长江科学院院报2019，Vol.36Issue(12)：113-120,8.DOI:10.11988/ckyyb.20180532
基于非饱和蠕变模型的滑坡长期变形数值模拟
Numerical Analysis of Landslide’s Long-term Deformation Based on Creep Model of Unsaturated Soil
摘要
Abstract
The instability of most landslides is fundamentally a non-saturated creep process as on one hand, the landslide is usually in unsaturated state because landslide is directly related to the effect of water, and on another, the landslide deformation is rheological. Taking the coupling effect of seepage and creep into consideration in nu-merical simulation will better reflect the mechanism of landslide deformation. First of all the nonlinear creep model of unsaturated soil and its three-dimensional form acquired in previous researches of our team are verified through experimental data. Since commercial finite element programs do not provide unsaturated creep model for specific soil mass, a finite element program is developed for seepage and creep coupling. The program is used for modeling the deformation of Shuping landslide under the effect of reservoir water level fluctuation. Results show that the cal-culation results are close to the actual deformation monitoring values, indicating that the creep model established in this paper is reasonable, and the program is reliable, which can be applied to the estimation of long-term deforma-tion of landslide.关键词
滑坡/长期变形/非饱和土/渗流/非饱和蠕变模型/有限元/树坪滑坡Key words
landslide/long-term deformation/unsaturated soil/seepage/creep model/finite element/Shuping landslide分类
建筑与水利引用本文复制引用
王力,王琳,王世梅,郭飞,邹良超..基于非饱和蠕变模型的滑坡长期变形数值模拟[J].长江科学院院报,2019,36(12):113-120,8.基金项目
国家自然科学基金面上项目(41372359) （41372359）
三峡大学人才专项经费(8000303) （8000303）
中国地质调查局项目(DD20190638,DD20190716) （DD20190638,DD20190716）
