Abstract: The concept of the traditional virtual prototype of shield machine is enlarged by connecting the digital prototype with the virtual reality, so as to develop the virtual reality system of shield machine and boring. The virtual reality system developed has such functions as virtual assembly, movement simulation and visualized simulation of working procedure and scalars and vectors. The virtual reality system developed is helpful to the study and training in the shield tunneling technology.

Key words: shield, virtual reality, program, software developing, roam, humancomputer interaction