盘形滚刀磨损是制约TBM掘进效率和施工成本的重要因素。为研究滚刀滑动对滚刀磨损的影响，提出了“一次侵入位移”的概念，应用质点的运动合成原理推导出了考虑滚刀刀刃宽度影响的一次侵入位移及滚刀滑动距离的计算公式，研究一次侵入位移的影响因素以及滚刀磨损与滑动距离的关系，基于上述研究分析秦岭隧道TB880E型TBM滚刀滑动磨损系数分布规律。研究表明： 1）滚刀破岩过程中，刀刃相对开挖面岩石除滚动外，还产生相对滑动； 2）中心区域滚刀侧向位移分量最大，滚刀磨损以剪切破岩和滑动磨损为主，中心区域以外滚刀沿掘进方向位移分量最大，滚刀磨损以碾压破岩和滚动磨损为主； 3）应进一步综合考虑滚刀破岩量、滑动距离以及二次磨损等因素对滚刀磨损的影响。

The abrasion of disc cutter is the main factor which restricts the efficiency of TBM tunneling and cost of the construction. The concept of onetime penetration displacement is proposed; and then the calculation formula for onetime penetration displacement considering mass point motion synthesizing principle and the calculation formula for disc cutter slipping distance are deduced; meanwhile the influencing factors and variation rules of onetime penetration displacement and the relationship between disc cutter abrasion and disc cutter slipping distance are studied. Finally, the distribution laws of abrasion coefficient of disc cutter of TB880E TBM used in Qinling Tunnel is analyzed. The study results show that: 1) Relative slipping of disc cutter also exists when disc cutter cutting the rock. 2) The lateral displacement of center cutters is the maximum and the abrasion are mainly about shearing breaking and slipping; the displacement, along TBM boring direction, of cutters out of center is the maximum and the abrasion are mainly about crushing rock breaking and rolling. 3) The influence of rock breaking amount, slipping distance and secondary abrasion on disc cutter abrasion should be further considered.