向莆铁路青云山隧道F_9断层帷幕注浆施工技术应用

Application of Curtain Grouting to F_9 Fault of Qingyunshan Tunnel on Xiangtiang-Putian Railway

帷幕注浆技术是封堵断层带涌水的有效措施,该方法技术标准高、施工工艺复杂、工期较长、成本较大,如果在实施处理过程中稍有不慎,对涌水封堵效果会带来遗留问题,甚至造成二次封堵返工。文章结合向莆铁路青云山特长隧道F9断层带帷幕注浆封堵涌水工程的实践,对其施工工艺作了详细介绍,注浆效果检查浆液充填饱满,单孔渗水量符合设计要求,可供类似工程参考借鉴。

Curtain grouting is an effective way to block the water coming from fault,which is characterized by high technical standard,complex construction technology,long construction period and high cost.The effect of water blocking will be affected if it is not cautious enough during the implementation of curtain grouting,even resulting in rework of water blocking.The construction technology of curtain grouting is presented in detail by taking the practice of water blocking taken in F9 fault of Qingyun tunnel on Xiangtiang-Putian railway.The test of grouting effect shows that the grout filling is full and the water seepage from single bore complies with the designed requirement.