The use of instrumented split-set rock bolts to monitor strain in the walls of a deep underground mine stope.
Williams-T; Denton-D; Johnson-J; Maciosek-F; Maslowski-M
2004 SME Annual Meeting, Feb 23-25, Denver, Colorado, Preprint 04-14. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2004 Feb; :1-9
Researchers from the Spokane Research Laboratory of the National Institute for Occupational Safety and Health and personnel from Coeur Silver Valley, Wallace, ID, conducted tests using rock strain strips and Split-Set rock bolts instrumented with strain gauges to monitor wall rock strain at the Galena Mine, Osburn, ID. The objective of the test was to identify whether strain on the rock bolts increased prior to a rock burst. Although results were inconclusive, researchers learned that the Split-Set rock bolts yielded in stick-slip fashion in the highly jointed walls of the stope. The bolts were also bent as stress was redistributed following blasting and subsequent movement along joints in the wall rocks.
Mining-industry; Rock-falls; Engineering-controls; Monitoring-systems; Accident-prevention; Underground-mining; Geology; Rock-bursts; Rock-mechanics; Injury-prevention; Control-technology
Research Tools and Approaches: Control Technology and Personal Protective Equipment
2004 SME Annual Meeting, Feb 23-25, Denver, Colorado, Preprint 04-14