The field behaviour of a soft foundation with stone columns reinforcement at a coal and ore stockyard was detailed in this research, and the results were compared using numerical analysis. Along a 500-operational day period, the performance of a 130 m wide segment with two ore stacks was documented. An elaborate instrumentation system with 14 sensors was employed to track the stabilised area's serviceability behaviour. Using the PLAXIS 2D finite element code, a complementary numerical analysis was carried out in order to properly represent the increase in lateral earth pressure brought on by the placement of columns. The stone columns were transformed into comparable walls for the sake of the numerical analysis, which was conducted using a plane strain technique. The proposed plane strain model was able to accurately forecast the overall deformations of the reinforced foundation, according to the results. The behaviour of the simulated excess pore pressure curves was likewise consistent with the field data, with a peak value at the time of loading application and a slow decline during the consolidation phases.