Underground Services
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:
- Block cave
- Stoping (Sublevel, Long-hole, Blind-Bench, Shrinkage, AVOCA method)
- Room and Pillar
- Post-Pillar
- Under- and Over-Hand Cut & Fill
- Retreat Cave
- Sublevel Cave
- 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