Assumed subway station constructed with hole-pile method is taken as engineering background.The subway station is simulated to be excavated both in span and in full face.Finite element software is adopted to establish the numerical models and to simulate the construction processes of the subway station constructed with hole-pile method excavated in span and full face

then comparison charts of surface settlement

lateral horizontal displacement of piles

floor uplift are obtained by computation.The result shows that excavation in full face is superior to excavation in span in controlling displacement.The influence mechanism can be deeply understood through the research.The conclusion can provide valuable reference for similar projects.