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Keywords: pillar stability
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0325
... ABSTRACT: The National Institute for Occupational Safety and Health (NIOSH) first developed the Analysis of Retreat Mining Pillar Stability (ARMPS) program to help the U.S. coal mining industry to design retreat room and pillar panels. Similar to other pillar design methodologies, ARMPS...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0011
... to pillar stability in longwall, room-and-pillar, and multiple seam mines, formation characterization, support requirements, etc. As cloud computing gains momentum, there is a definite need to develop internet based applications for mine design that would be accessible at all times, even underground where...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-224
... could not stand the overburden stress in some cases [4]. Backfilling can increase mine stability specifically pillar stability, as slurry applies confining pressure to the pillars [7]. Backfilling helped extraction ratio to be ARMA 15-224 Underground Disposal of Fine Coal Waste Siavash Zamiran Southern...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-499
.... Detailed FLAC3D modeling of the two seam mains geometries complements the results providing a realistic estimation of pillar stability using the Mohr Coulomb failure criteria. 1. INTRODUCTION Prudent design of coal pillars in any mining system requires an estimation of in-situ pillar strength...
Proceedings Papers

Paper presented at the The 30th U.S. Symposium on Rock Mechanics (USRMS), June 19–22, 1989
Paper Number: ARMA-89-0419
..., Denver, Colo., USA ABSTRACT: The effects of stress distribution on pillar stability were evaluated through rock mechanics tudies conducted in three underground room-and-pillar coal mines. Results of the three field instrumentation programs are presented to illustrate the use of borehole pressure cells...
Proceedings Papers

Paper presented at the The 30th U.S. Symposium on Rock Mechanics (USRMS), June 19–22, 1989
Paper Number: ARMA-89-0395
... compressive strength from the laboratory and back-calculations from in-mine observations of pillar stability indicate that material strength scaling rules are open to debate. Analyses presented indicate that the application of scaling factors lower than 0.5 provide a better correlation with field observations...
Proceedings Papers

Paper presented at the The 23rd U.S Symposium on Rock Mechanics (USRMS), August 25–27, 1982
Paper Number: ARMA-82-1107
... levels of room and pillar workings, again monitoring pillar stability. The results showed no signs of increased instability. INTRODUCTION At Lynemouth colliery, Northumberland, England, all the coal workings are under the North Sea, and extend approximately 8 km from the coast. The mine is divided...
Proceedings Papers

Paper presented at the 20th U.S. Symposium on Rock Mechanics (USRMS), June 4–6, 1979
Paper Number: ARMA-79-0075
... PARAMETERS Rock mechanics research has been carried out by the Department of Mining Engineering at the University of Newcastle upon Tyne, England at British Gypsum''s Sherburn mine since its initial development in 1966. Wellbore Design dimension reservoir geomechanics pillar stability...

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