A Rock Mass Evaluation and Analysis Method Based on Digital Panoramic Borehole Image
An analysis method and digital technology, applied in image analysis, image enhancement, image data processing and other directions, which can solve the problems of unstable processing results and low work efficiency.
Inactive Publication Date: 2021-07-06
WUHAN UNIV
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Manual input of operating parameters, especially for the case of large image information data, not only reduces work efficiency, but also causes instability of processing results
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[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0042] as attached figure 1 As shown in the figure, a method for rock mass evaluation and analysis based on digital panoramic borehole images is to process the borehole optical images obtained based on digital borehole imaging technology on the Matlab platform according to the following steps:
[0043] S101 , read the plane unfolded image of the digital drilling, perform color space conversion, and extract the S channel image in the HSV space separately.
[0044] Image reading is the premise of all digital image processing. The image reading function provided by Matlab supports a variety of image file formats, such as jpg, bmp, png, gif, tif, etc. At the same time, Matlab can effectively identify different image types such as binary images, grayscale images, and index images. The images obtained based on digital borehole imaging techn...
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The invention discloses a rock mass evaluation and analysis method based on a digital panoramic borehole image. The borehole optical image obtained based on digital borehole camera technology is processed according to the following steps: S101. Read the plane expansion of the digital borehole image, performing color space conversion, and separately extracting the S-channel image in the HSV space; S102, preprocessing the acquired S single-channel image; S103, performing adaptive threshold segmentation and edge refinement on the preprocessed image; S104, Matching the image with a sinusoidal function; S105, extracting the fitting parameters of the sinusoidal function, and converting corresponding rock mass parameters; S106, calculating the number of structural noodles per unit volume of the entire image and the opening degree of structural planes to obtain a comprehensive rock mass evaluation coefficient. The rock mass evaluation and analysis method of the present invention is simple and easy to implement, stable and reliable, and has high working efficiency, completes the automatic identification and parameter extraction of the drilling surface, and quickly and effectively evaluates the integrity of the rock mass.
Description
technical field [0001] The invention relates to a rock mass evaluation and analysis method, in particular to a rock mass evaluation and analysis method based on a digital panoramic borehole image. Background technique [0002] There are structural planes of different scales, different shapes, different stages and different origins developed in the engineering rock mass, and the rock mass is cut into mosaic blocks of different shapes and sizes. Practice has shown that the integrity of rock mass is an important characteristic of engineering rock mass and an important evaluation index in the fields of hydrogeology, engineering geology, civil engineering, and geotechnical engineering. There are many classification and evaluation methods of rock mass, among which the more influential ones are: the determination of the firmness coefficient of the Soviet Union's Platts rock mass, the RQD evaluation of the American deere rock mass quality index, the geomechanics RMR method, the rock...
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IPC IPC(8): G06T7/136G06T7/194G06T5/00
CPCG06T7/136G06T7/194G06T2207/30184G06T5/70
Inventor 李立龙凡余翠张明睿
Owner WUHAN UNIV