Preliminary creep and pillar closure data for shales
The results of fourteen laboratory creep tests on model pillars of four different shales are reported. Initial pillar stresses range from 6.9 MPa (1000 psi) to 69 MPa (10,000 psi) and temperatures range from ambient to 100/sup 0/C. Laboratory response data are used to evaluate the parameters in the transient power-law pillar closure equation similar to that previously used for model pillars of rock salt. The response of the model pillars of shale shows many of the same characteristics as for rock salt. Deformation is enhanced by higher stresses and temperatures, although the shale pillars are not as sensitive to either stress or temperature as are pillars of rock salt. These test results must be considered very preliminary since they represent the initial, or scoping, phase of a comprehensive model pillar test program that will lead to the development and validation of creep laws for clay-rich rocks. 11 refs., 9 figs., 7 tabs.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5833761
- Report Number(s):
- ORNL/TM-10562; ON: DE88001512; TRN: 87-040307
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
SHALES
CREEP
COMPARATIVE EVALUATIONS
GEOLOGIC MODELS
MECHANICAL PROPERTIES
MINERALOGY
PRESSURE DEPENDENCE
ROCK MECHANICS
SALT DEPOSITS
TEMPERATURE DEPENDENCE
GEOLOGIC DEPOSITS
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MATERIALS
MECHANICS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
ROCKS
SEDIMENTARY ROCKS
WASTE DISPOSAL
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WASTES
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