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采用偏最小二乘回归分析方法分析矿区地应力场分布.以乌鞘岭隧道岭脊地段的有限测点的地应力测量结果为样本,使用商业有限元软件ANSYS对岭脊地段区域的地应力场进行数值模拟.利用地应力实测数据与计算结果进行偏最小二乘回归计算,得到拟合的地应力场数据.与传统最小二乘分析方法相比,本文的方法通过主成分分析,可以有效解决多因变量回归计算时由于响应变量之间较高的相关性而导致的回归计算误差,并可以有效地反映变量间的关系,为地应力场的建立提供有效的数据支持.
Partial least squares regression analysis was used to analyze the distribution of geo-stress field in the mining area.With the finite element analysis of the measured stress in the ridge section of Wushaoling tunnel as a sample, the commercial finite element software ANSYS was used to analyze the geostress field The numerical simulation is carried out.The partial least-squares regression calculation of the measured data and the calculation results of the ground stress results in the fitting of the data of the ground stress field.Compared with the traditional least squares analysis method, the method of this paper can be effectively solved by the principal component analysis The error of regression calculation due to the high correlation between response variables in the multi-dependent regression calculation can effectively reflect the relationship between variables and provide effective data support for the establishment of geostress field.