HR: 14:50h
AN: H13J-05 INVITED    [Abstracts]
TI: Stress-Versus-Permeability Relationships of Fractures From In Situ Experiments
AU: * Rutqvist, J
EM: jrutqvist@lbl.gov
AF: Jonny Rutqvist, Lawrence Berkeley National Laboratory, Berkeley, CA 94720,
AB: Analysis of coupled hydrological and mechanical (HM) processes is of critical importance to many geological engineering practices. One key parameter in such analysis is a good estimate of the relationship between stress and permeability. A number of field studies for derivation of in situ stress-versus-permeability properties are reviewed, including borehole injection experiments, in situ block experiments, as well as recent data of permeability changes during eight years of heating and cooling in an underground large-scale heating experiment in highly fractured rock. It is concluded that because of great variability of hydraulic and mechanical properties in fractured rock, and the difficulties in using laboratory data for deriving in situ material properties, the stress versus permeability relationship of fractured rock masses are best characterized in situ.
DE: 1829 Groundwater hydrology
DE: 5104 Fracture and flow
DE: 8010 Fractures and faults
DE: 8020 Mechanics, theory, and modeling
DE: 8045 Role of fluids
SC: Hydrology [H]
MN: 2007 Fall Meeting