Research on the Distribution Model of the Slurry Pressure in the Shield Tunnel

Abstract

This paper focuses on the distribution model of the slurry pressure in the shield tunnel when grouting simultaneously. The theoretical derivation of the slurry pressure distribution model is carried out respectively according with Bingham flow model. The theoretical formula of the slurry pressure in the cross section of the shield tail is established. The relationship between slurry viscosity coefficient and the time and the relationship between the slurry pressure and slurry viscosity coefficient are analyzed. On this basis, the law that the slurry pressure changes with time and the distribution of the slurry pressure along the longitudinal direction of the tunnel are summarized. Furthermore, monitoring on the spot proved the rationality of the above theoretical derivation. The results of this paper can provide great reference and guiding significance for the simultaneous grouting of the shield tunnel.