Development of Rock Stress Gage

THE CONCEPT COMBINES INHERENT LACK OF SIGNIFICANT SENSITIVITY TO UNWANTED STRESS COMPONENTS WITH PRACTICALITY OF COUPLING TO ROCK WITH LITTLE OR NO GROUT. BUILDING ON A FOUNDATION OF GHOROUGH THEORETICAL ANALYSIS AND DEMONSTRATION OF MANUFACTURING FEASIBILITY BASED ON PREVIOUS WORK, THE OBJECTIVE IS TO VERIFY KEY ASPECTS IN THE LABORATORY. THIS WILL INCLUDE VERIFICATION OF LACK OF CROSS-AXIS SENSITIVITY, SURVIVAL AND ABSENCE OF SPURIOUS SIGNALS IN CONTROLED IMPACT LOADING, AND STATIC MEASUREMENT OF GAGE REGISTRATION IN ROCK BLOCKS UNDER WELL- DEFINED CONDITIONS IN A TRIAXIAL TEST CHAMBER.