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Results 1 - 10 of 42
8/20/2013 - PC softwareSoftware for designing pillars for longwall mines
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.
2/1/2005 - Conference papersHighwall stability remains a major concern during highwall mining. Geologic structure (hillseams) and pillar stability are the two major factors affecting highwall stability.
Advance and Relieve Mining: A Method to Mitigate the Effects of High Horizontal Stress on the Mine Roof2/1/2001 - 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.
1/1/2020 - Peer reviewed journal articlesThe article presents seven cases of conventional gas wells within chain pillars and discusses how numerical modeling can provide a more quantifiable approach to assess the stability of the gas wells.
Experimental Study on the Confinement-Dependent Characteristics of a Utah Coal Considering the Anisotropy by Cleats5/1/2018 - Peer reviewed journal articlesA study in which laboratory testing was used to identify the engineering characteristics and brittleness of coal samples.
3/30/2017 - 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.
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.
9/28/2012 - News articlesNIOSH's OMSHR is starting a new project to produce guidance and tools to improve management of rib fall hazards.
7/1/2009 - Conference papersThis study extends the method of dynamic analysis to events driven by slip on geologic features.