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A method and equipment for quantifying a rock fracture network

A technology of rock fissures and networks, applied in image data processing, instruments, calculations, etc., can solve problems such as result oscillation and fractal index instability

Active Publication Date: 2019-06-21
NORTH CHINA INST OF SCI & TECH
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Problems solved by technology

If the number of nodes selected during the calculation is different or the positions of the intercepted nodes are different, different regression results will be obtained, and the resulting oscillation will make the calculated fractal index value unstable.

Method used

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  • A method and equipment for quantifying a rock fracture network
  • A method and equipment for quantifying a rock fracture network
  • A method and equipment for quantifying a rock fracture network

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Embodiment approach

[0059] According to an embodiment of the present invention, the device for determining the number of times of head and tail segmentation includes: a segmentation module, which is used to segment the rock fracture network successively by using the head and tail segmentation method, to obtain the result of head and tail segmentation; a module for determining the number of times of head and tail segmentation, for When the index of the number of head objects and the number of tail objects in the obtained head-to-tail segmentation results exceeds the ratio threshold, the segmentation process ends, thereby determining the number of head-to-tail segmentations of the rock fracture network.

[0060] According to an embodiment of the present invention, the fractal set type includes at least multiple self-similar fractal sets and different proportion fractal sets; the fractal set type determination device includes: a judging module for judging the head-to-tail segmentation of the determine...

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Abstract

The invention discloses a method and equipment for quantifying a rock fracture network. The method comprises the following steps: firstly, determining the number of head and tail segmentation times ofthe rock fracture network; According to the determined number of times of head and tail segmentation of the rock fracture network, further determining the fractal set type of the rock fracture network, for example, the fractal set type belongs to a multiple self-similar fractal set of a simple hierarchical structure or a fractal set of different proportions of a complex hierarchical structure; And finally, determining the fractal index of the rock fracture network by adopting a fractal index quantization method corresponding to the determined fractal set type. Therefore, when the fractal index is quantized, the fractal index can be considered separately for rock fracture networks of simple and complex hierarchical structures, and the problem that the fractal index value obtained through calculation is unstable due to the fact that the number of selected nodes is different during calculation or the positions of intercepted nodes are different in a traditional minimum regression calculation method is effectively avoided.

Description

technical field [0001] The invention relates to the field of rock mechanics, in particular to a method and equipment for quantifying rock fracture networks. Background technique [0002] The work of using fractal index to quantify rock fracture network began with Barton (in 1985) who discovered the similarity between rock fracture network and fractal graph, quantified two-dimensional rock fracture network by using box dimension, and then used fractal index to quantify rock The fracture network has aroused widespread attention, and then the correlation dimension and small island dimension are also used to quantify the rock fracture network. [0003] However, no matter which method is used to perform specific calculations in engineering practice, the least square method is often used to fit the fractal index results. If the number of nodes selected during the calculation is different or the position of the intercepted nodes is different, different regression results will be o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/11G06T7/136
Inventor 隋丽丽于健苗文静王鹤远
Owner NORTH CHINA INST OF SCI & TECH
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