深基坑土方开挖及支护施工安全技术探讨

Discussion on Safety Technology of Earth Excavation and Support Construction of Deep Foundation Pit

在经济日新月异下,市民出行的交通工具也愈加多样化;基于我国提出的地下空间开发和利用战略,城市轨道交通已成为这个城市繁荣程度的定义标准;截止日前,我国轨道交通建设规模较大的城市主要有北京、上海、广州、深圳、武汉;轨道交通工程作为地下结构,深基坑土方开挖施工,确保基坑稳定性和周边构筑物安全性是施工的重难点,本文结合已有的地铁深基坑施工经验,深入分析了深基坑土方开挖及支护施工安全技术,旨在降低深基坑土方开挖突泥涌水、坍塌等风险,有效保障施工生产安全。

With the rapid development of economy,the means of transportation for citizens are becoming more diversified.Based on the development and utilization strategy of underground space proposed by China,urban rail transit has become the definition standard of urban prosperity.By the end of the day,the major cities with large-scale rail transit construction in China are Beijing,Shanghai,Guangzhou,Shenzhen,and Wuhan.Rail transit engineering is an underground structure,and deep foundation pit excavation is the most difficult point in the construction to ensure the stability of the foundation pit and the safety of surrounding structures.In this paper,combined with the existing construction experience of subway deep foundation pit,the safety technology of deep foundation pit earthwork excavation and support construction is analyzed in depth,aiming to reduce the risk of mud inrush and collapse of deep foundation pit excavation,and effectively guarantee the safety of construction and production.