[提要]  研究了采用极限平衡理论对土钉支护结构进行内部和外部整体稳定性分析的计算方法，给出了相关的算式，该法已编制成计算机设计软件，并在实际工程中广泛使用。文末给出了工程应用实例。
[关键词]  土钉支护  极限平衡法  内部整体稳定性  外部整体稳定性

A calculation method for internal and external stability of soil nail retaining structure with limit equilibrium theory is discussed. The method was incorporated into a software which has been practically used in a number of projects. An application case is also illustrated.
Keywords: soil nailing; limit equilibrium method; internal stability; external stability