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Mining Publication: Field Tests of Cable Bolts Using Instrumented King Wires
Keywords: Cable bolts Ground control
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: March 2000
Authors: LA Martin, R Pakalnis, RP Curtin
Conference Paper - March 2000
Download PDF Document (0.94 MB)
NIOSHTIC2 Number: 20021238
Presentation at the Canadian Institute of Mining, Metallurgy, and Petroleum--CIM 2000 Meeting, 2000, Mar 5-10 Toronto, Ontario, Canada :1-10
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 to monitor rock mass loads at various field sites (T.G. Soda Ash, Getchell, Meikle, SSX, K-2, and Stillwater). Axial and shear loads were determined by strain gages to levels of instrument accuracy of ±5 N or ±5 microstrain as these loads were transferred to the instrumented cable bolts. These gages were 12.5 mm long and embedded into 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 gage locations. By monitoring load on and displacement of the rock mass, more effective ground support can be selected and installed, which will lead to safer working conditions for miners.
Image of publication Field Tests of Cable Bolts Using Instrumented King WiresConference Paper - March 2000
Download PDF Document (0.94 MB)
NIOSHTIC2 Number: 20021238
Presentation at the Canadian Institute of Mining, Metallurgy, and Petroleum--CIM 2000 Meeting, 2000, Mar 5-10 Toronto, Ontario, Canada :1-10
See Also
60 Years of Rockbursting in the Coeur D'Alene District of Northern Idaho, USA: Lessons Learned and Remaining Issues
Comparison of Ground Conditions and Ground Control Practices in the United States and Australia
Determination of In Situ Deformation Modulus for Cemented Rockfill
Dynamic Failure in Deep Coal: Recent Trends and a Path Forward
Evaluation of Instrumented Cable and Rebar Bolts as Ground Support at a Trona Mine
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: June 4, 2015
Page last updated: June 4, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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