中文摘要：

为了确定南梁矿合理的区段煤柱尺寸,在相似模拟实验原理的基础上,设计了区段煤柱不同尺寸的平面模型和立体模型并进行煤柱的稳定性研究.平面模型模拟实验表明,在采高2 m、埋深100 m左右的情况下,宽10 m 的煤柱能保持一定稳定性,宽12 m 的煤柱在顶板垮落时基本能保持稳定;准立体模型架中对煤柱稳定性评价实验表明,在宽12 m 的区段煤柱两侧工作面都垮落时,煤柱上应力可能超过煤柱长时强度而失稳.综合分析南梁矿的地形地貌和煤柱的稳定性,确定该矿区段煤柱合理尺寸应为14 m,与原宽20 m 的区段煤柱相比,煤柱尺寸减小了30%,提高了煤炭资源回采率.

英文摘要：

In order to determine a reasonable section coal pillar size in Nanliang Mine, the planar and spatial models in different section coal pillar sizes were designed and stability of the section coal pillar was studied on the basis of the simulation experiments. The simulation experiments with the planar model indicated that under the conditions of coal seam with 2 m mining height and 100 m burying depth, a 10 m-wide coal pillar can keep stable and a 12 m-wide coal pillar can basically keep stable while roof caving;the stability evaluation experiments of the coal pillar with quasi spatial model frame showed that when the working faces on the two sides of a 12 m-wide section coal pillar all caved, the stress of the coal pillar might exceed its strength, which would cause the coal pillar to lose stability. Based on a comprehensive analysis of the topography of Nanliang Mine and the stability of the coal pillars, the reasonable size of the section coal pillar should be 14 m, and compared with the original 20 m-wide pillar, its size reduced by 30%, which greatly improved the recovery rate of coal resources.