Study on the application of biomechanics in the safety and efficiency of integrated excavation and mining operations
Abstract
The complex environment of comprehensive coal mine excavation and mining operations exposes workers to prolonged high-intensity physical labor, resulting in joint shear overload, muscle fatigue accumulation, and significant equipment vibration, which threaten both operational safety and efficiency. This study applies biomechanical analysis to measure joint force, muscle fatigue, and vibration exposure under different operation modes and implements optimized ergonomic designs. Experimental results show that the optimized operation mode reduces joint shear force by an average of 22.2%, with a 24% reduction during integrated excavator operations. Muscle fatigue indices for the erector spinae and quadriceps decreased by 30%, while upper limb muscle fatigue dropped by 29%. Vibration exposure was reduced by an average of 35%, and operational efficiency improved by up to 23%. These findings demonstrate the significant engineering value of biomechanical optimisation in improving safety, reducing occupational injury risk, and enhancing efficiency in coal mine operations.
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