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STRESsOUT: A Data Reduction Program for Inferring Stress State of Rock Having Isotropic Material Properties. A User's Manual.

PB92170059

Publication Date	1992
Personal Author	Larson, M. K.
Page Count	172
Abstract	Researchers at the U.S. Bureau of Mines have developed a FORTRAN computer program that can calculate stress states from overcoring measurements obtained from hollow inclusion cells, triaxial cells, strain gauges installed on the wall of a bored raise, doorstopper gauges, borehole deformation gauges, or a combination of any of these gauges. Such stress states are calculated with reference to global and principal coordinate systems. The background of the development of the program, its capabilities, and its special features are described in this report, as well as the input required. Sample output is also shown in appendix C. Difficulties associated with numerical calculations of principal stresses and directions are pointed out. Threshold values for detecting these problems are reported; these values may be changed by the user as desired. Several test problems were set up to verify the computer program and were solved successfully.
Keywords	Rock mechanics Boreholes User manuals(Computer programs) Mining engineering Computer programs Stresses Strain measurement Strain gages Mathematical models Triaxial stresses Data reduction STRESsOUT computer program
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 48F - Geology & Geophysics
Corporate Authors	Bureau of Mines, Spokane, WA. Spokane Research Center.
Supplemental Notes	Library of Congress catalog card no. 91-21615.
Document Type	Technical Report
Title Note	Information circular/1992.
NTIS Issue Number	199213

STRESsOUT: A Data Reduction Program for Inferring Stress State of Rock Having Isotropic Material Properties. A User's Manual.

STRESsOUT: A Data Reduction Program for Inferring Stress State of Rock Having Isotropic Material Properties. A User's Manual.
PB92170059

Publication Date	1992
Personal Author	Larson, M. K.
Page Count	172
Abstract	Researchers at the U.S. Bureau of Mines have developed a FORTRAN computer program that can calculate stress states from overcoring measurements obtained from hollow inclusion cells, triaxial cells, strain gauges installed on the wall of a bored raise, doorstopper gauges, borehole deformation gauges, or a combination of any of these gauges. Such stress states are calculated with reference to global and principal coordinate systems. The background of the development of the program, its capabilities, and its special features are described in this report, as well as the input required. Sample output is also shown in appendix C. Difficulties associated with numerical calculations of principal stresses and directions are pointed out. Threshold values for detecting these problems are reported; these values may be changed by the user as desired. Several test problems were set up to verify the computer program and were solved successfully.
Keywords	Rock mechanics Boreholes User manuals(Computer programs) Mining engineering Computer programs Stresses Strain measurement Strain gages Mathematical models Triaxial stresses Data reduction STRESsOUT computer program
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 48F - Geology & Geophysics
Corporate Authors	Bureau of Mines, Spokane, WA. Spokane Research Center.
Supplemental Notes	Library of Congress catalog card no. 91-21615.
Document Type	Technical Report
Title Note	Information circular/1992.
NTIS Issue Number	199213