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
CN100575871CInactive Publication Date: 2009-12-30SHANGHAI TUNNEL ENGINEERING CO. LTD. +1
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI TUNNEL ENGINEERING CO. LTD.
Publication Date
2009-12-30
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More