According to the factors of shear strength of rock discontinuities, the particularity of surface shape of rock discontinuities in Daxiling Tunnel is analyzed and the shear strength of rockdiscontinuities by Barton-Bandis model is discussed in detail.

• 从岩体结构面抗剪强度的影响因素入手，根据大溪邻隧道围岩结构面表面形态的具体特点，运用Barton－Bandis模型讨论了大溪岭隧道围岩结构面的抗剪强度。