摘要
对含有各种大孔隙的原状土柱和已知直径大孔隙的填充土柱进行CT扫描实验 ,阐明CT扫描原理和过程 ,对CT图像进行处理 ,得到大孔隙数目、大小、形状和连通性在土柱横断面和纵断面上的分布。采用图像处理软件Photoshop、地理信息系统软件ARC/INFO和Mapinfo分析结果表明 :CT扫描是一种有发展前景的、非破坏性的确定土壤大孔隙分布的方法。
Undisturbed soil core which has many macropores and disturbed soil core which has macropore(its diameter is known) are probed by CT. The theory of CT scanning is stated.CT scanning images are dealt with by using software photoshop and geographical information system software ARC/INFO and Mapinfo.The size, number, shape and continuity of macropores in transverse and vertical section of soil are characterized. The results indicate that CT scanning is a nondestructive method for characterizing macropores in soils, which is a promising method.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2002年第5期611-617,共7页
Advances in Water Science
基金
国家自然科学基金资助项目 (5 97790 2 2 )~~
