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Quantitative analysis method for tunnel vault lining void

A quantitative analysis and lining technology, applied in the direction of measuring devices, material magnetic variables, radio wave measurement systems, etc., can solve the problems of adverse effects of construction treatment, inability to quantitatively determine tunnel vault lining, etc., and achieve the effect of quality assurance

Active Publication Date: 2020-08-07
CHINA RAILWAY DESIGN GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inability to quantitatively determine the above properties of the tunnel vault lining will adversely affect the subsequent construction treatment of lining quality defects

Method used

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  • Quantitative analysis method for tunnel vault lining void
  • Quantitative analysis method for tunnel vault lining void
  • Quantitative analysis method for tunnel vault lining void

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Experimental program
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Embodiment Construction

[0024] The present invention will be further described in detail through the accompanying drawings and specific embodiments below.

[0025] A method for quantitative analysis of voiding in tunnel vault lining of the present invention comprises the following steps:

[0026] S1. Collect tunnel engineering geological data, construction drawings, design change data and construction records; prepare the tunnel design lining thickness, grille, arch frame design section and spacing, surrounding rock type and other data according to the layout of the survey line for on-site Data collection parameter setting and post data processing use.

[0027] S2, making a testing plan and selecting technical parameters.

[0028] S3, carry out on-site investigation, and mark the measurement mileage.

[0029] S4. The dielectric constant or electromagnetic wave velocity of the lining concrete should be calibrated on-site before the test, and each tunnel should not be less than 1 place, and each plac...

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PUM

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Abstract

The invention discloses a quantitative analysis method of tunnel vault lining void, which comprises the following steps of: arranging a longitudinal geological radar measuring line on a tunnel centerline so as to determine two-dimensional data of a longitudinal section of a tunnel vault lining void area, and calculating the volume of the void area by utilizing a lining void quantitative analysisformula, wherein V is the volume of the void area, R is the curvature radius of the vault, a and b are the lengths of vertical line segments from the midpoints of the vaults at the head end and the tail end of the void area to the bottom surface of the void area respectively, and L is the longitudinal length of the void area. By the adoption of the technical scheme, the quantitative analysis method for tunnel vault lining void can determine quantitative information of tunnel vault lining void, including three-dimensional model space attributes such as the space form, position distribution andsize of quality defects.

Description

technical field [0001] The invention relates to a method for quantitatively analyzing voids in tunnel vault linings, and belongs to the technical field of engineering structure defect detection. Background technique [0002] With the rapid development of railway construction in the west of the country, the proportion of tunnel engineering in railway construction projects is getting higher and higher, and the proportion of tunnels in some railways is as high as 70%. The market prospect of tunnel inspection is very broad. At the same time, high-speed railways also put forward higher requirements for the design and construction quality of tunnels. It is particularly important for railway operations to ensure the quality of railway tunnel engineering lining entities. [0003] Affected by the construction technology, most of the quality defects of the tunnel lining are hollowed out in the vault lining at present. At home and abroad, longitudinal measuring lines are arranged on t...

Claims

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Application Information

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IPC IPC(8): G01N27/82G01S13/88G01S13/89
CPCG01N27/82G01S13/885G01S13/89
Inventor 黄潘何明峰史兴华秦秀才段文旭蒋闯李炳秀王乾龙任春山张刚王闯杨国朋高敬
Owner CHINA RAILWAY DESIGN GRP CO LTD
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