Abstract
Progressive deepening of coal extraction has directed attention to the objective transmission of floor stresses beneath inclined remnant pillars. Physical analogue experiments, three-dimensional finite-difference analyses (FLAC(3D)) and a semi-space elastic solution were jointly employed to quantify stress redistribution after panel extraction. The results reveal a bilateral arch-shaped failure zone within the roof strata and identify two characteristic floor-stress patterns that are governed by seam dip. For inclinations of 15-30°, near-floor stress exhibits quadratic decay from approximately 70 MPa to 25-30 MPa; for dips of 30-60° the decay is effectively linear, declining from 45 to 50 MPa to 15-20 MPa. The compiled data furnish a quantitative framework for panel layout and laminated-roof control in deep inclined seams.