Research on Breaking Energy Mechanism of Tunnel Boring Machine Disc Cutter Rock with CSM Model

Abstract:

Full face rock tunnel boring machine in construction process, disc cutter put pressure on rock breaking, actually belongs to the process of energy transfer, from the point of view of energy analysis the energy transfer rules in the process of disc cutter rock breaking, based on CSM force prediction model, analysis disc cutter energy input and rock mass energy output efficiency ratio, for excavation with minimum energy efficiency. Taking S-536 Hong Kong water tunnel TBM as an example, When the penetration is 10mm, based on the energy efficiency ratio the optimal disc cutter spacing should be less than 70mm, than the actual average disc cutter spacing is small 2mm, rock mass as a reference the disc cutter rock breaking efficiency mechanism provides certain reference value for the cutter layout.

• Periodical: Applied Mechanics and Materials (Volumes 651-653)
• Pages: 988-991
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.651-653.988
• Online since: September 2014
• Authors: Nan Zhao*, Li Wei Song
• Keywords: CSM Prediction Model, Energy Dissipation, Energy Efficiency Ratio, Energy Transfer

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