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Image-Based Fast Safety Prediction Method for Underground Cavern Face

A technology for underground caverns and safety prediction, which is applied in optical exploration, instruments, character and pattern recognition, etc. It can solve the problems of high noise in color images and unfavorable filling analysis, and achieve the effect of high prediction accuracy.

Active Publication Date: 2016-10-26
SHANGHAI CHUANHAI INFORMATION SCI & TECH
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Problems solved by technology

In addition, due to too much noise in the color image, the previous segmentation methods for rock fissures and fillings were all based on grayscale image processing, which is not conducive to further analysis of fillings

Method used

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  • Image-Based Fast Safety Prediction Method for Underground Cavern Face
  • Image-Based Fast Safety Prediction Method for Underground Cavern Face
  • Image-Based Fast Safety Prediction Method for Underground Cavern Face

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0044] Such as figure 1 As shown, an image-based fast safety prediction method for the face of underground caverns includes the following steps:

[0045] In step 1, the infrared camera takes pictures to obtain the face image of the current mileage;

[0046] In step 2, image preprocessing is performed on the obtained face image, and steps 3 and 5 are performed respectively;

[0047] In step 3, cluster analysis is performed on the image preprocessed in step 2 to obtain a preliminary classification result;

[0048] In step 4, perform lithology identification on the basis of the prelim...

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Abstract

The invention relates to a method for rapidly and safely predicting a tunnel face of an underground cavity on the basis of an image. The method comprises the following steps of 1, shooting by an infrared camera to acquire a tunnel face image in a current mileage; 2, carrying out image preprocessing on the tunnel face image; 3, carrying out clustering analysis; 4, carrying out lithologic identification to obtain lithologic classified information; 5, carrying out edge detection on the image preprocessed in the step 2; 6, carrying out boundary extraction to obtain bedding and jointing information of the tunnel face; 7, drawing a geologic sketch map of the current tunnel face by combining the lithologic classified information and the bedding and jointing information, and obtaining structural surface information of the current tunnel face; 8, moving to a next mileage and repeatedly carrying out the steps 1 to 7; 9, according to the extracted structural surface information, carrying out three-dimensional geologic modeling; 10, according to a model formed by the three-dimensional geologic modeling, carrying out rock mass analysis, predicting stability of rock masses and finally obtaining a cavity safety predicting result. Compared with the prior art, the method has the advantages of low noise, visual modeling and the like.

Description

technical field [0001] The invention relates to an underground cavern safety prediction method, in particular to an image-based fast safety prediction method for the face of an underground cavern. Background technique [0002] The parts with low mechanical strength in the rock mass or the interlayers with relatively weak lithology constitute the discontinuous surface of the rock mass, also known as the structural plane. It is actually a geological interface with a certain direction, a certain scale, a certain shape and characteristics formed in the rock mass in the history of geological development. These geological interfaces can be rigid contact surfaces between rock blocks without any filling, such as joint planes, bedding planes, cleavage planes, schistosing planes, etc.; they can also be fissure planes with filling materials or the obvious weakness of the upper and lower bedding planes. Interlayers: faults with a certain thickness, structural fracture zones, contact fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/02G06K9/62
Inventor 朱爱玺任青文徐磊单明章
Owner SHANGHAI CHUANHAI INFORMATION SCI & TECH
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