The filter cake on excavation face would be destructed periodically by cutting tools during slurry shield tunneling. The broken filter cake has a risk for face stability. The influence of cutting tools on filter cake was studied in this paper. A slurry-soil interaction model based on a multiphase flow theory which considers the solid particles and fluid in slurry was developed. The whole process of slurry penetration and filter cake formation on the excavation face of slurry shield can be described by this model. The motion state of cutting tools can be combined with this model and the effect of cutting tools on the slurry-soil interaction and pressure transfer mechanism was analyzed. Subsequently, the comparative calculations were presented to discuss the influence of tunneling parameters and the design of cutting wheel on filter cake formation during slurry shield tunnelling. The results indicate that the total area of filter cake on excavation face increases with the decreasing of revolutions per minute of cutting wheel and shield machine advance rate. The area ratio of filter cake on the center of excavation face always larger than other zone due to the lesser amount of cutting tools within one track in the center of cutting wheel. The results can provide a better understanding of how to set the shield tunneling parameters and design the layout of cutting tools for the stability of tunnel face.

在泥浆盾构掘进过程中，开挖面的滤饼会被切削工具定期破坏。破碎的滤饼有面部稳定的风险。研究了切削刀具对滤饼的影响。建立了基于多相流理论的浆液相互作用模型，该模型考虑了浆液中的固体颗粒和流体。用该模型可以描述泥浆盾构开挖面上泥浆渗透和滤饼形成的全过程。可以将刀具的运动状态与该模型结合起来，分析了刀具对泥浆-土壤相互作用和压力传递机理的影响。随后，通过对比计算，讨论了盾构隧道掘进参数和截割轮设计对滤饼形成的影响。结果表明，开挖面的滤饼总面积随着切割轮每分钟转数的减小和盾构机前进速度的增加而增加。开挖面中心处的滤饼面积比总是大于其他区域，这是因为切轮中心处的一个轨道内的切削工具数量较少。结果可以更好地理解如何设置盾构隧道参数和设计切削工具的布局，以确保隧道工作面的稳定性。结果表明，开挖面滤饼的总面积随着切割轮每分钟转数的减小和盾构机前进速度的增加而增加。开挖面中心处的滤饼面积比总是大于其他区域，这是因为切轮中心处的一个轨道内的切削工具数量较少。结果可以更好地理解如何设置盾构隧道参数和设计切削工具的布局，以确保隧道工作面的稳定性。结果表明，开挖面的滤饼总面积随着切割轮每分钟转数的减小和盾构机前进速度的增加而增加。开挖面中心处的滤饼面积比总是大于其他区域，这是因为切轮中心处的一个轨道内的切削工具数量较少。结果可以更好地理解如何设置盾构隧道参数和设计切削工具的布局，以确保隧道工作面的稳定性。