Study coupled problem of stress - seepage on the deep foundation pit

According to the deep excavation engineering practice, Establishes a fully coupled seepage and stress model considering the permeability coefficient of nonlinear coupled response. Through the examples of foundation pit engineering, numerical analysis is carried out using MATLAB software for foundation pit excavation process and the seepage field distribution of excavation the horizontal displacement and the vertical displacement distribution of foundation pit supporting measures are obtained. Numerical results compare with the measured results, research shows that: Calculation results and values are matching as considering the permeability coefficient of coupled response. So the model considering fully coupling response of permeability coefficient is reliable and applicable. The coupled model can reflect a real foundation seepage and deformations, Calculation results can provide the correct reference for engineering design and construction.