Three-dimensional laser scanning method for surface deformation of similar materials in underground engineering simulation test

An underground engineering and three-dimensional laser technology, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve the problems that observation errors cannot meet the test requirements, cannot capture small information changes, time-consuming and labor-intensive, etc., and achieve error levels. The effect of less human intervention and ensuring the accuracy of observation

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An underground engineering and three-dimensional laser technology, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve the problems that observation errors cannot meet the test requirements, cannot capture small information changes, time-consuming and labor-intensive, etc., and achieve error levels. The effect of less human intervention and ensuring the accuracy of observation

CN109631786BActive Publication Date: 2019-12-10QINGDAO TECHNOLOGICAL UNIVERSITY

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[0045] A three-dimensional laser scanning method for surface deformation of similar materials in underground engineering simulation tests, using the five-point mark control point method, these five points are used as point cloud matching references, after determining the scanning parameters, use three-dimensional laser scanning for underground engineering before and after excavation to obtain similar The surface point cloud deformation data of the material simulation test, after the data is processed and modeled, is visualized to generate a visualized cloud map. Specific steps are as follows:

[0046] (1) Prepare as figure 2 The square target paper of 10cm*10cm shown; figure 1 As shown, there are channel steel uprights on both sides of the test bench, and the five-point mark control point method is to paste two target papers on the left and right channel steel uprights 2 on both sides of the test bench 1 as reference points 3, and on the same side of the uprights The distan...

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Abstract

A surface deformation method for a similar material simulation test in underground work using three-dimensional laser scanning. A five-point mark control point method is used, wherein the five points are used as a point cloud matching benchmark. Once scanning parameters are determined, a three-dimensional laser is used to scan the underground work before and after excavation so as to obtain data of surface point cloud deformation of a similar material simulation test. After processing and modeling, the data is visualized to generate a visual cloud image. The present method solves the problem present when a theodolite and a total station are used to obtain surface deformation information of a similar material simulation test performed in a laboratory, uses a three-dimensional laser scanning technique, and obtains more intuitive and more accurate test results by means of forming data cards and visual processing.

Description

technical field [0001] The invention belongs to the technical field of spatial position deformation of underground engineering, and in particular relates to a three-dimensional laser scanning similar material simulation test surface deformation method of underground engineering. Background technique [0002] The surface deformation of the existing simulation test of similar materials in underground engineering is observed by theodolite or total station, which is a single-point sequential observation. When there are many measurement points, especially when the surface of the test model collapses, falls or separates, it cannot be captured. Real-time information of deformation points, which leads to the inability to obtain a lot of information in actual underground engineering, even if the information obtained is isolated point information. [0003] Therefore, in order to obtain accurate and real-time deformation information of different spatial positions during the implementat...

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Application Information

Patent Timeline

10 Dec 2019

Publication

CN109631786B

IPC: G01B11/16

CPC: G01B11/16

Inventors: 袁长丰; 王英汀