It is first confirmed in theory that two dimensional distribution of Joint trace revealed in an outcrop plane (2D) or in a hole (1D) does not represent three dimensional (3D) distribution of discontinuity with limited size in real rock masses.

• 从理论上证明了节理岩体内有限大小的结构面实质上是呈三维分布的,岩体出露面上结构面出露迹线的分布一般不能代表三维岩体中结构面的分面特征。