富水隧道分区减压防排水技术研究

Research on the Subarea Relaxed Defense-drainage Technology of Tunnel with Abundant Underground Water

富水隧道的水害一直是隧道难以根治的病害之一,严重影响隧道的施工和正常运营,因此,隧道防排水处理技术一直受到工程界的关注。采用理论与实践相结合的方法,分析了隧道水害问题的工程原因和比较了隧道常用防排水技术的特点,在此基础上,结合多年的工程经验,提出了一套适合富水隧道防排水的分区减压排水新技术措施,并通过工程现场实际应用证明了该措施的有效性,较传统的防排水方法更能有效地防治由于排水不畅或水压过大而导致隧道出现渗漏水的现象,降低了地下水对隧道的影响,节约了工程成本。

The water disaster of tunnel treatment tunnel diseases, which serio with abundant underground water was always one of the difficult usly affected the construction and work of tunnel, that was the reason why the defense-drainage technic was always attended by the engineers. This paper used the theory and practice method to analyze the engineering reasons of the water disaster and compare the characteristics among the frequently-used defense-drainage methods. On the basis of this study and combined the practices for many years, this paper proposed a new technic method named Subarea Relaxed Defense-drainage Technology. The application of the new technic method to the project proved the availability, and it indicated that the new method can more availably prevent the water disaster caused by the poor drainage or super water press than the frequently-used methods, and that reduces the damage of the underground water to tunnel, which saves the cost of project.