Rock Stress Determinations From Overcoring: An Overview
Description:
Bulletin describing the U.S. Bureau of Minds three-component borehole deformation gage and the overcoring techniques used in rock stress determination. The theoretical basis relating the deformation of a borehole to the in situ field stress is presented. Drilling equipment, accessories, and instrumentation necessary for the overcoring are presented, as well as the design, fabrication, operation, and calibration of the gage, site selection and proper overcoring procedures. (Abstract)
Date:
1993
Creator:
Bickel, David L.
Partner:
UNT Libraries Government Documents Department