Surveying the effect of technological and technical parameters on surface settlement when tunnelling in soil by box jacking technique

Abstract

When tunneling by box jacking technique, it will cause surface settlement on the surface. One of the factors affecting surface settlement is technological and technical parameters such as jacking force, geometrical dimensions, and tunneling depth. The paper studies the influence of the above parameters on the surface settlement by finite element method (Plaxis 3D Tunnel software). From the survey results, it is possible to make an assessment of the influence of each survey parameter on the surface settlement as well as to make recommendations to ensure the safety of the tunnel construction process and the works on the ground surface.

Keywords: jacking force, tunnel, surface settlement, settlement troughs, tunneling depth, geometrical dimensions, FEM, Plaxis 3D Tunnel.