TAM管注浆止水帷幕作用分析

以澳门轻轨妈阁站项目为依托，建立止水帷幕渗流模型，分析不同深度TAM管注浆止水帷幕对于基坑止水和支护的作用。结果表明:随着止水帷幕深度的增加，坑底渗流速度减小，20 m深的止水帷幕使坑底渗流速度在最终开挖阶段降低了73.7 %；止水帷幕有减小支护结构侧移的作用，20 m深的止水帷幕使支护结构侧向位移在最终开挖阶段降低了94.6 %。

Action Analysis of TAM Pipe Grouting Water-stop Curtain

Based on the Macau Light Rail Mage Station project, the seepage model of water-stop curtain was established, and the effect of TAM pipe grouting water-stop curtain with different depth on the water stop and support of foundation pit was analyzed. The results show that: as the depth of the water-stop curtain increases, the seepage velocity at the bottom of the pit decreases. The seepage velocity at the bottom of the pit decreases by 73.7 % at the final excavation stage with the water-stop curtain at a depth of 20 m .And the water-stop curtain has the effect of reducing the lateral displacement of the supporting structure, and lateral displacement of the supporting structure is reduced by 94.6 % at the final excavation stage with the water-stop curtain at a depth of 20 m.