CNI provides innovative geotechnical engineering consulting services to underground mine design of all levels. CNI has experience in evaluating underground mining projects at the PEA, pre-feasibility, feasibility and operating stages. CNI’s vast work history include evaluations for the following mining methods:

  1. Block cave
  2. Stoping (Sublevel, Long-hole, Blind-Bench, Shrinkage, AVOCA method)
  3. Room and Pillar
  4. Post-Pillar
  5. Under- and Over-Hand Cut & Fill
  6. Retreat Cave
  7. Sublevel Cave
  8. Longwall

Our Underground Geotechnical Services Include:

  • Mine method evaluation and sequence selection
  • Pillar stability
  • Stope stability analysis and optimization
  • Ground support system selection, design, and implementation
  • Installation and interpretation of instrumentation for the monitoring of underground excavations and ground support performance
  • Ground control management plan development
  • Shotcrete and cemented-backfill recipe selection and design
  • High confidence Ground support selection for underground infrastructure
  • Rock mass characterization and mapping methods
  • QA/QC and auditing for the installation and performance of ground control systems
  • QA/QC and auditing of sprayed shotcrete and cemented grouts and backfill
  • Groundfall investigation, analysis, and remediation
  • Ground support rehabilitation planning and design