基于微焦点X-CT技术的压实土内部均匀性判断  

Internal Homogeneity Judgment of Compacted Soil Based on Micro-focus X-CT Technique

作　　者：李春苗 梅军[1] 李敏[1] LI Chun-miao;MEI Jun;LI Min(Geo-engineering Investigation Institute of Jiangsu Province,Nanjing Jiangsu211102 China)

机构地区：[1]江苏省地质工程勘察院,江苏南京211102

出　　处：《江苏建筑》2022年第5期92-94,共3页Jiangsu Construction

摘　　要：通过微焦点X-CT技术扫描获取了同一压实土样9个不同层位的微结构图像,借助于MATLAB软件对图像进行了高、低帽变换增强处理和阈值化分割处理。利用IPP软件强大的尺寸测量和计数分类统计功能,测量了试样9个不同层位颗粒单元体和孔隙的平均面积、平均直径、平均周长等微结构参数,对压实土内部不同层位颗粒单元体和孔隙的形态特征进行了统计分析。结果表明,同一压实土样,各层位颗粒单元体和孔隙的平均面积、平均直径沿试件高度方向变化均不大,但平均周长的变化较为明显。Internal structure image for nine different layers of the same compacted soil were obtained by microfocus X-CT technique,by means of MATLAB software the images were processed using high and low cap transformation enhancement and thresholding segmentation.Micro-structural parameters in nine different layers such as average area,average diameter and the average circumference of granule cell body and pore were measured IPP software because of its powerful size measurement and counting statistics function.Morphological characteristics of granule cell body and pore for different layers inside the compacted soil was counted and analyzed.The results show that,the morphology of granule cell body and pore inside the compacted soil showed irregular variation along the specimen height direction,the average circumference changed obviously.

关 键 词：微焦点X-CT 压实土 均匀性 

分 类 号：TU411[建筑科学—岩土工程]