CN104482922A - Structural plane measuring method based on three-dimensional laser scanning technique - Google Patents

Structural plane measuring method based on three-dimensional laser scanning technique Download PDF

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Publication number
CN104482922A
CN104482922A CN201510025427.1A CN201510025427A CN104482922A CN 104482922 A CN104482922 A CN 104482922A CN 201510025427 A CN201510025427 A CN 201510025427A CN 104482922 A CN104482922 A CN 104482922A
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CN
China
Prior art keywords
structural plane
dimensional laser
measuring method
laser scanning
scanning technique
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CN201510025427.1A
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Chinese (zh)
Inventor
李华
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PowerChina Chengdu Engineering Co Ltd
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PowerChina Chengdu Engineering Co Ltd
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Priority to CN201510025427.1A priority Critical patent/CN104482922A/en
Publication of CN104482922A publication Critical patent/CN104482922A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying

Abstract

The invention relates to the structural plane measuring technique in the engineering geological investigation field and discloses a structural plane measuring method based on the three-dimensional laser scanning technique. The structural plane measuring method solves the problems that working time is long and efficiency is low in rock mass structural plane measuring modes in the prior art. Investigation window rock mass surface laser-point clouds are obtained through the three-dimensional laser scanning technique, rock mass surface true color digital photos are obtained through a digital camera, structural planes are recognized through the three-dimensional laser-point clouds and the true color digital photos, the occurrence of the structural planes is worked out, the exposing lines of the structural planes are generated, and the length and persistence ratio of the structural planes and the distance between the structural planes and the like are measured. The method is suitable for rock mass structural plane measuring.

Description

A kind of structural plane measuring method based on three-dimensional laser scanning technique
Technical field
The present invention relates to the structural plane measuring technique in engineering geological investigation field, be specifically related to a kind of structural plane measuring method based on three-dimensional laser scanning technique.
Background technology
Rock mass structure planar survey is one of working contents of geology field work, and concrete investigation content comprises structural plane group number, occurrence, length, spacing, connected ratio, proterties etc.; Method conventional at present utilizes compass and tape measure manual measurement one by one, then digitizing, and the method field work time is long, and efficiency is low.
Summary of the invention
Technical matters to be solved by this invention is: propose a kind of structural plane measuring method based on three-dimensional laser scanning technique, solves in conventional art longevity of service, inefficient problem that rock mass discontinuity metering system exists.
The technical solution adopted for the present invention to solve the technical problems is: a kind of structural plane measuring method based on three-dimensional laser scanning technique, comprises the following steps:
A. selected investigation window;
B. utilize three-dimensional laser scanner to scan investigation window, obtain the cloud data of investigation window;
C. utilize digital camera to take investigation window, obtain the digital photograph of investigation window;
D. utilize cloud data to superpose the true three-dimension image of digital photograph reduction investigation window, and sketch the contours of concrete structure face according to this;
E. based on the concrete structure face obtained, its correlation parameter is measured.
Concrete, in steps A, the mode of described selected investigation window is:
In footrill, choose 5m long, the high scope of 2m is as investigation window.
Concrete, in step D, the described true three-dimension image utilizing cloud data to superpose digital photograph reduction investigation window, and the method sketching the contours of concrete structure face is according to this:
D1. three-dimensional point cloud and digital photograph superposition are formed the true color three-dimensional model of investigation window;
D2. the structural plane of wire or planar is tentatively determined according to the bright-dark degree of laser spots in laser point cloud;
D3. to according to digital photograph, each concrete structural plane is sketched the contours of.
Concrete, in step e, described correlation parameter comprises: occurrence, length, spacing, connected ratio.
Concrete, the acquisition methods for occurrence:
The structural plane determined is chosen more than 3 laser spots, calculates the occurrence of structural plane.
Concrete, the acquisition methods for length:
Its length is directly inquired about for the structural plane showing as wire, its maximum length is then measured as its length for the structural plane showing as planar.
Concrete, the acquisition methods for spacing:
First, measure the visual spacing of adjacent structural plane on a cloud surface, then, according to structural plane and the some angle on cloud surface and the true spacing of structural plane visual distance computation structural plane.
Concrete, the acquisition methods for connected ratio:
First, each group of structural plane is projected on adit axis, then, the projected length in crack is added up, then divided by investigation length of window, obtain the connected ratio in this group crack.
The invention has the beneficial effects as follows:
1) the field work time is reduced: the geometric properties directly being obtained all structural planes of investigation window by 3 D laser scanning, does not need manually to measure one by one;
2) overall process digitizing: the achievement after scanning is digitised points cloud, directly enters CAD software and carries out the occurrence in later stage, mark length, spacing, connected ratio statistics.
Embodiment
The present invention is intended to propose a kind of structural plane measuring method based on three-dimensional laser scanning technique, solves in conventional art longevity of service, inefficient problem that rock mass discontinuity metering system exists.Its core concept is: the cloud data directly being obtained all structural planes of investigation window by 3 D laser scanning, again in conjunction with the true three-dimension image of the digital photo reduction investigation window of digital camera shooting, and sketch the contours of concrete structure face according to this, then measure its correlation parameter based on the structural plane obtained.
Embodiment:
The structural plane measuring method based on three-dimensional laser scanning technique in this example comprises the following steps:
1, investigation window is chosen:
In footrill, choose 5m long, the high scope of 2m is as investigation window.
2, three-dimensional data obtains:
(1) utilize three-dimensional laser scanner to scan investigation window, obtain the cloud data of investigation window;
(2) utilize digital camera to take investigation window, obtain the digital photograph of investigation window;
(3) three-dimensional point cloud and digital photograph superposition are formed the true color three-dimensional model of investigation window.
3, trace identification:
(1) structural plane of wire or planar, is tentatively determined according to the bright-dark degree of laser spots in laser point cloud;
(2), to according to digital photograph, each concrete structural plane is sketched the contours of.
4, occurrence obtains:
The structural plane determined is chosen more than 3 laser spots, calculates the occurrence of structural plane.
5, the acquisition of length:
(1) structural plane showing as wire directly inquires about its length;
(2) structural plane showing as planar then measures its maximum length as its length.
6, the acquisition of spacing:
(1) the visual spacing of adjacent structural plane on a cloud surface is measured;
(2) according to structural plane and the some angle on cloud surface and the true spacing of structural plane visual distance computation structural plane.
7, connected ratio calculates:
(1) each group of structural plane is projected on adit axis;
(2) projected length in crack is added up, then divided by investigation length of window, obtain the connected ratio in this group crack.

