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Mining Product: Ground Support Factor of Safety Calculator
Keywords: Cable bolts Non-tensioned full contact bolts Support design and selection
Original creation date: October 2020
Authors: S Warren, M Young, M Raffaldi, D Chambers, J Britton, D Benton
Software (Windows) - February 2022
Version: 1.1.11
Download ZIP (65.48 MB)
Spokane, WA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2020 Oct
The Ground Support Factor of Safety Calculator software calculates deadweight factor of safety (FoS) for an underground mining excavation’s ground support design based on user inputs and methods described by Pakalnis [2008, 2014]. Both two-dimensional (2D) design and 3-dimensional (cone) options are available for drift and intersection design, respectively.
**Limitations**
The software is intended for the static design of rock reinforcement (cables and rockbolts) against estimated deadweight rock loads. It does not consider ground deformations or more complex loading mechanisms. Also, this design methodology does not consider surface support for the ground between rockbolts. This method was developed through experience in weak rock mass “hard rock” mines, at shallow to moderate depths. In the U.S. it has been successfully implemented at depths less than 4000 ft. below ground surface. The applicability of this design methodology outside these conditions has not been assessed. User should consult available published surface support design methodologies for such guidance.
Installation Notes:
Download and unzip the installer to a local folder.
Open the Installer folder and run**GroundControlFOS_Setup.msi**.
Check the ReadMe.txt for details on installation requirements.
3D of support cone in intersection with roof bolts indicated.Software (Windows) - February 2022
Version: 1.1.11
Download ZIP (65.48 MB)
Spokane, WA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2020 Oct
See Also
A Case Study of Bolt Performance in a Two-entry Gate Road
Determination of Physical Properties of Cable Bolts in Cement Grout Pull Tests Using Instrumented King Wires
Diagnosing and Controlling Moisture-Sensitive Roof in Coal Mines
Optimizing Secondary Roof Support with the NIOSH Support Technology Optimization Program (STOP)
Overview of Coal Mine Ground Control Issues in the Illinois Basin
Pillar and Roof Span Design Guidelines for Underground Stone Mines
Preventing Falls of Ground in Coal Mines With Exceptionally Low-Strength Roof: Two Case Studies
Technology News 482 - Ground Support Safety Training Video
Tests of Fibre-Reinforced Shotcrete at the Chief Joseph Mine, Butte, Montana
Updating the NIOSH Support Technology Optimization Program (STOP) With New Support Technologies and Additional Design Features
Page last reviewed: March 21, 2022
Page last updated: February 23, 2022
Content source: National Institute for Occupational Safety and Health, Mining Program
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