Underground metal mines are changing in a faster manner in terms of production and safety. The requirement of higher production is increasing since decades. To fulfil this, the mechanisation of the mine is the key requirement. The drivage of raises is one of the major processes which requires mechanisation. The drivage of raise with the help of a Raise Borer Machine (RBM) can serve the purpose in terms of safer and faster raise excavation. The effect of torque and thrust on the rate of penetration of RBM has been examined in this study. The investigation has been carried out in Rampura Agucha Mine, Rajasthan on amphibolite rock type. Different operational data have been collected which affects the rate of penetration of RBM. Furthermore, Numerical simulation model has been also developed using Explicit Dynamics based modular of M/s ANSYS for parametric study. The output of the simulation model follows power trend with the applied thrust. A similar trend has been obtained with the experimental data. Hence it authenticates the numerical simulation-based output. The method employed in this work can be useful for determining the best raise boring machine operating parameters under various geological and geotechnical conditions.

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Assessment of Operational Parameters of a Raise Borer Machine for Raise Drivage in Hard Rock

  • A. K. Vishwakarma,
  • V. K. Himanshu,
  • V. M. S. R. Murthy,
  • M. Vishwakarma

摘要

Underground metal mines are changing in a faster manner in terms of production and safety. The requirement of higher production is increasing since decades. To fulfil this, the mechanisation of the mine is the key requirement. The drivage of raises is one of the major processes which requires mechanisation. The drivage of raise with the help of a Raise Borer Machine (RBM) can serve the purpose in terms of safer and faster raise excavation. The effect of torque and thrust on the rate of penetration of RBM has been examined in this study. The investigation has been carried out in Rampura Agucha Mine, Rajasthan on amphibolite rock type. Different operational data have been collected which affects the rate of penetration of RBM. Furthermore, Numerical simulation model has been also developed using Explicit Dynamics based modular of M/s ANSYS for parametric study. The output of the simulation model follows power trend with the applied thrust. A similar trend has been obtained with the experimental data. Hence it authenticates the numerical simulation-based output. The method employed in this work can be useful for determining the best raise boring machine operating parameters under various geological and geotechnical conditions.