Mining Publication: Evaluation of Instrumented Cable and Rebar Bolts as Ground Support at a Trona Mine
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Original creation date: August 2001
Instrumented cable bolts developed at the Spokane Research Laboratory of the National Institute for Occupational Safety and Health were used in conjunction with existing ground control systems to monitor rock mass loads at Tg Soda Ash's trona mine, Granger, WY. Axial and shear loads were determined to levels of strain gauge accuracy of ±5 N or ±5 microstrain. These gauges were embedded in a remanufactured king wire that replaced the conventional king wire. Cable bolt performance, quality of grout, and installation techniques were also assessed. By using instrumented cables, a mine operator can determine axial load along the cable at predefined gauge locations. These data provide necessary input for an operator to design a safer working environment for miners.
Authors: LA Martin, CA Dreesbach, R Pakalnis
Conference Paper - August 2001
NIOSHTIC2 Number: 20021386
20th Intl Conf on Ground Control in Mining. Morgantown, WV: West Virginia University, 2001 Aug; :309-316
See Also
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- Dynamic Failure in Deep Coal: Recent Trends and a Path Forward
- Field Tests of Cable Bolts Using Instrumented King Wires
- Horizontal Stress and Longwall Headgate Ground Control
- Numerical Model Calibration for Simulating Coal Pillars, Gob and Overburden Response
- Roof Screening for Underground Coal Mines: Recent Developments
- Updating the NIOSH Support Technology Optimization Program (STOP) With New Support Technologies and Additional Design Features
- Variation of Horizontal Stresses and Strains in Mines in Bedded Deposits in the Eastern and Midwestern United States
- Page last reviewed: 11/19/2015
- Page last updated: 11/19/2015
- Content source: National Institute for Occupational Safety and Health, Mining Program