全断面掘进机工作时的运动主要由推进液压缸推动机身的前进运动和旋转电机带动刀盘的转动组成。掘进机推进液压缸的推压力是确定掘进机推进液压缸缸数和液压缸大小的主要设计参数，也是确定掘进机工作中推进力大小的依据。本文对常用的液压缸推压力公式作了修正。 Full-face boring machine work mainly by the movement of the hydraulic cylinder to promote the forward movement of the fuselage and rotary motor driven cutter plate rotation composition. Boring machine to promote the hydraulic cylinder pressure is to determine the number of hydraulic propulsion machine cylinder and cylinder size of the main design parameters, but also determine the work of boring machine propulsion force based on the size. In this paper, the commonly used hydraulic cylinder pressure formula was amended.