Claims (8)

1., based on a structural plane measuring method for three-dimensional laser scanning technique, it is characterized in that, comprise the following steps:
A. selected investigation window;
B. utilize three-dimensional laser scanner to scan investigation window, obtain the cloud data of investigation window;
C. utilize digital camera to take investigation window, obtain the digital photograph of investigation window;
D. utilize cloud data to superpose the true three-dimension image of digital photograph reduction investigation window, and sketch the contours of concrete structure face according to this;
E. based on the concrete structure face obtained, its correlation parameter is measured.
2. a kind of structural plane measuring method based on three-dimensional laser scanning technique as claimed in claim 1, it is characterized in that, in steps A, the mode of described selected investigation window is:
In footrill, choose 5m long, the high scope of 2m is as investigation window.
3. a kind of structural plane measuring method based on three-dimensional laser scanning technique as claimed in claim 1, it is characterized in that, in step D, the described true three-dimension image utilizing cloud data to superpose digital photograph reduction investigation window, and the method sketching the contours of concrete structure face is according to this:
D1. three-dimensional point cloud and digital photograph superposition are formed the true color three-dimensional model of investigation window;
D2. the structural plane of wire or planar is tentatively determined according to the bright-dark degree of laser spots in laser point cloud;
D3. to according to digital photograph, each concrete structural plane is sketched the contours of.
4. a kind of structural plane measuring method based on three-dimensional laser scanning technique as claimed in claim 1, it is characterized in that, in step e, described correlation parameter comprises: occurrence, length, spacing, connected ratio.
5. a kind of structural plane measuring method based on three-dimensional laser scanning technique as claimed in claim 4, is characterized in that, the acquisition methods for occurrence:
The structural plane determined is chosen more than 3 laser spots, calculates the occurrence of structural plane.
6. a kind of structural plane measuring method based on three-dimensional laser scanning technique as claimed in claim 4, is characterized in that, the acquisition methods for length:
Its length is directly inquired about for the structural plane showing as wire, its maximum length is then measured as its length for the structural plane showing as planar.
7. a kind of structural plane measuring method based on three-dimensional laser scanning technique as claimed in claim 4, is characterized in that, the acquisition methods for spacing:
First, measure the visual spacing of adjacent structural plane on a cloud surface, then, according to structural plane and the some angle on cloud surface and the true spacing of structural plane visual distance computation structural plane.
8. a kind of structural plane measuring method based on three-dimensional laser scanning technique as claimed in claim 4, is characterized in that, the acquisition methods for connected ratio:
First, each group of structural plane is projected on adit axis, then, the projected length in crack is added up, then divided by investigation length of window, obtain the connected ratio in this group crack.
CN201510025427.1A 2015-01-19 2015-01-19 Structural plane measuring method based on three-dimensional laser scanning technique Pending CN104482922A (en)

