From the perspectives of reducing displacements of dry dock walls during the process of pit excavation
and controlling the seepage of dock walls in the course of using
the application of techniques of soil nailing wall and composite soil nailing wall widely used in deep excavation
the construction of dry dock by using numerical simulation are explored emphatically. FLAC is one of methods of numerical simulation
which is widelyused in rock-soil engineering field. The FLAC is used to simulate the working condition of soil nailing wall in pit excavation of dock chamber; and the application of stiffened cement soil mixing pile(SMW) prestressed anchor plus soil nail structure to dock walls is studied. According to the simulation results
some sconclusions at the construction of dry dock walls are drawn.