基于UDEC模拟沿空掘巷合理煤柱宽度的确定

oal pillar width is fully mechanized caving mining along the empty roadway layout system, the most important coal pillar width of the roadway surrounding rock of stability is reflected in two aspects: First, determine the width of coal pillars along the empty roadway layout position, and thus determines the overall roadway along the empty state of stress; second pillar width affects the stability of coal pillar roadway and thus directly affect the overall stability of the roadway. In this paper, discrete element numerical calculation program UDEC3.0, simulation analysis of different widths roadway coal pillar conditions, the stress distribution of roadway surrounding rock and mineral characteristics of pressure appeared to arrive at a reasonable coal pillar width.