Abstract：With a newly developed numerical code，Rock Failure Process Analysis (RFPA2D)，as well as numerical code FLAC2D，some numerical simulations of deformation and mechanical behaviors are made for a two-dimensional tunneling in the No.2 line tunnel of Guangzhou highway. By using the RFPA2D code，the model materials are considered as brittle and heterogeneous. The modified models of Mohr-Coulomb and tension cut-off are taken as the element failure criterion. Pile-base deformation and ground movement are inevitably caused by tunnelling construction in soil and rock ground. In urban areas，the potential effects on building are of great importance in the construction of tunnels by means of different excavating types. It is shown that the RFPA2D code is very promising to be used as a tool to study the ground movement and its failure mechanism.
