密实核与压剪破坏影响下TBM盘形滚刀寿命预测

doi:10.13229/j.cnki.jdxbgxb.20250042

摘要/Abstract

摘要：

为准确预测全断面隧道掘进机破岩过程中滚刀使用寿命以提升掘进效率及确定换刀时间，本文通过分析盘形滚刀破岩机理，基于剪切和张拉破坏机理，建立了TBM破岩滚刀法向力计算模型，并基于密实核效应改进Rabinowicz磨粒磨损模型，建立了密实核效应和压剪破坏影响下TBM盘形滚刀磨损速率及寿命预测模型，通过与已有方法、数值模拟和现场监测等结果对比分析，验证了本文预测模型的工程适用性。结果表明：本文模型的预测值更接近工程现场的实测值，且相比现有典型模型，在滚刀磨损速率和滚刀寿命的平均预测精度上分别提升9.1%、11.7%，有效表明了TBM滚刀破岩计算时综合考虑密实核效应与压剪破坏模式的必要性，可将滚刀磨损速率和寿命指数作为评价TBM破岩过程中滚刀磨损特性的可靠指标，为TBM隧道及其类似工程现场换刀方案设计和时机选择提供理论指导。

关键词: 全断面隧道掘进机, 破岩, 使用寿命, 盘形滚刀, 密实核效应, 压剪破坏模式

Abstract:

In order to accurately predict the service life of the hob in the rock-breaking process of Tunnel Boring Machine（TBM） to improve the boring efficiency and determine the time of changing the hob， this study analyzed the rock-breaking mechanism of the disk hob and established the calculation model of the normal force of rock-breaking hob of TBM based on the shear and tensile failure mechanism. The Rabinowicz abrasive wear model was improved based on the dense core effect to establish the wear rate and life prediction model of TBM disc cutters considering dense core effect and compression-shear failure mode. The engineering applicability of the prediction model proposed in this study was verified by the comparing the prediction results with the existing theoretical model calculation results， numerical simulation results and on-site monitoring results. The results show that the predicted values of this model are closer to the measured values in the engineering field. Compared with the existing theoretical model， the average prediction accuracies of cutter wear rate and cutter life are improved by 9.1% and 11.7% respectively， which effectively demonstrates the necessity of comprehensively considering the dense core effect and compression-shear failure mode in the calculation of TBM cutters breaking rock. The cutter wear rate and life index can be used as reliable indexes for evaluating the cutter wear characteristics during the rock breaking process of TBM， which can provide theoretical guidance for the design and timing of cutters change program in TBM tunnel and other similar projects.

Key words: tunnel boring machine, rock-breaking, service life, disc cutter, dense core effect, compression-shear failure mode

中图分类号:

U455

王超,邹金锋,李亮,舒丹. 密实核与压剪破坏影响下TBM盘形滚刀寿命预测[J]. 吉林大学学报(工学版), 2026, 56(8): 2162-2176.

Chao WANG,Jin-feng ZOU,Liang LI,Dan SHU. Life prediction of TBM disc cutters considering dense core effect and compression⁃shear failure mode[J]. Journal of Jilin University(Engineering and Technology Edition), 2026, 56(8): 2162-2176.

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参数	数值	参数	数值
整机功率/kW	1 726.22	中心滚刀数量/把	8
刀盘转速/（r·min^-1）	2.2	正面滚刀数量/把	31
扭矩/（kN·m）	2 500	边缘滚刀数量/把	14
盾构推力/kN	12 000	滚刀直径/mm	432
掘进速度/（mm·min^-1）	15	刀刃宽度/mm	17
刀盘开口率/%	32	滚刀刃角/（°）	20
刀盘压力/MPa	8.0	刀圈硬度/HRC	55
刀盘额定功率/kW	945	推进油缸总推进力/t	4 086
最大贯入度 /mm	≥10	开挖直径/mm	6 420

地层	天然重度/（kN·m^-3）	黏聚力/kPa	内摩擦角/（°）	压缩模量/MPa	泊松比
素填土	17.8	2	18	-	-
粉质黏土	17.6	35	26	30	0.32
中砂	18.2	0	36	42	0.22
砾砂	22.5	0	42	56	0.18
微风化花岗岩	26.5	18 300	42.5	100	0.25