通过对平煤集团大量的锚喷巷道的回归分析 ,建立了巷道壁面绝对粗糙度和巷道断面积对摩擦阻力系数影响程度的回归方程 ,并对回归方程作了显著性检验 ,最后对巷道粗糙程度和断面积对锚喷巷道摩擦阻力系数的影响程度进行了讨论和总结 ,对同类巷道摩擦阻力系数的选取具有实践指导意义。 Through the regression analysis of a large number of anchor spray lanes in Pingmei Group, the regression equations of the absolute roughness of the roadway walls and the influence of the cross-sectional area of ​​the roadway on the frictional resistance coefficient were established, and the regression equation was significantly tested. Finally, the roughness of the roadway And the influence of cross-sectional area on the coefficient of friction and drag of shotcrete and shotcrete are discussed and summarized. It is practical and instructive to choose the coefficient of frictional drag of similar roadway.