Reinforced soil structures are one of the most usual means of passive defense in the                     protection of personnel and property from accidental explosion of stored explosives and terrorist bomb attacks.  Reinforced Soil (RS) walls are good blast energy-absorbing structures due to                   inherent properties of the backfill soil materials. In this study, in addition to general comparison of different kinds of reinforced soil walls, numerical modelling has been done for walls with     different distance from the explosion. Blast induced pressures amplitudes have been evaluated through nonlinear dynamic analysis and results have been compared with full-scale blast trials. One of the key findings of this study is investigating the reason of different response of walls in close range blasts and far field blast. Walls showed a localized failure mechanism occurred in close range blasts in contrast to general behavior in far field blasts.