分别从两端洞口引测方向进洞和斜井洞口引测方向进洞两个方面分析垂线偏差对贯通误差的影响规律。利用EGM2008模型,计算全国1°×1°的垂线偏差,并绘出等值线图。结合国内高铁长大隧道工程实际情况,计算垂线偏差对贯通误差的影响值。 The influences of the vertical deviation on the penetration error were analyzed from the two directions of the lead-in hole at both ends of the hole and the hole in the direction of the inclined hole entrance. Using the EGM2008 model, the vertical deviation of 1 ° × 1 ° is calculated and the contour map is drawn. Combined with the actual situation of the domestic high-speed railway tunnel project, calculate the influence of vertical deviation on through error.