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The Microtunneling Research Institute (MRI) is a focused portion of the Earth Mechanics Institute (EMI) at the Colorado School of Mines (CSM). 

Current testing, design, and engineering programs for microtunneling:

  • Physical Property Testing
  • Borehole Evaluation/Analysis
  • Rock/Soil Mass Classifications
  • Full Scale Cutter and Cutterhead Laboratory Testing for preferred cutter selection, optimum cutting geometry and machine specifications (thrust and power)
  • Selection of Machine Type (slurry versus auger system)
  • Cutterhead Design and Optimization
  • Performance Predictions for penetration rates, system utilization, and advance rates
  • Cutter Cost Evaluations
  • Machine and Ancillary Equipment Availability

Microtunneling Projects:

Testing and Performance Evaluation of a 32-inch Cutterhead using Mini Disc Cutters

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