Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Shield tunneling method apparent quality method and system

A quality detection method and tunnel surface technology, which is applied in the field of shield tunnel appearance quality detection and shield tunnel structure detection and diagnosis, can solve the problem of the detection frequency and detection efficiency of the detection subject, and the total mileage is long , disease occurrence points scattered and other issues

Active Publication Date: 2017-05-31
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the operation period, due to the long total mileage of the tunnel and scattered disease occurrence points, manual inspection can no longer meet the needs of daily maintenance and repair of the tunnel
[0003]The traditional detection method is greatly affected by the detection subject, detection frequency and detection efficiency, and cannot realize the automatic detection of segment apparent quality

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Shield tunneling method apparent quality method and system
  • Shield tunneling method apparent quality method and system
  • Shield tunneling method apparent quality method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0081] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0082] Refer below figure 1 , figure 2 , image 3 Detailed description of point cloud data preprocessing

[0083] Before calculating the misalignment value and ellipticity, the point cloud data of the multi-ring segment needs to be preprocessed. Assuming that a scan and detection of the data of the 4-ring segment obtains N points, it needs to go through figure 1 4 steps are shown to comple...

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

PUM

No PUM Login to View More

Abstract

The present invention discloses a shield tunneling method apparent quality method. The method comprises the following steps: (1) obtaining point cloud data in real time through laser scanning of a tunnel segment entity; (2) generating a tunnel entity point cloud data model according to the point cloud data; (3) comparing the tunnel center of a tunnel entity point cloud model with a tunnel design BIM model center to obtain a tunnel center line deviation value; (4) obtaining a slab staggering value according to the tunnel entity point cloud model; (5) calculating and obtaining an ovality according to the tunnel entity point cloud model; (6) performing disease analysis of the tunnel entity point cloud model, wherein the disease analysis comprises disease area identification, disease category determination and disease numerical calculation; and (7) determining a detection numerical value and evaluating the tunnel apparent quality state according to a preset apparent quality evaluation standard. The shield tunneling method apparent quality method and system can rapidly obtain the three-dimensional coordinate data of the surface of a measured object in large-area and high-resolution and rapidly and largely collect space spot location information with high efficiency and high precision.

Description

technical field [0001] The invention belongs to the technical field of tunnel detection, and in particular relates to a shield tunnel appearance quality detection method and system based on laser scanning technology and BIM technology, and is mainly oriented to the detection and diagnosis of shield tunnel structures. Background technique [0002] In the construction process of shield tunneling, because the quality of segment assembly is often difficult to be completely controlled, phenomena such as staggered platform and seam, segment damage, and ellipticity exceeding the specified value often occur, as well as cracks, leakage and The apparent quality of these tunnels seriously threatens the safety of the tunnel structure. The traditional quality control of segment assembly is carried out by engineering inspectors on a regular basis to check one by one inside the tunnel. When a segment with a large misalignment is found during the inspection, the ruler is used to determine w...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01B11/00G01N21/84
CPCG01B11/002G01N21/84
Inventor 周诚丁烈云陈健徐捷闫鹏慧
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com