针对某高速公路特长隧道施工过程中底板涌水的现象,对涌水原因进行了分析,提出了注浆堵水施工原则和注浆治理方案,取得了良好效果,值得推广应用。 Aiming at the phenomenon of gushing water in floor during the construction of a special long tunnel of expressway, the reason of gushing water is analyzed. The principle of grouting and water blocking construction and the grouting treatment scheme are put forward. The good results are achieved and it is worth to be popularized and applied.