This paper establishes probability models of attitude size. density and openness of discontinuities of rock mass by measuring geometric parameters of discontinuities on rock mass outcrops and drift walls.

• 本文通过对边坡区岩体露头和平硐壁结构面几何参数的量测统计，建立了岩体结构面产状、规模、密度和张开度的概率模型。