TY - GEN
T1 - Integrated application of borehole radar reflection and resistivity tomography to delineate fractures in granite quarry mine
AU - Yi, Myeong Jong
AU - Kim, Jung Ho
AU - Cho, Seong Jun
AU - Sato, Motoyuki
PY - 2004/12/1
Y1 - 2004/12/1
N2 - To delineate the inhomogeneities including fractures and to estimate the freshness of rock, borehole radar and resistivity tomography surveys were conducted at a granite quarry mine in Korea. Borehole radar reflection images were obtained at five boreholes and we could get high resolution image of fractures. Spatial orientations of fractures, however, could not be attained because of omni-directional characteristic of antennas. Radar tomography method, a very useful method to estimate the freshness of rock, was also applied but we failed to get images of fractures because vertical fractures were dominant in this site. To get tomographic image of vertical fractures, we conducted the resistivity tomography over 8 sections. Although resistivity tomography method provides very low resolution image of the subsurface compared to radar method, we could get tomographic images of vertical fractures. Spatial orientations of fractures were easily obtained by joint interpretation of radar reflection and resistivity tomography images, and we could accurately define the fractures in 3-D manner.
AB - To delineate the inhomogeneities including fractures and to estimate the freshness of rock, borehole radar and resistivity tomography surveys were conducted at a granite quarry mine in Korea. Borehole radar reflection images were obtained at five boreholes and we could get high resolution image of fractures. Spatial orientations of fractures, however, could not be attained because of omni-directional characteristic of antennas. Radar tomography method, a very useful method to estimate the freshness of rock, was also applied but we failed to get images of fractures because vertical fractures were dominant in this site. To get tomographic image of vertical fractures, we conducted the resistivity tomography over 8 sections. Although resistivity tomography method provides very low resolution image of the subsurface compared to radar method, we could get tomographic images of vertical fractures. Spatial orientations of fractures were easily obtained by joint interpretation of radar reflection and resistivity tomography images, and we could accurately define the fractures in 3-D manner.
KW - Borehole radar reflection
KW - Granite quarry
KW - Resistivity tomography
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M3 - Conference contribution
AN - SCOPUS:16244403992
SN - 9090179593
T3 - Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004
SP - 213
EP - 216
BT - Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004
A2 - Slob, E.
A2 - Yarovoy, A.
A2 - Rhebergen, J.B.
T2 - Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004
Y2 - 21 June 2004 through 24 June 2004
ER -