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
CN105180890A (en) * 2015-07-28 2015-12-23 南京工业大学 Rock structural surface occurrence measuring method integrated with laser-point cloud and digital imaging
CN106524998A (en) * 2016-11-01 2017-03-22 中国地质大学(武汉) Method for measuring tunnel linear exposed structural surface based on three-dimensional laser scanning technique
CN107918952A (en) * 2017-11-10 2018-04-17 长江三峡勘测研究院有限公司(武汉) A kind of structural plane roughness evaluation method based on Smart3d three-dimensional data models
CN108253894A (en) * 2018-02-06 2018-07-06 中原内配集团股份有限公司 A kind of detection method of cylinder-barrel surface bulge-structure
CN108489403A (en) * 2018-06-08 2018-09-04 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT occurrence based on 3 D laser scanning
CN108489402A (en) * 2018-06-08 2018-09-04 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT scale based on 3 D laser scanning
CN108801221A (en) * 2018-06-08 2018-11-13 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT scale based on digital photogrammetry
CN110298103A (en) * 2019-06-25 2019-10-01 中国电建集团成都勘测设计研究院有限公司 The steep Dangerous Rock Body investigation method of height based on unmanned aerial vehicle onboard three-dimensional laser scanner
CN111007067A (en) * 2019-12-31 2020-04-14 山东大学 Automatic identification method and system for rock mass structural plane
CN112066951A (en) * 2020-09-11 2020-12-11 中煤科工集团重庆研究院有限公司 Geological recording system based on photogrammetry technology
CN112347901A (en) * 2020-11-04 2021-02-09 长江岩土工程总公司(武汉) Rock mass analysis method based on three-dimensional laser scanning technology
CN112965135A (en) * 2021-01-28 2021-06-15 长安大学 Nondestructive detection comprehensive method for spatial heterogeneous distribution of grotto cliff body fractures

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CN104063860A (en) * 2014-06-12 2014-09-24 北京建筑大学 Method for refining edge of laser-point cloud
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CN104181548A (en) * 2014-09-01 2014-12-03 中国电建集团成都勘测设计研究院有限公司 Method for monitoring water and soil conservation condition based on three-dimensional laser scanning technology

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EP1903303A2 (en) * 2006-09-25 2008-03-26 Kabushiki Kaisha Topcon Surveying method, surveying system and surveying data processing program
CN102072725A (en) * 2010-12-16 2011-05-25 唐粮 Spatial three-dimension (3D) measurement method based on laser point cloud and digital measurable images
CN102305622A (en) * 2011-06-14 2012-01-04 北京林业大学 Arbor three-dimensional green quantity measuring method based on three-dimensional laser scanner
CN103644896A (en) * 2013-12-30 2014-03-19 中国水电顾问集团成都勘测设计研究院有限公司 Three-dimensional laser scanning-based engineering geological mapping method
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CN105180890B (en) * 2015-07-28 2017-07-21 南京工业大学 Merge the ORIENTATION OF DISCONTINUITY IN ROCK MASS measuring method of laser point cloud and digitized video
CN105180890A (en) * 2015-07-28 2015-12-23 南京工业大学 Rock structural surface occurrence measuring method integrated with laser-point cloud and digital imaging
CN106524998B (en) * 2016-11-01 2019-02-12 中国地质大学(武汉) Method based on three-dimensional laser scanning technique measurement tunnel threadiness exposure structural plane
CN106524998A (en) * 2016-11-01 2017-03-22 中国地质大学(武汉) Method for measuring tunnel linear exposed structural surface based on three-dimensional laser scanning technique
CN107918952A (en) * 2017-11-10 2018-04-17 长江三峡勘测研究院有限公司(武汉) A kind of structural plane roughness evaluation method based on Smart3d three-dimensional data models
CN108253894A (en) * 2018-02-06 2018-07-06 中原内配集团股份有限公司 A kind of detection method of cylinder-barrel surface bulge-structure
CN108253894B (en) * 2018-02-06 2020-08-18 中原内配集团股份有限公司 Detection method for surface convex structure of cylinder sleeve
CN108489402A (en) * 2018-06-08 2018-09-04 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT scale based on 3 D laser scanning
CN108801221A (en) * 2018-06-08 2018-11-13 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT scale based on digital photogrammetry
CN108489403A (en) * 2018-06-08 2018-09-04 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT occurrence based on 3 D laser scanning
CN110298103A (en) * 2019-06-25 2019-10-01 中国电建集团成都勘测设计研究院有限公司 The steep Dangerous Rock Body investigation method of height based on unmanned aerial vehicle onboard three-dimensional laser scanner
CN111007067A (en) * 2019-12-31 2020-04-14 山东大学 Automatic identification method and system for rock mass structural plane
CN112066951A (en) * 2020-09-11 2020-12-11 中煤科工集团重庆研究院有限公司 Geological recording system based on photogrammetry technology
CN112347901A (en) * 2020-11-04 2021-02-09 长江岩土工程总公司(武汉) Rock mass analysis method based on three-dimensional laser scanning technology
CN112965135A (en) * 2021-01-28 2021-06-15 长安大学 Nondestructive detection comprehensive method for spatial heterogeneous distribution of grotto cliff body fractures

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