Review of current capabilities for the measurement of stress, displacement, and in situ deformation modulus
Current capabilities for the measurement of stress, displacement, and in situ deformation modulus in rock masses are reviewed as to their accuracy, sensitivity, advantages, and limitations. Consideration is given to both the instruments themselves and the measurement technique. Recommendations concerning adaptation of existing measurement techniques to repository monitoring are also discussed. These recommendations include: (1) development of a modified borehole deformation gage with improved long-term stability and reliability and reduced thermal sensitivity; (2) development of a downhole transducer type of extensometer; (3) development of a rigid inclusion type gage; (4) development of an improved vibrating wire stressmeter with greater accuracy and simplified calibration and installation requirements; and (5) modification of standard rod extensometers to improve their sensitivity.
- Research Organization:
- Terra Tek, Inc., Salt Lake City, UT (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5246039
- Report Number(s):
- ONWI-95
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
ACCURACY
BOREHOLES
CAVITIES
DEFORMATION
DISPLACEMENT RATES
EXTENSOMETERS
GEOLOGIC FORMATIONS
MANAGEMENT
MEASURING INSTRUMENTS
MEASURING METHODS
NUCLEAR FACILITIES
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
ROCKS
SENSITIVITY
STRAIN GAGES
STRESSES
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE MANAGEMENT