Rock fracturing fracture network topological structure depicting method

A technology of topological structure and rock cracks, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve problems such as the inability to describe the trend of crack expansion, and achieve the effect of avoiding different results

Active Publication Date: 2020-10-09
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

The geometric feature method and statistical method of fractures can only contain the inherent fracture information, but cannot describe the fracture propagation trend

Method used

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  • Rock fracturing fracture network topological structure depicting method
  • Rock fracturing fracture network topological structure depicting method
  • Rock fracturing fracture network topological structure depicting method

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[0070] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are some, not all, embodiments of the present invention. The following examples are only used to explain the present invention, but not to limit the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention. Unless otherwise specified, the technical means used in the embodiments are conventional means or existing technologies well known to those skilled in the art.

[0071]It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not n...

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Abstract

The invention relates to the technical field of rock fracture detection, and provides a rock fracturing fracture network topological structure depicting method which comprises the following steps: acquiring rock in-place images at different deformation moments by adopting image equipment; and acquiring in-place sub-pixel crack space distribution based on each image; by adopting the technical scheme, image boundary conditions do not need to be simplified, different results caused by different structural discretization forms are avoided, and inherent crack information is not contained; the rockfracture network can be effectively depicted, and the whole rock fracture network expansion process is obtained.

Description

technical field [0001] The invention relates to the technical field of rock fracture detection, in particular to a method for describing the topological structure of a rock fracturing fracture network. Background technique [0002] Rock fracture is a common phenomenon in rock mass engineering. Studying the evolution law of rock fracture and predicting the time and location of rock fracture are very important for basic engineering construction, efficient development of natural resources, and understanding and evaluation of deep fault activation in the earth. The rock will produce discontinuous infrasonic waves in the process of deformation and failure, and the surrounding rock noise during the excavation process is monitored. The monitoring results show that the rockburst has significant temporal and spatial characteristics. [0003] It is one of the effective means to study the spatiotemporal effect of rock fracture through the extension of rock fracture network. Numerical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G06K9/62
CPCG01N3/08G01N2203/0066G01N2203/0067G01N2203/0647G06F18/23
Inventor 武艳芳李晓张召彬赫建明郑博
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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