Relative stress conditions in an underground pillar, Homestake Mine, Lead, SD.
Scott-DF; Williams-TJ; Freidel-MJ; Denton-DK
Proceedings of the 36th U.S. Rock Mechanics Symposium, New York: Columbia University; :278
One of the basic problems in hard-rock mining associated with deep (>2000 m) underground deposits is high stress, which frequently results in failure, both gradual and violent, of the rock mass. Violent failure of rock in areas where miners are present is a severe safety hazard. Personnel from the Spokane Research center, a division of the National Institute for Occupational Safety and Health (NIOSH), have been investigating the use of three-dimensional seismic tomography to detect hazardous ground conditions and monitor the mechanical integrity of a rock mass. This technique was used to determine relative stress in an underground pillar on the 7400 level (about 2256 m below the surface) of the Homestake Mine, Lead, South Dakota.
Underground-mining; Mining-industry; Ground-control; Ground-stability; Geology; Rock-mechanics
Proceedings of the 36th U.S. Rock Mechanics Symposium, New York, NY