Method and device for determining rock surface fracture type and distribution based on digital image correlation technology
A technology of rock cracks and related technologies, applied in the fields of photometric mechanics and engineering testing
Active Publication Date: 2020-01-31
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The present invention provides a method and device for determining the type and distribution of rock surface cracks based on digital image correlation technology, which is used to solve the problem that the existing technology can only distinguish between tension cracks and shear cracks after the final state of rock surface cracks is formed and The problem of the shape distribution of surface cracks
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0047] figure 1It is a flow chart of Embodiment 1 of the method for determining the type and distribution of rock surface cracks based on digital image correlation technology provided by the present invention. The method for determining the type and distribution of rock surface cracks based on digital image correlation technology provided by this ...
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
Login to View More Abstract
The invention provides a method and a device for determining the type and the distribution of rock surface cracks based on a digital image correlation technology. The method for determining the type and the distribution of rock surface cracks based on the digital image correlation technology comprises the following steps: acquiring image information of the rock cracks in a preset experimental time, matching the image information acquired at different times with the initial image of the rock cracks to obtain the surface displacement field of the rock cracks in a global coordinate system, determining the development direction of the rock cracks according to the surface displacement field in the global coordinate system, and determining the type and the distribution of the rock cracks according to the development direction of the rock cracks. The method allows the crack information in various stages in the formation process of the rock surface cracks to be obtained in order to further determine the type and the form distribution of the cracks in every stage, and can solve a problem that the type and the form distribution of the rock cracks can be determined only after the formation ofthe final state of the rock cracks in the prior art.
Description
technical field [0001] The invention relates to the fields of photometric mechanics and engineering detection, in particular to a method and device for determining the type and distribution of cracks on a rock surface based on digital image correlation technology. Background technique [0002] The types of rock surface fractures can be divided into tension fractures (Type I), plane shear fractures (Type II) and composite fractures (Type I-II). Determining the fracture type of rock has extremely far-reaching significance not only for scientific research but also for industrial application. On the one hand, rock is an anisotropic heterogeneous material, and different fracture formation methods correspond to different fracture strengths. Therefore, judging the fracture type of rock is helpful to understand the failure mechanism of rock and estimate the failure intensity of rock. On the other hand, unconventional energy development requires the use of hydraulic fracturing tech...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/06
CPCG01N3/068G01N2203/0066G01N2203/0647
Inventor 肖立志纪维伟廖广志
Owner CHINA UNIV OF PETROLEUM (BEIJING)