长江科学院院报2016，Vol.33Issue(6)：79-82,4.DOI:10.11988/ckyyb.20150170
三峡库区某滑坡土非饱和松弛特性试验研究及模型建立
Study on Unsaturated Relaxation Properties of Soils of a Landslide in the Three Gorges Reservoir Area and Model Construction
摘要
Abstract
In order to obtain influence of matric suction on relaxation properties of unsaturated soil, we conduct stress relaxation tests of unsaturated soil of a landslide in Three Gorges Reservoir area by using GDS triaxial appara⁃tus. Exponential function, logarithmic function and power function are selected for curve fitting. Through compara⁃tive analysis, power function is selected as the relaxation model as it has maximum fitting accuracy, and the model parameters under different matric suctions are obtained. The correlations between matric suctions and model parame⁃ters are analyzed, and function relationships are built. The function relationships are substituted into the relaxation model equation and a relaxation model that can reflect the effect of matric suction of unsaturated soil is obtained.关键词
滑坡/非饱和土/基质吸力/松弛模型/松驰特性Key words
landslide/unsaturated soil/matric suction/relaxation model/relaxation properties分类
天文与地球科学引用本文复制引用
刘佳龙,王世梅,胡秋芬,郭振..三峡库区某滑坡土非饱和松弛特性试验研究及模型建立[J].长江科学院院报,2016,33(6):79-82,4.基金项目
国家自然科学基金项目 （）
