Disc cutter wear is a crucial problem that influences the working efficiency and security of hard rock tunnel-boring machines (TBMs). When tunneling and rock breaking with TBM, the cutters at the forefront of the cutter head directly contact the tunnel face, where wear is serious due to a harsh working environment. In this study, the Cerchar abrasivity index (CAI) of various rock samples was obtained by using the ATA-IGG I rock abrasion servo system. Additionally, a series of small-size cutter wear experiments were carried out on an SP3-I composite abrasion test platform, and the fitting relationship between cutter wear and rock abrasion value was obtained. A cutter wear prediction method was established by measuring the cutter wear and rock CAI of the project built section and the rock CAI of the project unbuilt section. Based on the experimental results, the effects of different tunneling parameters (penetration speed, rolling speed) and tip width on cutter wear were analyzed. In the study of cutter wear, attention should be paid to the influence of load, vibration and temperature on the cutter wear removal mechanism. It is suggested that wide-tip and narrow-tip cutters should be arranged alternately on a TBM cutter head to give full play to the lateral rock crack ability developed by the wide-tip cutter and the radial rock crack ability developed by the narrow-tip cutter, so as to reduce wear on the cutter and improve the efficiency of TBM rock breaking. The results of this research provide a reference for optimization design and performance selection of a TBM cutter ring and cutter head.

圆盘刀具磨损是影响硬岩隧道掘进机（TBM）工作效率和安全的关键问题。TBM掘进破岩时，刀盘前端的刀具直接接触掌子面，工作环境恶劣，磨损严重。本研究利用ATA-IGG I岩石磨损伺服系统获得了各种岩石样品的Cerchar磨损指数（CAI）。此外，在SP3-I复合磨损试验平台上进行了一系列小尺寸刀具磨损试验，得到了刀具磨损与岩石磨损值的拟合关系。通过测量工程建成段和未建段岩石CAI的刀具磨损和岩石CAI，建立了刀具磨损预测方法。根据试验结果，分析了不同掘进参数（贯入速度、轧制速度）和刀尖宽度对刀具磨损的影响。在研究刀具磨损时，应注意载荷、振动和温度对刀具磨损去除机制的影响。建议在TBM刀盘上交替布置宽刃和窄刃刀具，以充分发挥宽刃刀具产生的横向岩石开裂能力和窄尖端产生的径向岩石开裂能力。刀具，从而减少刀具磨损，提高TBM破岩效率。研究结果为TBM刀环和刀盘的优化设计和性能选择提供了参考。轧制速度）和刀尖宽度对刀具磨损的影响进行了分析。在研究刀具磨损时，应注意载荷、振动和温度对刀具磨损去除机制的影响。建议在TBM刀盘上交替布置宽刃和窄刃刀具，以充分发挥宽刃刀具产生的横向岩石开裂能力和窄尖端产生的径向岩石开裂能力。刀具，从而减少刀具磨损，提高TBM破岩效率。研究结果为TBM刀环和刀盘的优化设计和性能选择提供了参考。轧制速度）和刀尖宽度对刀具磨损的影响进行了分析。在研究刀具磨损时，应注意载荷、振动和温度对刀具磨损去除机制的影响。建议在TBM刀盘上交替布置宽刃和窄刃刀具，以充分发挥宽刃刀具产生的横向岩石开裂能力和窄尖端产生的径向岩石开裂能力。刀具，从而减少刀具磨损，提高TBM破岩效率。研究结果为TBM刀环和刀盘的优化设计和性能选择提供了参考。振动和温度对刀具磨损去除机制的影响。建议在TBM刀盘上交替布置宽刃和窄刃刀具，以充分发挥宽刃刀具产生的横向岩石开裂能力和窄尖端产生的径向岩石开裂能力。刀具，从而减少刀具磨损，提高TBM破岩效率。研究结果为TBM刀环和刀盘的优化设计和性能选择提供了参考。振动和温度对刀具磨损去除机制的影响。建议在TBM刀盘上交替布置宽刃和窄刃刀具，以充分发挥宽刃刀具产生的横向岩石开裂能力和窄尖端产生的径向岩石开裂能力。刀具，从而减少刀具磨损，提高TBM破岩效率。研究结果为TBM刀环和刀盘的优化设计和性能选择提供了参考。从而减少刀具磨损，提高TBM破岩效率。研究结果为TBM刀环和刀盘的优化设计和性能选择提供了参考。从而减少刀具磨损，提高TBM破岩效率。研究结果为TBM刀环和刀盘的优化设计和性能选择提供了参考。