摘要
采用自编软件对蒸发过程中不同含水率广西南宁膨胀土裂隙分布的数码拍摄图像进行了二值化处理和自动化分形统计,并结合膨胀土的现场渗透试验和变形模量测试,初步建立了土体裂隙分布与含水率、渗透系数及变形模量的关系。研究结果表明,二值化像素和分形维数统计的方法均是对膨胀土裂隙的平面描述,而渗透性和变形模量的演化性状可以描述膨胀土裂隙的发育状态,并能客观反映裂隙影响下膨胀土的工程性质。
The fissure digital picture of various water content expansive soils from Nanning, Guangxi during the progress of evaporation is treated by the method of two-value pixels. The automated statistic of fissure fractal dimension is also carried out by using programmed software in this paper. Moreover, combined with field permeability and deformation modulus test, the relationship of fissure dis- tribution, water content, coefficient of permeability and deformation modulus is initially established. The results show that the statistic of two-value pixels and fractal dimension depicts the fissure in view of plane, and evolvement behavior of permeability and deformation modulus can describe the developing state of expansive soil fissure, and reflect the soil engineering characteristic influenced by fissure objectively.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2009年第6期75-80,共6页
Journal of Wuhan University of Technology
基金
国家自然科学基金(10872210)
交通部西部交通建设科技项目(200631878530)
岩土力学与工程国家重点实验室资助项目(SKLZ0803)
关键词
膨胀土
裂隙率
分维
渗透性
变形模量
expansive soil
fissure ratio
fractal dimension
permeability
deformation modulus
