用全站仪进行隧道拱顶及地表沉降观测

Settlements of Crown and Soil Surface in Tunnel Measured by Total Station

在凤凰关隧道工程中采用全站仪三角高程法测量隧道拱顶及地表的沉降,该方法的精度满足施工监测的要求。应用表明该方法具有快速、高效、可靠的优点。测得的结果能较好地反映出施工过程中围岩及土体的基本变形趋势以及受施工等因素影响而产生的异常变化,可以为现场施工安排及支护结构的稳定性评价提供可靠的依据。

Settlements of the crown and the soil surface are measured by the total station based on the trigonometric leveling method in the monitoring program in Fenghuangguan tunnel project. The analysis shows that this method could be a convenient,efficient and reliable way in tunnel monitoring program. The measured results demonstrates the basic tendency of deformation behaviors both of adjacent rocks and soil surface and the abnormality resulted by construction and so on,which is provided for the arrangement of c...