According to the design drawings, t

According to the design drawings, the line center and the side line are released. In the measurement, the general straight section releases the side pile and elevation every 10m, the curve section is encrypted, and the pile is placed every 5m. The pile point is added with φl2 steel bar. Accurately mark the elevation control line on the reinforcement pile, and set the temporary leveling point on the side wall of the tunnel during surveying and setting, one every 100-150m, so as to review in time during construction.It is forbidden to disturb the guide line during construction, especially when paving operations, collision is strictly prohibited. When the vibration amplitude of the guide line is large, stop the construction work to prevent the appearance of wavy roads.