截水井结合化学灌浆在TBM掘进施工中的应用

Application of intercepting well combined with chemical grouting in TBM tunneling

本文针对东山供水工程9号隧洞段,在砂卵石地质条件下TBM施工出现涌水问题采取的处理措施进行了定性分析论述,包括截水井的施工、化学灌浆材料及施工方法等。截水井结合化学灌浆的施工措施在处理TBM施工涌水问题时效果较好,使涌水变为渗流,可为TBM施工中的类似地质条件下的涌水问题处理提供一定参考。

This paper qualitatively analyzes and discusses the treatment measures of water gushing in TBM construction of No.9 tunnel of Dongshan Water Supply Project under sand and cobbly geological conditions,including the construction of water intercept,chemical grouting materials and construction methods.The construction measures of intercepting well combined with chemical grouting are effective in treating the water inrush problem in TBM construction,and the water inrush becomes seepage,which can provide a certain reference for the treatment of water inrush problem in TBM construction under similar geological conditions.