Analysis of displacement and stress of cutoff wall under action of filtration field and stress field
Shu Hu · Water Resources & Hydropower of Northeast China · 2007
The filtration field and stress field coupling calculation model is established according to storage process of plain reservoir and geologic structure characteristics. The analysis of stress and displacement in the cutoff wall under coupling action of filtration field and stress field with the finite element method is conducted. The result indicates that the permeability coefficient of soil mass reduces of 10%. The horizontal displacement of cutoff wall top varies from directional upstream to directional downstream. The primary maximum principal stress σ1 of cutoff wall increases of 27.8% , the tertiary muximum principal stressσ3 increases of 16%,therefore,the calculation result under coupling action of filtration field and stress field is unfavourable to the stability of cutoff wall.