Abstract:SThe dynamic response of slope blasting excavation is a complex problem in engineering evaluation, calculation and analysis, especially the response spectrum theory which is commonly used in calculation and analysis has many shortcomings after many years of practice. In this paper, the time-history analysis method is used to analyze the impact of blasting construction of high slope in an intelligent product park on the safety of adjacent water supply tunnel. The generalization method and establishment method of slope blasting calculation model are given. The results show that it is feasible to use numerical method to analyze the impact of blasting construction on the safety of adjacent structures. The impact of blasting construction is calculated and analyzed by using three-dimensional solid model, and on this basis, the vibration reduction measures to reduce the impact of blasting vibration on the existing structure are analyzed and studied, which can provide reference for similar projects.With the development of economy and society, surrounding environment of the deep foundation pit has become increasingly complex, deep foundation pit excavation analysis of effects on the surrounding environment is increasingly important. In this paper, based on a deep foundation pit in Shanghai soft soil area, finite element software PLAXIS is used to simulated the affect of excavation to the surrounding environment, and then soil parameters which is back-analysis through on-site monitoring data, is used to established model to predict conditions for subsequent calculations, the results of the comparative analysis between predicted value and the on-site monitoring value, show the numerical inversion model is reasonable and reliable, and provides a useful reference for other engineering of deep foundation pit in soft soil area such as Shanghai.
