The longitudinal distance of different excavation steps should be larger than the influence radius of excavation.
隧道不同开挖分部纵向间距应大于一倍的开挖影响半径。
With increasing longitudinal distance, the velocity Power Spectral Density (PSD) peak shifted to lower frequencies.
随着流向距离的增大，速度功率谱(PSD)曲线呈现峰值向低频移动的现象。
Through analyzing the kinematics characteristic of the overtaking process, an algorithm for solving the minimal longitudinal distance satisfied with the overtaking is deduced.
通过对超车过程中车辆行驶的运动学分析，推导出超车所应满足的前后纵向车距求解算法。
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