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胶州湾海底隧道是我国自行设计建造的第二条海底隧道,其设计服役寿命为100年。选择阳极梯监测地下水和盐雾中氯离子在混凝土中渗透过程,选择环形电极监测混凝土中水分迁移。通过传感器数据分析,获得海底隧道混凝土结构的耐久性能。阳极梯预埋在隧道海域段Ⅵ级岩石破碎带的喷射混凝土和衬砌混凝土中,以及隧道出入口。环形电极采用后装法安装在海域段最深处Ⅵ级围岩区和隧道出入口的衬砌混凝土中。通过安装初期和运行1年后的耐久性监测数据分析表明,传感器工作良好,且隧道混凝土结构耐久性能良好。
The Jiaozhou Bay Cross-Harbor Tunnel is the second undersea tunnel designed and built by China. Its service life of design is 100 years. Anode ladders were selected to monitor chloride infiltration in groundwater and salt spray in concrete. Ring electrodes were selected to monitor water migration in concrete. Through the sensor data analysis, obtain the durability performance of the submarine tunnel concrete structure. The anode ladder is embedded in the shotcrete and lining concrete of grade Ⅵ rock fracture zone in the sea area of the tunnel and the entrance and exit of the tunnel. The ring electrode is installed in the lining concrete of Ⅵ grade surrounding rock area and tunnel entrance and exit by the way of afterloading. Analysis of the durability monitoring data after the initial installation and one year after operation shows that the sensor works well and the durability of the tunnel concrete structure is good.