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Measurement method for enhancing tunnel lateral direction penetrating accuracy

A measurement method and precision technology, applied in the field of measurement of tunnel construction, to achieve the effects of improving precision, high orientation precision, and avoiding low positioning precision

Inactive Publication Date: 2009-12-30
SHANGHAI TUNNEL ENGINEERING CO. LTD. +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Measurement method for enhancing tunnel lateral direction penetrating accuracy
  • Measurement method for enhancing tunnel lateral direction penetrating accuracy
  • Measurement method for enhancing tunnel lateral direction penetrating accuracy

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with specific embodiments.

[0025] See first image 3 , the figure shows the measuring wire of a 17.5km long tunnel, the wire is divided into east and west ends, EB is the control point inside the tunnel at the east end, WB is the control point inside the tunnel at the west end, JP is the control point outside the tunnel at the east end and west end point. According to the technical design book, the TCA2003 total station produced by Swiss Leica Company is used to automatically observe and record the wire edges and angles. For direction observation, 12 rounds are observed according to the design requirements of the second-class conductor technology, and the error in angle measurement is 1 second; for side length observation, each side is round-trip measured for 1 period, and each period is measured for 4 rounds. According to the angle measurement error of 1 second, the distance measurement ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C1/02G01B21/00
Inventor 王解先姚连璧余永明黄于保秦宏良刘春李全海
Owner SHANGHAI TUNNEL ENGINEERING CO. LTD.
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