Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for measuring the convergence deformation of a circular tunnel

A technology of convergence deformation and measurement method, applied in measurement devices, instruments, optical devices, etc., can solve problems such as the inability to fully reflect the tunnel deformation, and achieve the effect of saving calculation time, reducing interference, and improving accuracy

Active Publication Date: 2017-12-26
TONGJI UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent has the defect that only a small amount of measuring point data can be obtained, which cannot fully reflect the deformation of the entire tunnel

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
  • A method for measuring the convergence deformation of a circular tunnel
  • A method for measuring the convergence deformation of a circular tunnel
  • A method for measuring the convergence deformation of a circular tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0033] The invention discloses a method for measuring the convergence deformation of a circular tunnel, which involves two aspects of on-site measurement and data processing. In terms of on-site measurement, the present invention takes any circular tunnel as the scanning target and uses three-dimensional laser scanning technology for measurement, which can obtain the three-dimensional coordinates of thousands of measuring points with a distance of several millimeters, the measurement speed is very fast, and the point cloud It can be automatically recorded in the storage system of the ...

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 invention relates to a method for measuring circular tunnel convergence deformation. The method includes the steps of S1, by a three-dimensional laser scanner, acquiring the working base point coordinates and tunnel point cloud of each observation station; S2, using working base points as splicing datum points to merge the tunnel point cloud into a unified reference coordinate system, and segmenting into point cloud of a multi-ring pipe joint according to the pipe joint; S3, fitting the point cloud of a single-ring pipe joint into a cylindrical face according to an improved cylindrical face fitting algorithm, extracting pipe joint axis point coordinates, projecting the cylindrical face to a plane along the axis direction of the pipe joint to obtain a two-dimensional tunnel point cloud contour line, and fitting into an ellipse according to an ellipse fitting algorithm; S4, expanding the ellipse into a three-dimensional elliptic cylindrical surface along the axis so as to obtain the three-dimensional convergence deformation of a whole tunnel. Compared with the prior art, the method has the advantages that the longitudinal axis and convergence deformation of the tunnel under construction and the tunnel under operation can be acquired, monitoring point laying is not needed, high measuring efficiency is achieved, and comprehensive monitoring data is provided to tunnel construction and operation.

Description

technical field [0001] The invention relates to the technical field of tunnel deformation monitoring, in particular to a method for measuring the convergence deformation of a circular tunnel. Background technique [0002] In recent years, with the rapid development of my country's urbanization process, in order to solve the problem of traffic congestion in big cities, major cities are vigorously developing urban rail transit projects. In addition to subway tunnels, the construction scale of road tunnels in my country is also expanding. At present, road tunnels are increasing at an average annual rate of 350 kilometers. Deformation monitoring is indispensable both during the construction and operation phases of tunnels. Because the tunnel is located in a rock-soil medium with complex conditions, the interaction mechanism between the stratum and the structure is not clear, so there is still no relatively complete tunnel structure design theory. [0003] Currently, the common...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16
Inventor 谢雄耀朱侃唯刘晨刘欢何佳敏
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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