Study on finite elements applied to different geological models of foundation pit dewatering

As analyzing the interaction of water-soil coupling field, we take soil mass as elastoplastic material. Based on nonlinear constitutive relation, the finite element equation of rock considering seepage field can be obtained. The 3-D water-soil coupling mathematical model about dewatering of foundation pit is established; and the different geological model such as groundwater bearing bed, artesian aquifer water bearing bed and exceed flow alimentation artesian aquifer water bearing bed and every engineering condition such as embedded depth of filter tube and depth of stop water heavy curtain are calculated and treated. Taking the International Stock Exchange Hotel in Wuhan for example, the dewatering process of foundation pit is calculated by 3D finite elements. The three-dimension numerical simulation method can be applied to model impervious curtain, anisotropy and non-homogeneous, confined-unconfined water in practical engineering conditions and geological model, which are hard to solve in analytical method.