Essays about: "rock mechanics"

Showing result 1 - 5 of 7 essays containing the words rock mechanics.

  1. 1. Theoretical study of anisotropic effects in crystal growth on the example of concrete and calcium oxalate monohydrate

    University essay from Lunds universitet/Kemiska institutionen

    Author : Vilhelm Ekberg; [2019]
    Keywords : anisotropic crystal growth; COM; C-S-H; PM6; ReaxFF$_{ textrm{SiO}}$; organizing molecular matter; nanochemistry; nanokemi; Chemistry;

    Abstract : While many crystals, both natural and artificial, grow isotropically, there are examples of crystals growing anisotropically. The aim of this theoretical study was to confirm the growth modes displayed by three different crystals, representing 3D, 2D and 1D structures. READ MORE

  2. 2. Optimization of the steel-fiber dosage in shotcrete used in the Kankberg mine

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Pontus Larsson; [2018]
    Keywords : rock mechanics; shotcrete; bergmekanik; sprutbetong;

    Abstract : The Swedish metal company Boliden has since the early 20th century been mining deposits in the mining field commonly referred to as the Skelleftefield in northern Sweden. The youngest of the active mines is the Kankberg mine which is an underground mine whose reserve contains gold and tellurium. READ MORE

  3. 3. Mineral Constraints on the Source Lithologies at Fogo, Cape Verde.

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Elin Rydeblad; [2018]
    Keywords : olivine; clinopyroxene; carbonatite; Cape Verde; Eclogite; source lithologies;

    Abstract : Variations in major, minor, and trace elements compositions and ratios, as well as isotope ratios are all useful tools in studying the composition of the Earth’s mantle, and heterogeneities present therein. Since the mantle itself doesn’t easily lend itself to study, ocean island basalt (OIBs) are commonly used as a proxy due to compositional differences combined with the range of origination depth, a combination that allows them to represent the heterogeneity of the mantle, sampling everything from the core mantle boundary to the old or recent additions of recycled oceanic crust. READ MORE

  4. 4. Evaluation of the rock support system subjected to dynamic loads in Kiirunavaara

    University essay from Luleå tekniska universitet/Geoteknologi

    Author : Simon Krekula; [2017]
    Keywords : Rock mechanics; Rockburst; Seismicity;

    Abstract : LKAB’s underground mine in Kiirunavaara has experienced an increasing seismic activity the last ten years. This seismic activity is caused by the stress redistribution resulting from the mining method of large-scale sublevel caving. The energy from the seismic events propagate in the rock mass as seismic waves. READ MORE

  5. 5. Evaluation of roof-pillar interface and its effect on pillar stability in mine #101

    University essay from Luleå tekniska universitet/Geoteknologi

    Author : Viktor Lönnies; [2017]
    Keywords : Roof-pillar interface; rock mechanics; coal; numerical modelling; FLAC;

    Abstract : The company Rio Deserto is currently mining the famous Barro Branco coal seam in the state of Santa Catarina located in the south of Brazil. One of their coal mines, #101, is experiencing problems related to the pillars in one panel. READ MORE