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针对浙江台缙高速S9松散体高边坡,结合边坡施工过程对表面位移进行了监测。应用每一级边坡的表面位移量测信息,包括水平位移和垂直位移,采用弹塑性位移反分析反演某一岩体的弹性模量和内摩擦角,利用反演得到弹性模量和内摩擦角计算预测下一级边坡开挖可能引起的边坡变形。由于边坡表面位移测点都是在边坡开挖后埋设的测点,测得表面位移均为下级边坡开挖引起的增量位移,因此,采用了结合施工过程的增量位移反分析方法。计算结果表明,上级边坡的同一测点的水平位移的预测值和实测值吻合的较好,垂直位移的预测值和实测值误差相对较大。
According to the high slope of S9 loose body in Taizhou, Zhejiang, the displacement of the surface is monitored with the construction of slope. The surface displacement of each slope is measured, including horizontal displacement and vertical displacement. The elastic modulus and internal friction angle of a rock mass are retrieved by elastic-plastic displacement back analysis. The elastic modulus and internal The calculation of friction angle predicts the slope deformation that may be caused by the excavation of the next slope. Since the displacement measuring points on the slope surface are all buried measuring points after the excavation of the slope, the surface displacement measured is the incremental displacement caused by the excavation of the lower slope. Therefore, the incremental displacement back analysis method. The calculation results show that the prediction value of the horizontal displacement of the same measuring point of the upper slope agrees well with the measured value, and the error of the predicted value and the measured value of the vertical displacement is relatively large.