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In Situ Rock Temperature. Stress Investigations in Rock Quarries.

Authors
Hooker-VE; Duvall-WI
Source
NTIS: PB 206 357 :12 pages
Link
NIOSHTIC No.
10000804
Abstract
Near-surface temperature measurements in two granite quarries show that diurnal temperature variations are significant to a depth of 1 or 2 feet, and annual temperature variations are significant to a depth of at least 25 feet. As a result, ground stress anomalies due to temperature exist near the surface, and their magnitude depends upon the time of day and the time of year. Rock stress and corresponding temperature measurements were made in one granite quarry over a rock temperature range of 33 deg to 81 deg f. Measured rock temperatures show good agreement with values predicted from one-dimensional heat flow theory. Calculated and measured stress-temperature coefficients for the two granites in this study are given.
Publication Date
19710101
Document Type
IH; Report of Investigations
Fiscal Year
1971
NTIS Accession No.
PB-206357
NTIS Price
A03
Identifying No.
RI 7589
NIOSH Division
DRC;
Source Name
NTIS: PB 206 357
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