A STUDY OF POSTURE CHANGE PREDICTION OF MULTI-SHIELD TUNNELING MACHINE

Abstract

In order to control the behavior of multi-faced shield tunneling machine, it is of great importance to estimate accurately the movement of the machine during the excavation. An estimation model for posture change was proposed based on the equilibrium of force and moment acted against the shield tunnelling machine. Two series of shield excavation tests were carried out on site; one for determining parameters of the model, and the other for verifying the model by comparing the prediction value from the model with the test one. As a result, it was certified that the proposed model could give reasonable posture change estimation.