北京地铁暗挖隧道注浆止水和加固技术分析

On analysis of ejection for water and consolidation technique of subsurface tunnel in Beijing Metro

以北京地铁暗挖隧道施工为工程背景,结合当地地质条件,决定采取袖阀管深孔注浆和前进式注浆工艺相结合的施工方案对隧道周围土体进行加固,经数值分析可知加固效果较为显著,从而确保了隧道施工质量。

Based on the subsurface tunnel construction of Beijing Metro as the engineering background,the study adopts the construction scheme combining the deep-hole grouting with sheathed pipe and the marching grouting craft to undertake the consolidation on the tunnel surrounding earthwork by combining with the current geological conditions,and proves by the numeric analysis that the consolidation effect is obvious,so the method ensures the tunnel construction quality.