摘要：为满足南水北调中线工程穿黄隧洞盾构施工工法要求，对研制开发的水泥-膨润土-水玻璃系双液塑性壁后注浆材料，通过室内模拟注浆试验，重点探讨了材料组分对注浆材料流动性、稳定性、凝胶特性、强度等性能的影响。结果表明：凝胶时间可控制在10s左右；不同配比注浆材料1h单抽抗压强度为0.08-0.12mpa，28d为7.81-8.52mpa；渗透系数为2.0×10-8cm/s；模拟注浆时浆液不被水稀释，充填良好；且不会对地层产生劈裂，也不会向开挖掌子面渗漏。

关键词：盾构；南水北调中线；穿黄隧道

中图分类号：tv68；tv41 文献标识码：b 文章编号：1672-1683（2008）01-0028-05

grouting experiment of shield tunnel crossing yellow river in middle route of the south-to-north water diversion project

su hua,li zhen,wang zai-qin

(department of structure and materials,yangtze river scientific research institute,wuhan 430010,china)

abstract:to meet construction requirement of shield tunnel crossing yellow river in the middle line of south-to-north water diversion p