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Constitutive Relations of Coal and Coal Measure Rocks.
NTIS: PB/265-365 Available for Reference At Bureau Libraries :262 pages
The properties of coal from the Pittsburgh seam, procured from the Bruceton and Federal No. 2 Mines, were found to be similar. Strength and stiffness properties of beehive mine coal were determined, and the material was found to be isotropic. Mechanical, index, and geologic properties of roof and floor coal measure rocks from beehive mines were measured and correlated. Analytic formulations are given for coal creep under uniaxial loading, while triaxial creep is being investigated. Results of testing of coal model structures are compared with predictions from using several material models.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/265-365 Available for Reference At Bureau Libraries
University of Colorado
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division