摘要
本文从地应力测量数据误差处理的角度阐述了地应力计算的最小二乘法 ,对地应力测量精度评定方法进行了改进。采用协方差传播律进行误差计算 ,使精度评定的结果更加准确。利用应力的坐标变换关系 ,推导出主应力与应力分量之间的微分关系 ,使主应力的精度计算更加简便。提出了主应力的偏角误差概念及其计算方法 ,使主应力方向的精度评定更加真实客观。
The least square method for rock stress measurement is described in this paper. The method of precision estimation is improved. Precision estimation is made more reliable using error calculation by the law of covariance propagation. By coordinate transformation of stress we have the differential relationship between the principal stresses and stress components to facilitate deviation calculation. Precision estimation of principal direction is more objective by using principal stress deflection error proposed in this paper.
出处
《地质力学学报》
CSCD
2000年第2期53-63,共11页
Journal of Geomechanics
关键词
地应力
测量
精度评定
误差分析
rock stress
measurement of rock stress
precision estimation
error analysis
