Estimations of the morphological characteristics of fracture surface in rocks include the stereological estimation, the vertical section method, the method of the isotropic uniform random line, the method of the angular distribution, the method of the colatitude distribution and so on. 岩体裂隙面形态特征评价方法有立体评价法、垂直剖面法、迷向均匀随机线法、角分布法、余纬度分布法等。