The Influence Of Pit Excavation Of Guizhou Mountainous Area On Its Surrounding Environment

The Foundation Pit Engineering incorporates the geotechnique and structure Engineering into an organic integrity influenced by many factors. The problem of the Foundation Pit Engineering lies not only in the safety and stability of foundation, but also in the danger of the neighboring buildings, underground pipes, municipal equipment due to the displacement of stratum under excavation. It is the key to the success of foundation pit design that whether the displacement of the foundation and surrounding soils can be forecasted and controlled.Taking advantage of computer, this article adopts large finite element method programe Ansys8.0 to analyze, the influence of pit excavation of Guizhou mountainous area on its surrounding environment. The model adopts Drucker-Prager ideal elastic-plastic stress-strain model; soil body uses eight-nodes isoparametric heaxhedrite element, anchor ropes use space link element, and piles use beam element.This article describes deforming regularity of pit excavation in two deferent retaining structure (piles and coaction of piles and anchor ropes). So the stress field and displacement field after pit excavation are to be fixed. And the lateral displacement curve of the foundation slope, the settlement range and value of the surrounding ground are also to be calculated.This study is hoped to make a guidable role in designing the excavation and be a reference to the research of the influence to surrounding environment by deep excavation. Therefore we may fit the information construction process and optimum design.