本文根据地应力钻孔形变与主应力的基本关系,进一步推得任意直角坐标系内应力张量对钻孔形变不变量的普遍的表达形式,给出了用元件附加测值迳直计算全主应力变化的简洁方法。通过新丰江穹道应力分析表明,全主应力大小与方向的变化与邻区的地震活动有较好的对应关系。 In this paper, according to the basic relationship between stress and deformation of borehole deformation, we further deduce the universal expression form of the stress tensor to the invariant of drilling deformation in any rectangular coordinate system. A concise way of changing. The stress analysis of Xinfengjiang dome shows that there is a good correspondence between the variation of total principal stress and the direction and the seismic activity in the adjacent area.