广州地铁动水砂层注浆施工技术

Grouting Construction Technique for Water Mobile Sand Layer in Guangzhou Metro

以广州地铁杨箕站—体育西部站区间隧道动水砂层注浆施工为研究对象，通过注浆方案比选、注浆材料的确定、注浆施工工艺的研究开发，注浆效果的检查以及地表沉降的控制，成功地解决了动水砂层中施工困难的问题，为隧道开挖顺利通过该地层提供了技术保证。

Grouting construction for the water mobile sand layer in Yangji Station West Tiyu Road section tunnel of Guangzhou Metro is studied.The problem that it is difficult to do constrution works in the water mobile sand layer is successfully settled by means of comparing and deciding grouting schemes,choosing grouting materials,researching and developing grouting construction,technigues,checking grouting effect and controlling surface settlement,which offers technical garantee for the successful excavation of the tunnel through the sand layer.