摘要
为了对膨胀土的裂隙进行定量分析,利用远距光学显微镜对膨胀土试样进行观测,观测的图像经图像处理软件进行合适的灰度处理,计量裂隙所造成的暗色区域所占面积比例或灰度熵。通过对重塑膨胀土中的裂隙发展变化进行动态、定量的观测,认为裂隙图像的灰度熵可以较好地表征裂隙的发育发展程度,且土体处于裂隙不发育状态,其灰度熵越小,反之,土体裂隙越发育,其灰度熵越大。
The methods used for quantitatively observing expansive soils' fissures are summarized and evaluated. Dynamical and quantitative observations are carried out on fissure variations by longdistancemicroscopesystem. The results show that the gray level entropy of observed pictures can reflect the extent of fissures growth well and be suitable to use as an index to describe fissures in expansive soils.
出处
《长江科学院院报》
CSCD
北大核心
2003年第6期27-30,共4页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金资助项目(50279008)
关键词
膨胀土
裂隙
远距光学显微镜
灰度熵
expansive soil
fissure
longdistancemicroscopesystem
gray level entropy
