The main contents of this paper can be summarized as follows:(1) Study of the factors and building of a mechanic model of the cutterhead torque on considering the features of EPB cutterhead.

• 针对土压平衡式盾构机刀盘的特点,深入地分析了压力舱内刀盘扭矩,推导了土压平衡式盾构机刀盘扭矩各主要组成部分的计算公式,建立了盾构机刀盘扭矩的力学模型;