不同地下水位条件下基坑开挖对周围环境影响的数值模拟分析

Numerical Simulation Analysis of the Impact of Excavation on the Surrounding Environment under Different Groundwater Level Conditions

摘要: 为研究地下水位不同时，基坑开挖对地表周围环境的影响，本文通过数值模拟的方式，将实际工程中分层土体开挖不同类型的基坑时对周围环境的影响作为研究对象，建立了复杂工况下基坑开挖过程的数值分析模型。对比不同水位条件下，两种不同基坑开挖过程中地表沉降和应力分析。结果表明地下水位不同时，对基坑开挖的施工影响较大，不同类型基坑开挖也对施工时对周围环境有较大影响。本文研究成果可为地铁车站基坑开挖施工方法选择、施工风险评估及优化设计提供重要参考依据。

Abstract: To investigate the impact of excavation on the surrounding surface environment under different groundwater levels, this study employs numerical simulation to analyze the effects of excavating different types of pits in layered soil conditions in actual engineering projects. A numerical analysis model for the excavation process under complex conditions has been established. The study compares the surface settlement and stress analysis of two different types of excavation processes under varying groundwater levels. The results indicate that different groundwater levels significantly impact excavation construction, and different types of excavation also have a substantial effect on the surrounding environment during construction. The findings of this study provide important reference criteria for selecting excavation construction methods, assessing construction risks, and optimizing designs for subway station excavation projects.