Monitoring and measuring method of culvert jacking deviation rectification

Abstract

The invention discloses a monitoring and measuring method of culvert jacking deviation rectification. The method comprises the steps as follows: (1) a measuring point A and a measuring point B are arranged on two sides of a prefabricated culvert; (2) the distance between the two measuring points is measured with a total station instrument; (3) a coordinate system is established by use of the measuring point A and the measuring point B; (4) the total station instrument is set up to collect coordinates of four angular points of the prefabricated culvert and the central point of an existing route, a field plane graph is drawn by CAD cartographic software, and the position of the completed culvert is determined; (5) the established coordinate system is converted into a coordinate system with the angular points of completed culvert as the original points by use of the CAD cartographic software; (6) new coordinates of the measuring point A and the measuring point B are calculated; (7) the elevations of the measuring point A and the measuring point B are measured, a plane coordinate system is transformed into a 3D coordinate system, the coordinates of the measuring point A and the measuring point B are back viewed by the aid of rear intersection of the total station instrument, a survey station is established, coordinate values of any point of the culvert are collected in real time during jacking and compared with coordinate values of the in-place culvert, and required deviation rectification data are obtained.

Description

technical field [0001] The invention relates to a monitoring and measuring method for culvert jacking and deviation correction, which is mainly used for measuring and monitoring the elevation and direction during jacking in the construction process of jacking culverts. Background technique [0002] In the process of jacking culvert construction, the direction and elevation control of jacking are very important, which is related to the success or failure of jacking construction. It is particularly important to obtain the direction and elevation data of the jacking culvert timely and accurately to provide data support for the jacking correction. In the usual construction process, the data measurement work of each pick is very cumbersome. When using the level to measure the height, the visibility condition is limited by the construction site, and it is often necessary to change the measuring station many times, which is time-consuming and laborious. When the total station obse...

AI Technical Summary

Problems solved by technology

In the usual construction process, the data measurement work of each pick is very cumbersome. When using the level to measure the height, the visibility condition is limited by the construction site, and it is often necessary to change the measuring station many times, which is time-consuming and laborious.

When the total station observes the jacking direction, it is necessary to draw a line on the top of the culvert and hang the ball. The position of the instrument must be on the axis of the jacking. The position of the instrument is not flexible, it is greatly affected by obstacles, and the data provided is not accurate enough

These problems affect the construction efficiency and accuracy of jacking culverts

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