Essays about: "rock pillar support"
Found 2 essays containing the words rock pillar support.
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1. Optimization of support in rock pillars between two parallel tunnels
University essay from KTH/Jord- och bergmekanikAbstract : When two parallel tunnels are excavated under high to moderate horizontal in-situ stresses combined with minor deformations in the pillar between the tunnels, the in-situ stresses can be redistributed over the tunnels in form of two compressive arches and are transferred from the roof to the abutments of the two tunnels. At additional deformations in the pillar, a new redistribution of the stresses can occur creating one compressive arch over both of the tunnels. READ MORE
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2. Numerical Modelling Study of Low-rise Mining at the Tara Mine
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : The following report is the results of a master thesis project performed on the behalf of Boliden Tara Mines. The work includes a numerical modelling study with the main purpose to evaluate the room- and pillar stability for the mining method "drift-and-slash" mining currently used in the Tara Mine when mining in thin, low-rise lenses. READ MORE