Browsing by Subject "Underground mining"

Now showing items 1-7 of 7

    • A novel frequency domain visible light communication (VLC) three-dimensional trilateration system for ... 
      Firoozabadi, Ali Dehghan; Azurdia Meza, César; Soto, Ismael; Seguel, Fabian; Krommenacker, Nicolas; Iturralde, Daniel; Charpentier, Patrick; Zabala-Blanco, David (MDPI AG, 2019)
    • A VLC Channel Model for Underground Mining Environments With Scattering and Shadowing 
      Palacios Jativa, Pablo; Azurdia Meza, César; Sánchez, Iván; Seguel, Fabián; Zabala Blanco, David; Firoozabadi, Ali Dehghan; Gutiérrez, Carlos A.; Soto, Ismael (IEEE-Inst Electrical Electronics Engineers, 2020)
      Underground mining is an industry that preserves the miners' safety and efficiency in their work using wireless communication systems as a tool. In addition to communication links characterized by radio frequency signals, ...
    • Automatic determination of rock-breaking target poses for impact hammers 
      Cárdenas Nahuel, Daniel Germán; Parra Tsunekawa, Sebastián Isao; Leiva Castro, Francisco; Ruíz del Solar San Martín, Javier (MDPI, 2022)
      This paper describes a system for the automatic determination of rock-breaking target poses for impact hammers used in underground mines. The rock-breaking target pose is defined as the position and angle at which the ...
    • Bit error probability of VLC systems in underground mining channels with imperfect CSI 
      Palacios Jativa, Pablo Geovanny; Azurdia Meza, Cesar Augusto; Zabala Blanco, David; Gutiérrez, Carlos A.; Sánchez, Iván; Castillo Soria, Francisco R.; Seguel, Fabián (Elsevier, 2022)
      Analytical expressions of the statistical distribution of the underground mining visible light communication (UMVLC) square-channel gain are derived considering scattering, shadowing, and a random position and orientation ...
    • Interference mitigation for visible light communications in underground mines using angle diversity receivers 
      Palacios Játiva, Pablo Geovanny; Román Canizares, Milton; Azurdia Meza, César; Zabala Blanco, David; Dehghan Firoozabad, Ali; Seguel, Fabián; Montejo Sánchez, Samuel; Soto, Ismael (MDPI, 2020)
      This paper proposes two solutions based on angle diversity receivers (ADRs) to mitigate inter-cell interference (ICI) in underground mining visible light communication (VLC) systems, one of them is a novel approach. A ...
    • Productivity of a Continuous Mining System for Block Caving Mines 
      Orellana, L.; Castro, R.; Hekmat, A.; Arancibia, E. (Springer-Verlag Wien, 2017)
      Block caving mining is one of the most cost-effective underground mining methods. The method has particular relevance in the Chilean mining industry, where approximately 40% of the Chilean national copper production comes ...
    • Stope optimization with vertical convexity constraints 
      Nelis, Gonzalo; Gamache, Michel; Marcotte, Denis; Bai, Xiaoyu (Springer, 2016)
      A new algorithm for the optimal stope design problem is proposed. It is based on a previous methodology developed by Bai et al. (Comput Geosci 52:361-371, 2013a) where a cylindrical coordinate system is used to define ...