古应力场的研究是当今构造地质学和石油构造地质学的研究热点。作用在岩石或地层中的应力可以导致其不同样式和特性的变形 ,并且驱动油气的运移和成藏。从地质体中直接获得古应力场各项参数相当困难。将光弹物理模拟实验方法应用于古应力场研究中 ,介绍了光弹物理模拟实验的装置、材料、边界条件和相似理论 ,给出了实验结果。对该实验结果进行了物理学和动力学分析 ,结果表明 :①最大主应力σ1作用方向和强度控制着非均匀介质中应力集中区和高势能区的分布 ;②应力轨迹描述了应力传递方向与油气运移方向之间的几何关系 ;③应力级值区图对于确定低势能区和预测有利成藏区是非常重要的 The study of paleotemperature field is a hot topic in tectonic geology and petroleum tectonics. Stress acting in rocks or formations can lead to the deformation of their different styles and characteristics and drive the migration and accumulation of hydrocarbons. Obtaining the parameters of paleotemperature field directly from geological body is quite difficult. The photoelastic physical simulation experiment method is applied to the paleotemperature field research. The device, material, boundary conditions and similar theory of photoelastic physical simulation experiment are introduced, and the experimental results are given. The results of the experiment are analyzed by physics and dynamics. The results show that: (1) the direction and intensity of the maximum principal stress σ1 control the distribution of stress concentration zone and high potential energy region in inhomogeneous medium; (2) the stress trajectory describes the stress transfer direction and The geometric relationship between the direction of hydrocarbon migration; ③The stress level map is very important for the determination of low potential energy zone and prediction of favorable reservoir formation