大瑞铁路大柱山隧道燕子窝断层集高压富水、大型岩溶、超长断层、异常破碎等特点于一体，采用常规注浆工艺已无法通过，经长期多方案比选，最终采用“远排近堵，超高压分段聚合注浆”工艺施工，得以安全顺利通过。%Darui railway Dazhushan tunnel Yanziwo fault sets the high-pressure water-rich, large karst, long fault and broken abnormal features in one, so the use of conventional grouting technology is not suitable. Through the comparison of multi-program in long term, the construction technology of "outside-drainage and inside-plugging and ultrahigh pressure section grouting" is finally adopted and succeeded.
展开▼
