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Capturing early evolution of salt openings

49th US Rock Mechanics / Geomechanics Symposium 2015

Hansen, Francis D.; Howard, C.; Kuhlman, Kristopher L.; Holland, John H.

In situ tests implemented in a research facility mined from salt deposits, if planned appropriately, provide an opportunity to characterize the host rock before, during, and after excavation of test rooms. Characterization of the test bed is essential to interpret structural deformation, creation and evolution of the disturbed rock zone, and measurement of first-order hydromechanical properties as the salt evolves from an impermeable undisturbed state to a more-transmissive damaged state. The strategy expounded upon in this paper describes recommended geophysical measurements to characterize the initial state of a potential test bed and its evolution over the course of a field test. Discussion includes what measurements could be made, why the measurements would be made, how they are made, and how accurately they need to be made. Quantifiable parameters will establish field-scale boundary conditions and data quality objectives to characterize the test bed in an underground salt research facility.

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3 Results
3 Results