地铁富水粘土地层隧道双重管注浆加固技术研究

Research on Grouting Reinforcement Technology-rich Underground Water Clay Formations Double Tube Tunnel

大连地铁一期工程210标段中华广场站—千山路站区间隧道开挖期间遇富水粘土地层,粘土经水长期侵泡,呈泥状,流动性强,易造成掌子面涌泥险情,施工难度较大。在尝试多种处置措施后,创新性的提出采用洞内双重管注浆方案,对掌子面前方富水地层进行加固,取得了良好效果。

Dalian Metro Project 210 tenders China Square Station-Qianshan Road station during tunnel excavation in case of water-rich strata of clay, clay with water soaked long, was mashed, great mobility, can easily cause the tunnel face Chung mud danger, construction difficult.After trying a variety of measures to deal with the proposed uses innovative dual pipe grouting hole program on the working face in front of the water-rich strata reinforcement, achieved good results.