The Research of Backfill Grouting Pressure in Shield Tunneling

As to shield tunneling, that soil is reinforced into the void is one of the most important reasons which cause the ground settlement, and always most important factor in the tunnel construction and the relative research. The numerical simulation studies presented in this paper focus on the different grouting pressure causing different ground settlement, plastic area and stress growth behavior. Based on the simulation results and the engineering ground settlement limit, propose reasonable synchronous slurry injection pressure and the relative method of controlling ground settlement. Propose reasonable suggestion for the determination of grouting pressure during shield construction.