阐述环形开挖预留核心土法在羊台山隧道浅埋段开挖中的应用，重点介绍通过对环形开挖预留核心土法进行适当改进后的施工工艺，进一步说明改进后的工法优点及适用范围，供广大工程技术人员参考。

The application of corekeeping ring cut method in the excavation of the shallowburied section of Yangtaishan tunnel is presented, with the emphasis being placed on the presentation of the construction techniques of the optimized corekeeping ring cut method. The advantages and application scopes of the optimized corekeeping ring cut method is also presented. This paper can provide reference for tunneling colleagues.