在施工地质差、营业线施工防护压力大的情况下,采用花管注浆的方法加固地基,用以改善既有线软土地基性质,减少和控制沉降,效果较好。本文以钻进过程、注浆过程、压力稳定为重点项目,以浆液配置,喷浆量为关键工序,重点编制。 Under the condition of poor construction geology and pressure of construction line protection, the method of pipe grouting is used to reinforce the foundation so as to improve the nature of the existing soft clay foundation and reduce and control the settlement, and the effect is better. In this paper, drilling process, grouting process, pressure stability as the key project to slurry configuration, shotcrete volume as the key processes, focusing on the preparation.