Qi Jianfeng, Sui Wanghua, Zhang Gailing, Xu Jishan. 2014: CALCULATION AND ANALYSIS OF THE POROSITY AND FRACTAL DIMENSION OF RED STRATUM SANDSTONE BASED ON SEM IMAGES PROCESSING. JOURNAL OF ENGINEERING GEOLOGY, 22(s1): 339-345. DOI: 10.13544/j.cnki.jeg.2014.s1.057
    Citation: Qi Jianfeng, Sui Wanghua, Zhang Gailing, Xu Jishan. 2014: CALCULATION AND ANALYSIS OF THE POROSITY AND FRACTAL DIMENSION OF RED STRATUM SANDSTONE BASED ON SEM IMAGES PROCESSING. JOURNAL OF ENGINEERING GEOLOGY, 22(s1): 339-345. DOI: 10.13544/j.cnki.jeg.2014.s1.057

    CALCULATION AND ANALYSIS OF THE POROSITY AND FRACTAL DIMENSION OF RED STRATUM SANDSTONE BASED ON SEM IMAGES PROCESSING

    • This paper presents the method to calculate the rock porosity based on the microscopic images. It extracted the surface pore area, perimeter, morphological characteristics and other information of the different magnification SEM images of the deep red stratum sandstone based on the Image-Pro Plus(IPP).It calculated the rock porosity and fractal dimension. The results show that the deep red sandstone microscopic pore structure is fractal. The fractal dimension is between 1.8312~1.3302, and it has a decreasing trend with the magnification increases of the SEM images. The number of pore morphology and distribution uniformity in the SEM sight range is the main reason. The porosity calculation result has a little different based on different microscopic images. The conformity of porosity calculated by the images multiples of 300~600 and experimental measurement is quite high, which verifies the practical feasibility of this method. The methods and results of this paper provide a basis for the study of macroscopic damage and slake durability of red strata sandstone or other similar rock.
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