Modify Selection
- Mine locations, excavations, and structures:
- Pillars
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Results 1 - 10 of 35
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7/1/2010 - Conference papersThis paper makes use of numerical models to examine the interaction between typical pillar systems and the surrounding rock mass for weak and strong geological conditions at various spans and depths of cover.
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2/1/2001 - Conference papersEvaluation of the "Advance and Relieve" mining method is described to determine effectiveness for conditions where high horizontal stresses caused long running roof falls resulting in hazardous conditions and the premature abandonment of panels.
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1/13/2023 - Research projectsA project to build the framework for expanding pillar design criteria into challenging environments by undertaking pillar response investigations in representative conditions at case study mine sites.
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5/1/2018 - Peer reviewed journal articlesA study in which laboratory testing was used to identify the engineering characteristics and brittleness of coal samples.
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10/22/2016 - Research projectsA project to update the database of case histories upon which the Analysis of Longwall Pillar Stability (ALPS) software bases its recommended stability factors.
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9/28/2012 - News articlesNIOSH's OMSHR is starting a new project to produce guidance and tools to improve management of rib fall hazards.
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7/1/2009 - Conference papersThis study extends the method of dynamic analysis to events driven by slip on geologic features.
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11/1/2008 - Peer reviewed journal articlesThis paper provides an assessment of the performance of limestone pillars as observed at 98 different locations in 34 mines in the Eastern and Midwestern regions of the United States.
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6/1/2008 - Peer reviewed journal articlesThis paper describes a modeling approach that can be used as a tool to evaluate potential roof failure and optimize the stability of room and pillar layouts.
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7/1/2007 - Conference papersA unique circumstance created by monitoring a pre-driven longwall recovery room permitted measuring the stresses of a coal pillar throughout its entire life cycle in less than a week. The complete transformation took place in less than 12 hours.
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Content source: National Institute for Occupational Safety and Health, Mining Program