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Technology News 516 - ARMPS-HWM: new software for sizing pillars for highwall mining.

Authors
NIOSH
Source
NIOSH 2006 Mar; :1-2
NIOSHTIC No.
20029777
Abstract
The use of highwall mining systems has increased substantially in open-pit coal mines. It is used where overburden depth exceeds economical recovery. Highwall stability remains the major safety concern during highwall mining. The Mine Safety and Health Administration requires highwall mining operators to follow ground control plans that specify the pillar sizes necessary to prevent a pillar collapse that would threaten highwall stability. NIOSH has developed the Analysis of Retreat Mining Pillar Stability-Highwall Mining (ARMPS-HWM) computer program to assist mine planners with pillar design. Based on extensive research into instances of highwall mining pillar instability and pillar collapses in underground mines, ARMPS-HWM uses the Mark-Bieniawski formula to estimate the strength of long strip pillars. The suggested design procedure addresses the following issues: (1) the number of holes between barrier pillars, (2) the size of the individual web pillars, (3) the size of the barrier pillars, and (4) the stability factor of the overall design. The program is simple to install and easy to use. It contains extensive "Help" files that provide more background on the research upon which design formulas are based. The Help files also contain suggestions for highwall mining through old auger holes and for close-proximity, multiple-split highwall mining.
Keywords
Computer-software; Mining-industry; Underground-mining; Hazards; Coal-mining; Safety-research; Injuries; Ground-control; Ground-stability; Surface-mining
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
Publication Date
20060301
Document Type
Technology News; Numbered Publication
Email Address
CMark@cdc.gov; RZipf@cdc.gov
Fiscal Year
2006
NTIS Accession No.
NTIS Price
Identifying No.
(NIOSH) 2006-128; TN-516
NIOSH Division
PRL
Priority Area
Disease and Injury: Traumatic Injuries
Source Name
National Institute for Occupational Safety and Health
State
PA
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