斯肯普顿曾认为,由于粘土中定向性的发展,粘土在受到大的剪切变形时,抗剪强度会降低。摩根斯顿和恰连科利用偏光显微镜研究了滑坡剪切区内的结构定向性,他们观察到的剪切区厚度从不足1毫米到几个厘米,剪切区内有一定的定向性,并且剪切区往往以主位移剪切面为界限。剪面厚约10O到100微米。 Skepton once considered that due to the directional development in clay, the shear strength of clay decreases when subjected to large shear deformations. Morgenstern and Ciarenko use polarized light microscopy to study the structural orientation within the landslide shear zone where they observed a shear zone thickness of less than 1 millimeter to a few centimeters and a definite orientation within the shear zone and Shear zones are often limited by the main displacement shear plane. Cut the thickness of about 10O to 100 microns.