Abstract
As the main rock-breaking tool of the tunnel boring machine, wear of the disc cutter is affected by geological conditions, equipment factors, and tunneling parameters when it interacts with rock. Because of the complex factors affecting disc cutter wear, it is difficult to accurately predict the wear of the disc cutter. In this study, the rock-breaking mechanism and the force of the disc cutter were analyzed, and a theoretical prediction model of disc cutter wear was established based on the friction work principle. The parameters in the disc cutter wear prediction model were determined by simulation, and a prediction method of disc cutter wear is proposed. Finally, the wear prediction model of the disc cutter was verified by field wear data. The results show that the average error between the predicted value of the disc cutter and the actual wear data from the field is 16.1%. The wear prediction model of the disc cutter has high accuracy and adaptability. The research results provide an effective method for wear prediction of the disc cutter, which is of great significance and engineering value for cutter replacement and construction management.
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