Performance Evaluation of a Continuous Miner-Based Underground Mine Operation System Using the Overall Equipment Effectiveness (OEE) Approach.

This laboratory report presents a comprehensive performance evaluation of a Continuous Miner (CM)-based underground room-and-pillar mining system using the Overall Equipment Effectiveness (OEE) methodology. Analyzing operational data across a 35-day period, the study investigates the interactions between machine availability, operational performance, and production quality to identify primary productivity bottlenecks in mechanized underground coal extraction.The publication details the structural and functional breakdown of twelve core CM subsystems—including electrical, cutting, gathering, traction, hydraulic, conveyor, ram car, feeder breaker, and quad bolter units—while establishing empirical metrics for equipment reliability and maintainability (MTBF and MTTR). Through comparative graphical analysis, the report demonstrates that while subsystem availability and output quality remain at moderate-to-acceptable levels, highly erratic day-to-day performance serves as the dominant factor pulling down overall operational efficiency. The document concludes with targeted engineering and management recommendations focused on operator training, shift-to-shift consistency, and support equipment synchronization to optimize underground productivity.