TY - GEN
T1 - The formation and properties of fault zones in brittle rock
AU - Kemeny, John M.
AU - Long, Jane C.S.
N1 - Funding Information:
This work was supported by the U.S. Department
Funding Information:
The helpful reviews by Steve Martel and Larry Myer are greatly appreciated. This work was supported by the U.S. Department of Energy under contract DE-AC03-76SF00098.
Publisher Copyright:
© 1989 Balkema, Rotterdam.
PY - 1989
Y1 - 1989
N2 - Seismic and radar tomography of the SCV underground test area in Stripa, Sweden have detected two major sets of fracture zones. Slickenside striations in these zones indicate that they have undergone shear deformation. Utilizing a database consisting of 3100 logged fractures from borehole core and 900 fractures mapped on the walls of underground drifts, the character of these fracture zones have been analyzed. This data along with numerical modelling suggest that the higher fluid conductivities in the zones compared with the surrounding rock may be due to a combination of higher fracture densities, and stresses in the zones that promote dilatancy in fractures with certain orientations. This would also result in anisotropic flow in the zones, with the primary flow direction in the direction of the dilatant fractures.
AB - Seismic and radar tomography of the SCV underground test area in Stripa, Sweden have detected two major sets of fracture zones. Slickenside striations in these zones indicate that they have undergone shear deformation. Utilizing a database consisting of 3100 logged fractures from borehole core and 900 fractures mapped on the walls of underground drifts, the character of these fracture zones have been analyzed. This data along with numerical modelling suggest that the higher fluid conductivities in the zones compared with the surrounding rock may be due to a combination of higher fracture densities, and stresses in the zones that promote dilatancy in fractures with certain orientations. This would also result in anisotropic flow in the zones, with the primary flow direction in the direction of the dilatant fractures.
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M3 - Conference contribution
AN - SCOPUS:85059305287
SN - 9061918715
SN - 9789061918714
T3 - 30th U.S. Symposium on Rock Mechanics, USRMS 1989
SP - 115
EP - 122
BT - 30th U.S. Symposium on Rock Mechanics, USRMS 1989
A2 - Khair, null
PB - American Rock Mechanics Association (ARMA)
T2 - 30th U.S. Symposium on Rock Mechanics, USRMS 1989
Y2 - 19 June 1989 through 22 June 1989
ER -