一、前言光弹性模型“冻结”法是工程结构实验应力分析中较为有效的方法之一。目前,这种方法已广泛应用于机械、水工建筑、交通运输和采矿工程等各项技术中。激光全息摄影的出现,为光弹实验技术的发展开拓了新的前景。全息光弹实验技术可以用来确定围岩初始破裂区,研究开裂时的缝端应力,并能直接分离主应 I. Preface The photoelastic model “freezing” method is one of the more effective methods in the experimental stress analysis of engineering structures. At present, this method has been widely used in machinery, hydraulic construction, transportation and mining engineering and other technologies. The emergence of laser holography has opened up new prospects for the development of photoelastic experiment technology. The holographic photoelastic experiment technique can be used to determine the initial rupture zone of surrounding rock, study the crack tip stress at cracking, and can directly separate the main reaction