结合金家庄煤矿具体地质条件,通过数值模拟和现场实践的方法,研究了3^#煤层3条下山掘进顺序对巷道围岩变形量的影响,得出了下山的合理掘进顺序,同时也研究了在不同煤柱宽度的条件下,1235工作面对所掘进巷道的采动影响程度,从而确定了合理的煤柱宽度,为矿井的安全高效回采提供了依据。
Based on the geologic setting of Jin Jiazhuang coal mine, the influence of tunneling sequence in 3 coal seam on the amount of roadway deformation is studied by numerical simulation and practice on the spot, and rational sequence is ascertained. The influence of 1235 workface on tunneling roadway is studied on condition of different coal pillar width, and rational width of the coal pillar is ascertained, which can be reference of safety and effective coal winning.