Mining Product: ARMPS - Analysis of Retreat Mining Pillar Stability
Original creation date: January 1994
ARMPS (Analysis of Retreat Mining Pillar Stability) is software for designing pillars for room-and-pillar retreat mining.
ARMPS calculates stability factors based on estimates of the loads applied to, and the load-bearing capacities of, pillars during retreat mining operations. The program can model the significant features of most retreat mining layouts, including angled crosscuts, varied spacing between entries, barrier pillars between the active section and old (side) gobs, and slab cuts in the barriers on retreat. It also features a pillar strength formula that considers the greater strength of rectangular pillars.
Release notes for version 6.2.02 (August 2013):
- Minor bug fixes
- Fixed operating system compatibility issues
- User interface improvements
Release notes for version 6.2.01 (October 2012):
- Recompiled with new libraries
- 16/32 bit controls have been replaced with 32/64 bit controls
- User interface improvements
- Program installer has been updated with more options and better checks for older installations
- Various bug fixes
- Tested for better functioning under Windows 7
ARMPS 6.1.04 has been updated to fix issues with the installer, example file validation, graphing, user interface, dialog naming and input field validation. This update also changes the default file directory to the user's "My Documents" folder. This update also rounds the calculated stability factor before comparing to the recommended stability factor to determine if a warning should be displayed.
ARMPS 6.0.29 has been updated following a study on deep cover retreat mining. New design guidelines for pillar stability are established in this revised version. The program now incorporates a pressure arch loading model that modifies the load distribution to the active retreat mining zone and the barrier pillars. The design recommendations will now take into account the panel width as well as the depth of cover in determining acceptable pillar designs for retreat mining. These improvements provide a more realistic assessment of the ground behavior in retreat mining and enhance the capability to analyze some of the newer mining plans such as those that incorporate bleeder control layouts.
The download file is a self-extracting executable which will automatically run a setup program.
Audience: Mine operators
Software (Windows) - August 2013
Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2013 Aug
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- Page last reviewed: 10/17/2012
- Page last updated: 10/30/2013
- Content source: National Institute for Occupational Safety and Health, Mining Program