The longitudinaldistance 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。
2
With increasing longitudinaldistance, 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。
3
Through analyzing the kinematics characteristic of the overtaking process, an algorithm for solving the minimal longitudinaldistance satisfied with the overtaking is deduced.