Browsing by Author "e16b535f-6911-456e-8f79-e839dd6dfd25"

Now showing items 1-5 of 5

    • Open pit mine planning considering geomechanical fundamentals 
      Parra, Andrés; Morales, Nelson; Vallejos, Javier A.; Nguyen, Phu Minh Vuong (Taylor & Francis LTD, 2018)
      The objective of this study is to integrate the admissible factor of safety (FoS) into the mine planning. The analysis showed, as expected, that a lower net present value (NPV) is obtained with the increase in the admissible ...
    • Robust estimation of the fracture diameter distribution from the true trace length distribution in the ... 
      Hekmatnejad, Amin; Emery, Xavier; Vallejos, Javier A. (Elsevier SCI Ltd, 2018)
      A distribution-free approach is proposed to estimate the fracture size distribution from a given trace length distribution, assuming that the fracture network can be represented by a Poisson-disc model. This approach ...
    • Seismic Parameters of Mining-Induced Aftershock Sequences for Re-entry Protocol Development 
      Vallejos, Javier; Estay, Rodrigo (Birkhauser Verlag AG, 2018)
      A common characteristic of deep mines in hard rock is induced seismicity. This results from stress changes and rock failure around mining excavations. Following large seismic events, there is an increase in the levels ...
    • Stability assessment of underground mine stopes subjected to stress relaxation 
      Adoko, Amoussou Coffi; Vallejos, Javier; Trueman, Robert (Taylor & Francis, 2020)
      Stress relaxation plays an important role in the design of underground stopes. The aim of this paper is to assess the stope stability in connection with the stress relaxation using a classification approach. Three types ...
    • Three-dimensional effect of stresses in open stope mine design 
      Vallejos, Javier; Delonca, Adeline; Perez, Ernesto (Taylor and Francis Ltd., 2018)
      The stability graph method is widely used for open stope mine design. During the development of the method the effect of induced stresses were included by using two-dimensional or limited three-dimensional stress analysis. ...