结合广州地铁和深圳地铁的盾构工程实例，介绍盾构施工中的管片壁后回填注浆的多种类型并作了比较分析。
Based on shield construction in Guangzhou Metro and Shenzhen Metro, an introduction is given to various types of backfilling grouting behind segment, and a comparison was made.
实践证明采用注浆技术比采用回填等方法加固具有质量好，效率高、成本低等特点。
The fact shows that grouting technique has characters of better quality, higher efficiency and less cost compared with refilling method.
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