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近两年，国内在高层建筑深基坑开挖的围护结构中，开始采用喷锚支护技术。该技术具有施工周期短，设备简单，工程造价低，边坡受力条件改善，加固效果显著等优点。本文概述了喷锚支护理论，并结合工程实践介绍喷锚支护设计和施工的若干问题，其中深基坑多层锚杆支护结构内力计算表具有合理、实用、简便的特点，易于设计人员接受。
In the past two years, spray-anchored support technology has begun to be used in the protection of deep foundation pit excavation in high-rise buildings in China. The technology has the advantages of short construction period, simple equipment, low construction cost, improved conditions of slope stress, and significant reinforcement effect. This article outlines the theory of spray-anchor support and combines the engineering practice to introduce several problems in the design and construction of spray-anchor support. Among them, the internal force calculation table of multi-layer bolt support structure for deep excavation is reasonable, practical and simple, and easy to design. Personnel accepted.