Tunnel monitoring and measurement is the guarantee of tunnel construction safety and implementation of dynamic parameter design; relying on the surface settlement, vault settlement and convergence deformation in the tunnel during the construction of Da-Puling tunnel on Guangxi expressway, based on the monitoring data, the stress situation and deformation characteristics of the tunnel are analyzed; the results show that the construction parameters of Da-Puling tunnel are basically reasonable, and the portal section is the key to the control of the whole construction parameters, the settlement of the tunnel vault in the V-Class surrounding rock of the portal section is about 4 times of the convergence deformation, which is mainly caused by the gravity of the overlying soil layer. The settlement of the tunnel vault in the IV-class surrounding rock is close to the convergence deformation, and the stress release deformation in the loose area of the tunnel surrounding rock is the main one. The monitoring and analysis in the construction process provides reliable data for design and construction in time, and ensures the smooth progress of tunnel construction.

隧道监测与测量是隧道施工安全和动态参数设计实施的保障；广西高速公路大蒲岭隧道施工过程中，依托隧道地表沉降、拱顶沉降和收敛变形，根据监测数据，分析了隧道的受力情况和变形特征；结果表明，大埔岭隧道施工参数基本合理，门段是整个施工参数控制的关键，门段V级围岩隧道拱顶沉降为约 4 倍的收敛变形，这主要是由上覆土层的重力引起的。IV级围岩隧道拱顶沉降接近收敛变形，隧道围岩松散区应力释放变形为主。施工过程中的监测分析及时为设计和施工提供可靠的数据，保障隧道施工的顺利进行。