Essays about: "rock mass deformation"
Showing result 1 - 5 of 8 essays containing the words rock mass deformation.
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1. Back analysis of rock mass properties in the regional fault zone under Lake Mälaren
University essay from KTH/Jord- och bergmekanikAbstract : The properties of the surrounding rock mass in underground projects have significant impacts on the design and construction. However, it is quite challenging to evaluate rock mass properties due to the great uncertainties of the geological conditions. READ MORE
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2. Extraction of Backfilled Tailings in the Dannemora Mine – Economic Potential and Rock Stability Assessment
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : The cut-off grade determines what rock mass are economic to mine. At the Dannemora mine, in eastern Bergslagen, Sweden, previously processed ore generated tailings (enrichment sand) with an iron content of 21-22 % that was backfilled into large open bodies (stopes) in the mine between 2013-2015. READ MORE
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3. Assessment of static performance of LKAB´s welded mesh : Laboratory testing and analysis
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : Surface support is an areal support, which is installed on rock excavation surface to prevent bulking of rock mass and retain loose rock fragments. Welded wire mesh is one type of surface support. Literature study indicates that there is a wide range of testing methods on mesh. READ MORE
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4. Elastic properties of the Singö zone from a discrete approach
University essay from KTH/Skolan för arkitektur och samhällsbyggnad (ABE)Abstract : A rock mass is characterised by the properties of the intact rock and the fractures. Considering the impact of both constituents is of vital importance for assessing the behaviour of the rock mass. In particular in the case of complex or heterogeneous rock mass compositions. READ MORE
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5. Seismic tomography as an instrument for structural evaluation in the Printzsköld and Alliansen ore bodies, Malmberget
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : The Malmberget deposit is one of the major apatite iron ores in Europe, located in northern Norrbotten. As the mining in Malmberget proceeds deeper more challenges with the stability have been faced. When the stress distribution of a rock mass exceeds the rock strength energy in form of seismic waves is released. READ MORE