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为了研究一个地区地质构造的空间分布规律和在时间上的发展演化,近三十年来,人们一直重视构造应力场的恢复工作。其中,利用赤平极射投影方法定性地分析构造应力场,被认为是一种行之有效的手段。这种方法根据小构造研究中获得的共轭剪节理数据,绘制各观察点的应力轴分解图,进而绘出一个地区不同时期的主应力网络图(即平面应力轨迹图),
In order to study the spatial distribution of geological structure in a region and its evolution in time, people have always attached importance to the restoration of tectonic stress field in recent thirty years. Among them, the use of stereographic projection method qualitative analysis of tectonic stress field, is considered as an effective means. This method draws the stress axis decomposition view of each observation point based on the data of conjugate shear joints obtained in the small structure study, and then draws a map of the principal stress network (ie, the plane stress trajectory) of different periods in a region,