There may be widespread changes in groundelevation as well as horizontal or shear displacements.
标高可能发生广泛的变动，也可能发生水平位移或剪切位移。
2
By means of the existing measurement control points on the groundelevation for lofting, determine the excavation depth.
利用已有的丈量控制点对原地面高程进行放样，确定开挖深度。
3
A direct result of land subsidence in Cangzhou coastal plain areas of low groundelevation loss, resulting in sinking of the railway roadbed, storm surge disasters.