<p>In underground mines operating at greater depths (&gt; 300&#xa0;m), the spalling of coal from the longwall face is a major concern. The risk of worker injury, damage to face equipment, formation of roof cavities, and obstruction of the armoured face conveyor at the longwall face are only a few of the issues caused by coal wall spalling. Therefore, the purpose of this study is to evaluate the contribution and effect of various factor that influence the occurrence of coal wall spalling during the longwall panel’s main weighing period. First, a calibrated numerical modeling methodology has been developed to achieve the aim by utilizing FLAC^3D software and the geological information of panel 1 of the Adriyala longwall project mine, India. Subsequently, the calibrated methodology was exploited for the parametric study of thirteen critical parameters that govern the coal wall spalling. The study’s findings include quantifying the impact and role of all thirteen parameters under study. The results indicated four out of thirteen factors: the working depth, compressive strength of the coal seam, deformation modulus of the coal seam, and the compressive strength of the immediate roof influence the coal wall spalling markedly. Suitable strategies for mitigating face instability conditions arising due to the role of different parameters are discussed in the paper. The findings of this study will assist engineers in understanding better the fundamental geomechanics of coal wall spalling, identifying critical parameters, face instability risks, managing the structural stability of the coal wall, and imparting safety during the main weighting period.</p>