近距离煤层上层煤条带煤柱垂直应力数值模拟研究

摘要

条带作为一种特殊开采方式，在对压煤进行回收作业的矿区常被使用，但是其煤柱的宽度与回采宽度的留设对地面有直接影响，一直是研究重点。文章以某矿近距离两煤层为研究对象，对上覆煤层条采煤柱宽度的留设进行 UDEC 数值模拟研究，确定煤柱宽度的留设在垂直方向上的应力影响，从而确定煤柱的留设是否合理，结果表明，结合该矿现场地质条件，确定采40 m，留设30 m 煤柱比较合理。%Strip mining as a special way,in the coal mining area is often used for recycling operations,but the width of coal pillar and mining width design has a direct influence on the ground,has been a research focus. Articles to close two a mine coal seam as the re﹣search object,the overlying coal seam of coal pillar width on state of numerical simulations of the design,research,determine the width of coal pillar left in the vertical direction stress effect,to determine whether the design of coal pillar is reasonable,the results showed that the combined with the mine site geological conditions,determine the 40 m,30 m more reasonable coal pillar design.