Abstract: Whether the parameters used in the study of the mechanical structures and grouting parts of the test platform can be scaled or not is analyzed, with the help of the dimensional analysis method and by means of similar criteria and similar constant. The similarity of the test platform is described. Simulation is made to check the rationality of the parameters. The design method for the test platform of the simultaneous grouting system of shield is verified, by similarity theory and simulation analysis, to be rational. The paper can be used as the theoretical basis for the study on the test platform of the simultaneous grouting system of shield. 

Key words: shield, dimensional analysis, simultaneous grouting, test platform, similarity theory