Evaluation of TBM tunneling efficiency based on a new rock brittleness index considering energy conversion

Key Points

• Tbm tunneling efficiency improves by incorporating a new rock brittleness index, leading to optimized processes.
• The analysis shows energy conversion directly affects tunneling performance, highlighting key mechanical properties.
• Evaluative analysis of tunneling data emphasizes the role of rock brittleness in excavation outcomes and energy efficiency.
• The findings may enable more efficient tunneling techniques, particularly in varying geological conditions.