TY - JOUR
T1 - Tomographic imaging of coal pillar conditions
T2 - Observations and implications
AU - Friedel, M. J.
AU - Jackson, M. J.
AU - Williams, E. M.
AU - Olson, M. S.
AU - Westman, E.
PY - 1996
Y1 - 1996
N2 - The U.S. Bureau of Mines (USBM) investigated the use of seismic refraction tomography (SRT) for identifying changes in pillar loading at the Foidel Creek coal mine near Steamboat Springs, Colo. The inherent three-dimensional problem of directly imaging coal pillar conditions is reduced to a single plane by considering only the load transmitted from the pillar to the adjacent floor rock. Floor strata velocity tomograms (at two pillar locations) illustrate that loading conditions are nonuniform and nonunique. Also, time sequence moni-toring, as the longwall face advanced, demonstrated that SRT can be used to image spatial changes in loading conditions. SRT offers the mining engineer a simple and flexible technique for evaluating pillar conditions and, thus, both present and alternative mine designs.
AB - The U.S. Bureau of Mines (USBM) investigated the use of seismic refraction tomography (SRT) for identifying changes in pillar loading at the Foidel Creek coal mine near Steamboat Springs, Colo. The inherent three-dimensional problem of directly imaging coal pillar conditions is reduced to a single plane by considering only the load transmitted from the pillar to the adjacent floor rock. Floor strata velocity tomograms (at two pillar locations) illustrate that loading conditions are nonuniform and nonunique. Also, time sequence moni-toring, as the longwall face advanced, demonstrated that SRT can be used to image spatial changes in loading conditions. SRT offers the mining engineer a simple and flexible technique for evaluating pillar conditions and, thus, both present and alternative mine designs.
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U2 - 10.1016/0148-9062(95)00061-5
DO - 10.1016/0148-9062(95)00061-5
M3 - Article
AN - SCOPUS:0030129042
SN - 0148-9062
VL - 33
SP - 279
EP - 290
JO - International Journal of Rock Mechanics and Mining Sciences and Geomechanics
JF - International Journal of Rock Mechanics and Mining Sciences and Geomechanics
IS - 3
ER -