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Keywords: pillar
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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-081
... underground pillar design, the relation between the post-peak behavior of pillars and stiffness of the surrounding strata has been extensively studied. These two concepts play an important role in determining the failure mode of the coal pillars and the amount of potential energy that can be converted to...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-121
... bands were simulated by modified Goodman joint elements. The results of modeling of mine technical situations that precede gas outburst are presented for room-and-pillar method and longwall mining. 1. Introduction More than 30 potash deposits are developed or are in stage of prospecting in the world...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-009
... Abstract A first attempt of using the Room and Pillar mining method in the Czech Republic was implemented in the southern part of the Upper Silesian Coal Basin. This stratigraphical unit is well known for its complex geological structure with more than 40 main coal seams vertically distributed...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-040
... Abstract Utilization of coal reserves in the protection area of the coal mine gives the possibility of unusual mining methods. Just use methods room pillar in lignite coal mining is quite unusual opportunity. Application of the room pillar method can become very beneficial to the place where...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-002
... displacement operation crosscut wall movement procedia engineering 191 pillar rock mass instrumentation metals & mining th level stope height extraction deposit India shear stress stope height Procedia Engineering 191 ( 2017 ) 10 19 1877-7058 © 2017 Published by Elsevier Ltd. This is an...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-024
... stiff limestone occupied the middle of the exploited coal seam. A large-scale finite difference numerical model of the mine has been constructed by using FLAC 3D . The model simulates the area of the shaft with its irregular pillars and the longwall panels excavated between 1984 and 1993. The...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-122
... Abstract In the exploitation of water-soluble ore deposits, of particular importance is the preservation of the impermeability of the waterproofing layers. This is achieved by using a heading-and-stall method with a rigid pillar which excludes sharp deformation of impermeable layers. To...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-118
.... At the same time, as a rule, areas with very complex geological conditions are also used for mining, thus increasing the risk of technogenic accidents. In many cases, safe underground mining of potash and magnesia is ensured by the use of room and pillar system when the rib pillars are left in the...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-074
... Abstract A part of the coal reserves in the Karvina subbasin of the Upper Silesian Coal Basin is situated in protection pillars that lie under built-up areas. The longwall mining method is not suitable in these areas because significant deformation of the surface is not allowed. The room and...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-071
... metals & mining strength failure criterion geometry Upstream Oil & Gas criteria rock mass reservoir geomechanics criterion extraction open stope pillar Reservoir Characterization stope crown pillar rock mass behavior excavation Hoek stress state georgieva crown pillar...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-057
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Numerical simulation on pillar failure patterns T.H. Ma School of Civil Engineering, Dalian University of Technology, Dalian, PR China School of...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-079
... study is to further the confidence in the methodologies currently being developed for calculating energy releases associated with unstable rock failures, typically of pillars. A two-dimensional mine-scale model constructed in UDEC (Itasca 2014) reflects the loading conditions and excavation geom- etry...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-115
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 The behaviour of Merensky crush pillars as measured at a trial mining site M. du Plessis Lonmin Platinum, Marikana, South Africa D.F. Malan Department...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-085
... ABSTRACT: The aim of this paper is to study the mechanical behavior of a real pillar located in an abandoned gypsum mine in San Lazzaro di Savena (Bologna, Italy) through numerical simulations using a continuum to discontinuum hybrid approach. Continuum numerical simulations based on a Mohr...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-110
... ABSTRACT: The goal of this study is to improve the analysis of the stability of pillars and to answer the question of the choice of the pillar strength using an empirical approach. The pillar strength depends mainly on two factors: the uniaxial compression strength and the pillar geometry. We...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-118
... ABSTRACT: Nowadays, most of the rock pillar design methods have as a normal procedure the considerations of the scale effects between the laboratory tests results and the in situ parameters to be considered for behavior of the rock pillar prediction. Therefore, the authors of this paper have...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-150
... stability of underground workings.The constitutive behavior of the rock mass was modeled with Mohr Coulomb plasticity model. The result indicated rock block instabilities at the roof and sides of the pillars. Suggestive support measures such as rock bolting and shotcrete were proposed for the rock mass at...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-151
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Stability assessment of a pillar-supported basalt mine in Mendig (Germany) B. Bock & M. Alber Ruhr-University, Engineering Geology/Rock Engineering...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-141
... room-and- pillar quarries where the chalk was extracted now lie abandoned and endure the effects of time and weathering, increasing their risk of collapse. The risk of instability is an issue for more than 10 000 towns in France. We have studied the physico-mechanical behaviour and ageing of two types...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-161
... structural geology borehole hangingwall loading Upstream Oil & Gas convergence operation pillar Reservoir Characterization alteration pyroxenite investigation hangingwall alteration Bushveld Complex Lonmin hangingwall separation metals & mining top contact hangingwall...

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