THE PHOTOELASTIC UNIDIRECTIONAL STRESSMETER. A BOREHOLE ROCK STRESS GAUGE
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
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The development, calibration and use of a simple and robust, unidirectional borehole rock stressmeter is described. Readout is in terms of the photoelastic isochromatic fringe order in a glass cylinder built into the meter. The meter, which is preloaded in the borehole, is intended for both stress change and absolute rock stress measurements.
- Geology, Geochemistry and Mineralogy
- Test Facilities, Equipment and Methods