首先应用比值判别法和“三带”判别法确定煤层群采用下行开采,然后通过理论分析得出回采巷道应采用外错式布置并计算出相应外错距,借助数值模拟软件模拟了该种情况下巷道围岩应力分布特征、屈服破坏特征以及围岩移近量,最后提出了11#煤层回采巷道支护方式。 Firstly, the method of ratio judgment and “three-band ” discriminant method is used to determine the coal seam group to adopt the downcut mining method. Then the theoretical analysis shows that the outlying pattern should be adopted and the corresponding outset error should be calculated. Numerical simulation software According to the stress distribution characteristics, yielding failure characteristics and the surrounding rock displacement of the roadway, the way of roadway support in 11 # coal seam is put forward finally.