Essays about: "rock pillar stability"

Found 4 essays containing the words rock pillar stability.

  1. 1. Optimization of support in rock pillars between two parallel tunnels

    University essay from KTH/Jord- och bergmekanik

    Author : Alexander Kote; Sohaib Ishaq; [2022]
    Keywords : tunnel; rock pillar support; rock pillar stability; rock mass; stresses; arching effect; Nyckelord: tunnel; bergförstärkning; bergpelare; bergmassa; spänningar; valveffekt;

    Abstract : 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

  3. 2. Numerical Modelling Study of Low-rise Mining at the Tara Mine

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

    Author : Sara Suikki; [2018]
    Keywords : Numerical modelling; drift-and-slash; drift-and-fill; Mining; Boliden; FLAC; FLAC3D;

    Abstract : 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

  4. 3. STABILITY ANALYSIS OF A LONGWALL MINING IN NARVA OIL SHALE MINE

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

    Author : Ott Oisalu; Taavi Lõhmuste; [2017]
    Keywords : longwall mining; oil shale; stability analysis; chain pillars; barrier pillar; slope stability;

    Abstract : Oil shale industry in Estonia is looking at other mining technologies as alternative to strip mining and room and pillar mining methods. One such alternative to the room and pillar method is the punch-longwall mining method. READ MORE

  5. 4. 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