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Tunnel prism-free monitoring and measuring mark and tunnel prism-free monitoring and measuring method

A prism-free, measuring technology, applied in measuring devices, measuring instruments, surveying, mapping and navigation, etc., can solve the problems of increasing cutting, grinding, reducing tunnel construction efficiency, etc.

Inactive Publication Date: 2017-01-04
NO 7 ENG CO LTD OF CHINA RAILWAY 19 BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the measuring end of the tunnel monitoring and measuring element is removed from the anchoring end, part of the anchoring end is exposed on the surface of the initial support of the tunnel, which increases the work of cutting and grinding the exposed part of the anchoring end, and reduces the tunnel construction efficiency.

Method used

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Embodiment Construction

[0034] see figure 1 , the tunnel mirrorless monitoring measurement target 100 of this embodiment includes a measurement head 1 , a sleeve 2 and an anchor 3 . The measuring head 1 and the anchor piece 3 are fixedly connected to the casing 2 respectively, the mounting plate 21 is in flush contact with the surface 5 of the primary support of the tunnel, and a part of the anchor piece 3 is inserted into the surrounding rock 4 around the tunnel so that the tunnel prism-free monitoring measurement scale 100 for anchoring.

[0035] see figure 2 , image 3 and Figure 4 , The measuring head 1 includes a groove 10 , a reflective patch 11 , a connecting portion 12 , a mounting groove 13 and a main body 14 . In this embodiment, the shape of the main body 14 is cylindrical. A groove 10 is formed on a circumferential surface of the main body 14 . In this embodiment, the shape of the groove 10 is a rectangle, and the surface of the groove 10 parallel to the axis of the main body 14 i...

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Abstract

The invention provides a tunnel prism-free monitoring and measuring mark and a tunnel prism-free monitoring and measuring method. The tunnel prism-free monitoring and measuring mark comprises a measuring mark head, a casing pipe and an anchoring part, a mounting plate of the casing pipe is located at a first end of the casing part, the measuring mark head penetrates through the mounting plate to be fixedly connected with the casing pipe, and the anchoring part is fixedly connected to a second end of the casing pipe. The method comprises the steps that the tunnel prism-free monitoring and measuring mark is provided, wherein the tunnel prism-free monitoring and measuring mark comprises the measuring mark head, the casing pipe and the anchoring part; the anchoring part is fixedly connected to the second end of the casing pipe; the measuring mark head penetrates through the mounting plate to be fixedly connected with the casing pipe; a reflection patch is fixedly assembled in a groove of the measuring mark head; the anchoring part of the tunnel prism-free monitoring and measuring mark on which the above-mentioned steps are completed is inserted into surrounding rock, the tunnel prism-free monitoring and measuring mark is anchored through the anchoring part, and the mounting plate is flush with the primary supporting surface of a tunnel. The tunnel prism-free monitoring and measuring mark is stable and simple in structure and rapid and convenient to operate and can reduce the construction cost.

Description

technical field [0001] The invention relates to the technical field of tunnel construction monitoring and measurement, in particular to a prism-free tunnel monitoring and measuring target, and also provides a tunnel prism-free monitoring and measuring method using the tunnel monitoring and measuring target. Background technique [0002] At present, in the tunnel construction in our country, the new Austrian method is still widely used in the construction, emphasizing the self-supporting effect of the surrounding rock. During the construction process, displacement monitoring is usually used to monitor the stability of the surrounding rock, so that the displacement or displacement rate is relatively small. When it is large, measures can be taken to strengthen the support in time to keep the cavern stable and ensure construction safety. Monitoring and measurement is the core of NATM construction, so it is very important to carry out on-site monitoring and measurement work to en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
CPCG01C15/00
Inventor 刘国强
Owner NO 7 ENG CO LTD OF CHINA RAILWAY 19 BUREAU GRP
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