Thesis Sistem Block Caving Mining

  • "Numerical modelling of mining subsidence, upsidence and ...

    Ground subsidence due to mining has been the subject of intensive research for several decades, and it remains to be an important topic confronting the mining industry today. In the Southern Coalfield of New South Wales, Australia, there is particular concern about subsidence impacts on incised river valleys – valley closure, upsidence, and the resulting localised loss of surface water under ...

  • Geotechnical factors

    Geotechnical factors

    Several caving mining methods are generally well suited for massive ore bodies, including iron ore, lowgrade copper, molybdenum deposits, other massive sulphide deposits, and diamondbearing kimberlite pipes (Hamrin, 2001). These include block caving, sublevel open stoping and bighole stoping, and sublevel caving.

  • Characterisation of primary copper ore for block caving at ...

    Characterisation of primary copper ore for block caving at ...

    A mine scale finite element numerical model was also built to assess the stress state around excavations during caving propagation. Damage orientation determination by seismic focal solutions was used to correlate against collected structural data to investigate the influence of weak discontinuities during block caving performance.

  • (PDF) Underground Mining Methods: Room and Pillar method

    (PDF) Underground Mining Methods: Room and Pillar method

    Underground mining: roomandpillar mining of thick seams –"Benching". Different approaches allow either the top or. bottom part of the seam to be mined out first. Note: the "hangingwall ...

  • Characterization and analysis of discontinuous subsidence ...

    Characterization and analysis of discontinuous subsidence ...

    While block caving presents an economic means to develop lower grade ore deposits, it often leads to significant ground deformations threatening the safety of overlying mine infrastructure. For guidance on relationships between caving depth and surface subsidence, a comprehensive

  • Design in Weak Rock Masses: Nevada Underground Mining ...

    Design in Weak Rock Masses: Nevada Underground Mining ...

    Mine Safety and Health Administration (MSHA) for the years 1990 through 2004 ... are geared to caving operations. The primary mining method used in Nevada is a form of mechanized cutandfill. ... support is deemed as support used to confine blocks that may

  • Associate Professor Italo Onederra

    Associate Professor Italo Onederra

     · Evaluation of intensive preconditioning in block and panel caving – part II, quantifying the effect on seismicity and draw rates. Mining Technology, 126 (4), 221239. doi: /

  • Estimation of the potential production rate ...

    Estimation of the potential production rate ...

    For this senario, a theoretical block caving iron mine will be considered. This mine has an expected reserve of 50 million tonnes. First, an appropriate version of Taylor's rule must be picked. Since this mine is a room and pillar mine, the most appropriate version would be Long's 2009 open pit and block caving .

  • Paper: Major hazards associated with cave mining: are they ...

    Paper: Major hazards associated with cave mining: are they ...

    Cuello, D Newcombe, G 2018, 'Key geotechnical knowledge and practical mine planning guidelines in deep, highstress, hard rock conditions for block and panel cave mining', in Y Potvin J Jakubec (eds), Proceedings of the Fourth International Symposium on Block and Sublevel Caving, Australian Centre for Geomechanics, Perth, pp. 17–36.

  • Methodology for evaluation of mud rush risk in block ...

    Methodology for evaluation of mud rush risk in block ...

    Tesis, artículos y libros ... Methodology for evaluation of mud rush risk in block caving mining Formato de cita . Copiar. Cerrar  Author. Vallejos ... Block and panel caving mines are prone to mud rushes in their production levels, with mud flowing from the drawpoints.

  • METHODOLOGY FOR OPTIMIZATION OF COEFFICIENT FOR ORE ...

    METHODOLOGY FOR OPTIMIZATION OF COEFFICIENT FOR ORE ...

    caving mining method, it is made basic model (block diagram) for the methodology, which is shown in Figure 1. Because this science paper considers the method of ore exploitation with sublevel caving mining, in which the coefficients of recovery/losses and ore dilution are in mutual

  • ARMA eNEWSLETTER SPRING 2013

    ARMA eNEWSLETTER SPRING 2013

    Caving mining methods have been employed successfully in the extraction of ore bodies since the late nineteenth century [Brown, (2003), "Block caving geomechanics." (The International Caving Study I, ), University of Queensland, JKMRC Monograph Series in Mining .

  • ICaRN

    ICaRN

    Thus, caving has a very different risk profile than open pit mining and other underground methods with one of the critical areas being Run of Mill (ROM) grades that are delivered to the mill. Though caving can match pits in terms of operating cost per ton, it suffers from limited grade selectivity with ROM grades trending toward the orebody average due to consequences of mixing in cave columns.

  • Planning mechanised cave with coarse fragmentation In ...

    Planning mechanised cave with coarse fragmentation In ...

    Thesis (PhD)University of Pretoria, 1998. tm2015. ... * The area that must be undercut to induce continuous caving. * The fragmentation that will result as the orebody caves and the fragmentation size ... by Premier Mine personnel into aspects of cave mining prior to the implementation of a panel retreat cave in the BA5 mining block.

  • A study of subsidence due to mining by block caving, San ...

    A study of subsidence due to mining by block caving, San ...

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  • An airblast hazard simulation engine for block caving ...

    An airblast hazard simulation engine for block caving ...

     · Airblast in block caving situations is a very dangerous situation with potential loss of life for operators and damage to mining equipment. 1 Airblasts occur when air pockets are present within the material that is currently being extracted through the drawpoints (). 2 As the material close to the drawpoints (defined as the muckpile) becomes stagnant, the block falling at the top of the air ...

  • The design and development of CaveCad: A state of the art ...

    The design and development of CaveCad: A state of the art ...

    The block caving mining method is being increasingly applied as a mass mining method used to exploit base metals and diamond resources. In block cave mining, geotechnical monitoring is fundamental to the successful management and operation of the mine.

  • Underground Mining Methods – EXCELLENCE IN MINING ...

    Underground Mining Methods – EXCELLENCE IN MINING ...

     · Block caving is a largescale or bulk mining method that is highly productive, low in cost, and used primarily on massive deposits that must be mined underground. It is most applicable to weak or moderately strong ore bodies that readily break up when caved. Both block caving and longwall mining are widely used because of their high productivity.