分析了深基坑工程的主要特点,阐述了基坑工程支护的原则,并从放坡开挖、桩锚式支护结构、地下连续墙支护结构等方面,介绍了现阶段常见的基坑支护形式,并总结了各种支护形式的特点,有助于支护方案的合理选择,从而保证基坑工程的安全施工。 This paper analyzes the main features of deep foundation pit engineering, expounds the principle of foundation pit engineering support, and introduces the common base at this stage from the aspects of grading and excavation, pile-anchor supporting structure and supporting structure of underground continuous wall. Pit support form, and summed up the characteristics of a variety of support forms, contribute to the reasonable choice of support program, so as to ensure the safe construction of foundation pit project.