Measurement method for enhancing tunnel lateral direction penetrating accuracy

Abstract

The invention provides a measuring method for enhancing the transverse penetrating precision of a channel. Based on the traditional hole guiding wire measurement, the method uses the spiral theodolite on part of the control points to increase the directional angle of the guiding edges and obtains the engineering coordinate of the control points in the data processing. The invention uses characteristic that the respective measuring results by the spiral theodolite of independence and non accumulation of the errors, which avoids the defects of low positioning precision of the control point caused by the continuous accumulation in the present measuring technology and significantly enhances the engineering coordinate precision of the control points, so that the invention can achieve the purpose of enhancing the transverse penetrating precision of a channel. The measuring method of the invention is extensively applied to the construction of sorts of channels, especially the over-long mountain-crossing and river-crossing channels with high penetrating precision.

Description

Technical field: [0001] The invention relates to a measuring method for tunnel construction, in particular to a measuring method capable of improving the accuracy of tunnel transverse penetration. Background technique: [0002] The precise penetration of the tunnel in the transverse direction is crucial to various tunnel projects, which directly affects the quality of the project, especially the tunnels that pass through mountains and rivers require higher penetration precision. There are many factors affecting the accuracy of lateral penetration, among which tunnel measurement is one of the important influencing factors. Traverse measurement is a commonly used method for tunnel measurement. It starts from the starting point of known coordinates, and uses a precise total station to observe at each control point in turn to measure the distance between the sides of the wires connecting adjacent control points. The length and each turning angle value, and then calculate the en...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect that the angle error of the existing wire measurement in the cave has accumulated continuously, and to provide a measurement method for improving the accuracy of tunnel transverse penetration. The measurement of the azimuth angle of the wire side, and adding this value to the data processing, can significantly improve the engineering coordinate accuracy of each control point, so as to achieve the purpose of improving the tunnel horizontal penetration accuracy

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