綦建峰, 隋旺华, 张改玲, 徐继山. 2014: 基于SEM图像处理红层砂岩孔隙度及分维数计算分析. 工程地质学报, 22(s1): 339-345. DOI: 10.13544/j.cnki.jeg.2014.s1.057
    引用本文: 綦建峰, 隋旺华, 张改玲, 徐继山. 2014: 基于SEM图像处理红层砂岩孔隙度及分维数计算分析. 工程地质学报, 22(s1): 339-345. DOI: 10.13544/j.cnki.jeg.2014.s1.057
    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

    基于SEM图像处理红层砂岩孔隙度及分维数计算分析

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

    • 摘要: 获得了深部红层砂岩的扫描电镜(SEM)图像,介绍了基于微观图像计算岩石孔隙度的方法。运用Image-Pro Plus(IPP)图像处理技术提取了不同放大倍数SEM图像的岩石表面孔隙面积、周长、形态特征等信息,进行了岩石微观孔隙结构分形研究与孔隙度计算。结果表明:深部红层砂岩微观孔隙结构具有分形特征,分维数在1.8312~1.3302之间,随SEM图像放大倍数增加孔隙分形维数呈减小趋势,与扫描电镜视域范围内孔隙数量形态和分布均匀程度有关; 基于微观图像计算岩石孔隙度不同放大倍数SEM图像的结果有一定差异,选取300~600倍SEM图像计算岩石孔隙度与实测孔隙度值符合度较高,验证了该方法的实际可行性。提出的方法和分析成果为研究红层砂岩及类似岩体崩解宏观破坏提供了依据。

       

      Abstract: 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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