福州市金鸡山隧道衬砌水害调查与原因分析

Disease investigation of water seepage for Jinjishan Tunnel

隧道作为一种常见的地下结构形式,受地质条件、设计施工和运营环境的影响,在其服役寿命中后期常出现不同程度的病害,从而影响隧道内行车舒适性和安全性。本文以福州市二环路金鸡山隧道衬砌结构病害检测为背景,对其衬砌表面的水害呈现形式、水害发生部位和最大出水量进行了详细的调查统计,分析了衬砌表面水害产生的原因,并对类似工程的水害防治提出建议。

Highway tunnels, as the common form of underground structure, are often attacked by many geological, construction and operating factors. Some diseases often occur in the lining structure during the middle - term or later - term of tunnels＇ service life, which takes a seri- ous effect on the operation comfort and safety of highway tunnels. Based on the disease investigation of lining structure for Jinjishan Tunnel in Fuzhou 2nd ring road, the statistics about the forms, the positions and the maximum volumes of water seepage upon the lining structure are carefully investigated. The reasons for these water seepage diseases are also analyzed generally. It can provide some reference for the dis- ease treatment of water seepage for Jinjishan Tunnel, as well as some other projects in similar scenario.