report No.: BM-RI-6703
  • Grant Number: W-7405-ENG-26 U
  • DOI: 10.2172/7106658 | External Link
  • Office of Scientific & Technical Information Report Number: 7106658
  • Archival Resource Key: ark:/67531/metadc1418222

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • March 1, 1965

Added to The UNT Digital Library

  • Jan. 23, 2019, 12:54 p.m.

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Obert, L. Creep in model pillars. [Salt, trona, and potash ore], report, March 1, 1965; United States. (https://digital.library.unt.edu/ark:/67531/metadc1418222/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.