Abstract：The asymmetric deformation characteristics of surrounding rock after excavating and supporting of deep roadway within inclined rock strata，its failure mechanism and coupling control countermeasure are investigated by numerical simulations. Some typical applications of engineering cases are also presented. It is indicated that the deformation failure is significantly influenced by a key position of obtuse angle between roadway sections and incline directions of rock strata. Its failure mechanism can be explained by the discrepancy of deformation between interlayer shearing slip and high-stress squeezing，which is induced by the asymmetric structure of rock masses. For reducing the effect of asymmetric deformation，the asymmetric coupling control countermeasure is put forward based on the research result，which means that the key position of surrounding rock that may produce deformation discrepancy should be reinforced by anchor cable and floor bolt after bolt-net- anchor coupling support. Through numerical simulations and engineering applications，it is demonstrated that the strategy of asymmetric coupling support can definitely decrease the discrepancy deformation at the key position of surrounding rock and effectively enhance the stability of roadway surrounding rock masses.
