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tunnel gauge

A measuring instrument and tunnel technology, applied in the field of tunnel measuring instruments, can solve the problems of complex structure of the trolley, and achieve the effect of simple structure

Inactive Publication Date: 2016-08-17
CHINA CONSTR FOURTH ENG DIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the structure of the trolley for detecting over and under excavation is complex

Method used

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Embodiment Construction

[0009] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

[0010] Such as figure 1 As shown, a tunnel measuring instrument includes a walking frame for walking along the tunnel and a measuring ring 101 pre-fitted according to the design contour of the tunnel; the measuring ring 101 is set on the walking frame.

[0011] Compared with the trolley detecting tunnel overbreak and underbreak in the prior art, the tunnel measuring instrument provided by the embodiment of the present invention includes a traveling frame and a measuring ring. The walking frame controls the measurement ring along the tunnel, and the measurement ring is pre-fitted according to the design contour of the tunnel. Therefore, the measurement ring will fit on the inner wall of the tunnel and go along the tunnel. When the tunnel is over-excavated, the tunnel There will be a large gap between the inner wall...

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Abstract

The invention relates to the field of tunnel surveying, in particular to a tunnel surveying instrument, which includes a traveling frame for walking along the tunnel and a measuring ring fitted in advance according to the design contour of the tunnel; the measuring ring is arranged on the traveling frame. Compared with the trolley detecting tunnel overbreak and underbreak in the prior art, the tunnel measuring instrument provided by the present invention includes a traveling frame and a measuring ring. The walking frame controls the measurement ring along the tunnel, and the measurement ring is pre-fitted according to the design contour of the tunnel. Therefore, the measurement ring will fit on the inner wall of the tunnel and go along the tunnel. When the tunnel is over-excavated, the tunnel There will be a large gap between the inner wall of the tunnel and the measuring ring. When the tunnel is under-excavated, the inner wall of the tunnel will block the progress of the measuring ring. Therefore, it is simple and convenient to use the tunnel measuring instrument to detect the overbreak and underbreak of the tunnel, and the tunnel measuring instrument has a simple structure.

Description

technical field [0001] The invention relates to the field of tunnel surveying, in particular to a tunnel surveying instrument. Background technique [0002] The current double-lane tunnel generally adopts a single center or three centers in design, that is, the inner contour of the tunnel is a circular arc with the same radius of curvature or three circular arcs with different radii of curvature. After the tunnel is completed according to the design drawings, it is necessary to detect the overbreak and underbreak of the tunnel, that is, the contour line at the time of design is used as the baseline, and the part of the actual excavated section outside the baseline becomes overbreak, and the part inside the baseline becomes underbreak. dig. [0003] In related technologies, the main method of detecting over- and under-excavation is to use a trolley. Use the trolley to simulate the designed outline, and then the trolley travels along the tunnel. When the tunnel has over- and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/20
Inventor 杜江
Owner CHINA CONSTR FOURTH ENG DIV