结合北京站至北京西站地下直径线工程实例，通过不同盾构刀盘刀具配置在砂卵石下的应用对比，重点对工程刀盘刀具改造前后对地层的适应性进行了详细的对比分析，提出了砂卵石条件下刀盘刀具配置应注意的关键问题，对类似工程有借鉴作用。

Based on the underground diameter line engineering experience from Beijing railway station to Beijing railway west station, through the application contrast of various cutter tool configurations under sandy gravel, a detailed comparative analysis of cutter tool adaptability was done focusing before and after transformation. The key issues were proposed about cutter tool configuration under sandy gravel, which can be reference to similar projects.