地应力测量应变值检验及应变计最佳布片方式

Direct method to verify virgin stress measurement and the optimum rosette arrangement style of hollow inclusion cell

摘要: 根据三维地应力测量的理论公式，推导出空心包体应变计在一定的布片方式下应变测值间的内在关系式，并由此提出了应变测值的直接检验法及应变计的最佳布片方式。通过实例检验，证明该方法是可行的。

Abstract: According to the principle of in situ stress measurement, the relationship among the measureed strain values with certain style of rosette arrangement are induced in this paper. On the basis of this relationship, the authors supposed a direct method to verify the accuracy of virgin stress measurement results. In addition, the optimum styles of rosette arrangement for hollow inclusion cell are also suggested. The method is proved to be valid in two cases.