Topology intelligence computation of 3D seepage of landslide in the Three Gorges reservoir area

Abstract

Reservoir water fluctuation and rainfall are the main factors to trigger landslides in the Three Gorges reservoir area. It is the key to study the landslide three-dimensional seepage under reservoir water fluctuation and rainfall for landslide stability evaluation, disasters prevention and reduction. We investigated the Lijiawan Landslide in the Three Gorges reservoir, Badong Country, Hubei Province, China. And propose a Topology intelligence method to calculate the Three­ dimensional seepage of the landslide. In order to calculate rapidly, we developed a computer program by Visual Basic, which combined the ANSYS, the Finite Element Analysis software, and FLAC3D, the Finite Difference Simulation software. And that achieved the Three-dimensional seepage fast calculation with the effect of reservoir water fluctuation and rainfall. The method avoids complex calculation of fluid-solid coupling in simulation. And the characters of the calculating seepage match to other landslide groundwater monitoring data and pre-existing research. That proves the Topology intelligence method can achieve the Three-dimensional seepage calculation of landslide. It will be utilized by the landslide assessment and deformation analysis in the Three Gorges reservoir area. Keywords-bank landslide;three dimensional seepage; topology calculation;reservoir water fluctuations;rainfall