目前测定粘土矿物颗粒定向度的方法很多,主要有扫描电子显微镜、x-射线衍射仪和偏光显微镜定向度测试仪三种。前两种手段虽都有某些明显的优点,但一般试验室多不具备这些设备,且它们也各存在某些不足。偏光显微镜定向度测试仪所用的偏光显微镜是一般试验室都能具备,用它来量测定向度较用电子显微境简单,而且还能量测剪切面的定向度。因 At present, there are many methods to determine the degree of orientation of clay minerals, including scanning electron microscope, x-ray diffractometer and polarization microscope orientation tester. Although the first two methods have some obvious advantages, most laboratory equipments do not have these equipments, and they also have some deficiencies. The polarizing microscope used in polarizing microscope orientation tester is available in the general laboratory. It is simpler to use it to measure the orientation than to use the electron microscopic environment, and it also measures the orientation degree of the shear plane by energy. because