<p>The present study examines the effectiveness of stone columns in mitigating earthquake-induced liquefaction in gently sloping ground underlain by layered deposits of clean sand, using finite element analysis. A numerical model was developed, consisting of two symmetric slopes separated by an open channel, with stone columns installed beneath the gently inclined ground surface. A detailed parametric analysis examined the influence of critical design variables, including the number of columns per side, stone column diameter, and stone column spacing. Key response parameters, vertical settlement, lateral displacement, and excess pore pressure ratio, were evaluated to quantify performance improvements. Moreover, the shear stress reduction factor was evaluated to quantify the efficiency of stone column in liquefaction mitigation. The parametric study was extended to assess the deformation behavior of gently sloping ground under various real seismic loading conditions. The results show that, for a constant spacing-to-diameter ratio, increasing the column diameter significantly decreases excess pore pressure ratios, thereby improving liquefaction resistance. The use of stone columns of 2.0&#xa0;m diameter led to a 84.2% reduction in vertical displacement. Time-history analyses of excess pore pressure further revealed that stone columns play a crucial role in enhancing post-liquefaction reconsolidation performance.</p>