水泥袋灌浆支撑是治理海管悬空的一种有效方式，具有治理效果好、操作简单、成本低等优点。以某平台立管鹅头悬空治理项目为切入点，详细介绍水泥袋灌浆支撑技术治理海管悬空方法，主要包括水泥灌浆设备介绍、技术实施方案、技术要点难点分析三方面，为后续从事相关作业者提供参考。

Pipe grouting technology is an effective method for the free span of submarine pipes, which has the advantages of good treatment effect, simple operation and  low cost.This paper takes the riser gooseneck free span control project of a platform as an example, and makes detailed introduction of cement bag grouting support technology for submarine pipe free span control. It mainly includes the introduction to cement grouting equipment, technical construction plans, and technical difficulties, providing reference for follow-up readers engaged in related construction operations.