根据设计图纸放出线路中心及边线，测量中一般直线段每l0m放出边桩及标高

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. <br>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.

According to the design drawings to release the center of the line and edge, the measurement of the general straight line section per l0m release edge pile and elevation, curve segment encryption, every 5m pile. The pile point is reinforced with reinforced steel. On the steel pile will be accurately marked the elevation control line, the temporary level point is located in the tunnel side wall, every 100 to 150m set one, in order to timely review during construction.<br>Disturbance guides are prohibited during construction, especially when paving operations are being made. When the vibration amplitude of the guide line is large, the construction work is stopped to prevent the appearance of wave-like road surface.

The center and sideline of the line shall be set out according to the design drawings. In the survey, the side piles and elevation shall be set out every 10m for the general straight line section. The curve section shall be densified and the piles shall be set out every 5m. The pile point shall be added with φ L2 reinforcement. The elevation control line shall be accurately marked on the reinforcement pile. During the survey, the temporary benchmark shall be set on the side wall of the tunnel, and one shall be set every 100-150m, so as to facilitate the timely review during the construction.<br>It is forbidden to disturb the guide line during construction, especially in the process of paving, collision is forbidden. When the vibration amplitude of the guide line is large, the construction operation shall be stopped to prevent the occurrence of wavy pavement.<br>