| 基于IPP图像处理的膨胀土微观结构定量研究 |
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| 引用本文： | 侯超群,席瑶,孙志彬,高可可.基于IPP图像处理的膨胀土微观结构定量研究[J].水文地质工程地质,2019,0(2):156-156. |
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| 作者姓名： | 侯超群 席瑶 孙志彬 高可可 |
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| 作者单位： | 1.合肥工业大学汽车与交通工程学院，安徽 合肥230009；2.上海中梁地产集团有限公司，上海200331 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助课题（20110205110013）；博士专项科研基金资助（JZ2016HGBZ0767） |
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| 摘 要： | 利用环境扫描电镜（ESEM）获取不同浸水时间下合肥膨胀土的微观结构扫描图像，基于专业图像处理软件Image-Pro Plus（IPP）对膨胀土的ESEM图像进行处理和分析，研究了不同浸水时间下合肥膨胀土的表观孔隙比、分形维数和大小组成情况。研究表明，膨胀土的表观孔隙比随着浸水时间的增大逐渐增大，其增长速率逐渐减小。运用小岛法对土样的颗粒和孔隙的分形维数进行研究，结果表明，膨胀土的颗粒和孔隙均具有明显的分形特征，分形维数在1.1～1.3之间。随着浸水时间的逐渐增大，颗粒的分形维数在减小，孔隙的分形维数在增大，二者呈现相反的变化趋势。对土样的颗粒和孔隙按照大（>5 μm）、中（2～5 μm）、小（1～2 μm）、微（<1 μm）4组进行分类，分析了不同浸水时间下各类颗粒和孔隙占比的演变趋势。
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| 关 键 词： | 膨胀土 微观结构 浸水时间 图像处理 定量分析 |
| 收稿时间： | 2018-07-19 |
| 修稿时间： | 2018-08-28 |
A quantitative study of microstructure of expansive soil based on IPP image processing |
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| Chaoqun,XI Yao,SUN Zhibin,GAO Keke.A quantitative study of microstructure of expansive soil based on IPP image processing[J].Hydrogeology and Engineering Geology,2019,0(2):156-156. |
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| Authors: | Chaoqun XI Yao SUN Zhibin GAO Keke |
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| Institution: | 1.School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, Anhui230009, China; 2.Shanghai Zhongliang Real Estate Group Limited Company, Shanghai200331, China |
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| Abstract: | The scanning electron microscope (ESEM) is used to obtain the scanning image of the microstructure of expansive soil under different soaking times. Based on the professional image processing software Image-Pro Plus (IPP), the ESEM images of the expansive soil are processed and analyzed. The apparent pore ratio, fractal dimension and composition of expansive soil under different soaking times are studied. The results show that the apparent pore ratio of the expansive soil increases gradually with the increasing soaking time, and its growth rate decreases gradually. The small island method is used to study the particle size and pore size of soil samples. The results indicate that the particles and pore of the expansive soil have obvious fractal characteristics, and the fractal dimension ranges from 1.1 to 1.3. With the gradual increase of the soaking time, the fractal dimension of the particles decreases, and the fractal dimension of the pores increases, and the two trend are opposite. The soil particles and the pore are classified as four groups of large (>5 μm), medium (2-5 μm), small (1-2 μm) and micro (<1 μm). Evolution of various types of particles and pores under different soaking times are also analyzed. |
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