钻探工程2024，Vol.51Issue(5)：163-168,6.DOI:10.12143/j.ztgc.2024.05.020
富水粉细砂层盾构接收端头补充注浆加固技术研究及实践
Research and practice of grouting reinforcement technology for the receiving end of shield tunneling in water-rich fine sand layers
摘要
Abstract
The strata where the receiving end of air shaft shield is located in a subway section of the North China Plain is mainly silty clay,clayey silt and silty fine sand from top to bottom,with high underground water level and strong liquidity.After being reinforced by high-pressure rotary jet grouting at the receiving end,it was found that there is still a risk of water and sand inrush using horizontal exploration holes.The water and sand surging is easy to happen in the gap between the tunnel doors when the cutterhead of the shield tunneling machine break through the tunnel door.To ensure the shield machine smoothly passing out of the tunnel,the method of surface sleeve valve pipe grouting is adopted,and the GX modified silicon grouting material is used to consolidate the fine sand.Targeted reinforcement grouting is carried out in the receiving end of the interval air shaft within the water-rich fine sand formation.After treatment by such technology,the shield machine successfully excavated without any water or sand inrush.关键词
地铁盾构/接收端头/袖阀管注浆/GX改性硅灌浆料/补强加固/富水粉细砂层Key words
subway shield tunneling/receiving end/sleeve valve pipe grouting/GX modified silicon grouting material/reinforcement/water-rich silty fine sand layer分类
交通工程引用本文复制引用
孙思施,李乔斌,钟久安,臧鹏..富水粉细砂层盾构接收端头补充注浆加固技术研究及实践[J].钻探工程,2024,51(5):163-168,6.基金项目
四川省科技计划产业示范项目"地下工程水害综合治理技术服务示范项目"(编号:2021GFW074) （编号:2021GFW074）
