A new controlled drainage system for submarine tunnels using double-adhesive waterproof membrane  

作　　者：Xiaohe SUN Chenghua SHI Guoqing XIAO Yangyang GE 

机构地区：[1]School of Civil Engineering,Central South University,Changsha 410075,China [2]PowerChina ZhongNan Engineering Corporation Limited,Changsha 410014,China [3]State Key Laboratory of Special Functional Waterproof Materials,Beijing Oriental Yuhong Waterproof Technology Co.,Ltd.,Beijing 101111,China

出　　处：《Frontiers of Structural and Civil Engineering》2025年第2期194-206,共13页结构与土木工程前沿(英文版)

基　　金：supported by the Fundamental Research Funds for the Central Universities of Central South University(No.2023ZZTS0183);the Fundamental Research Funds for the Central Universities(No.502802002).

摘　　要：Traditional submarine tunnels with drainage systems are highly susceptible to water leakage,which is challenging to locate and manage,leading to high maintenance costs.To address this problem,a new controlled drainage system for submarine tunnels was proposed in this study.The system utilizes a double-adhesive waterproof membrane instead of traditional waterproof sheets,which not only reduces the likelihood of leakage but also makes subsequent leak detection and repair easier.In addition,replacing blind pipes with drainage sheets significantly improves the clogging resistance of the drainage system.The influence of grouting circles and drainage sheets on the water inflow and the external water pressure on the lining was then analyzed using numerical calculation methods.Finally,the design process of the new controlled drainage system was proposed.The research suggests that the new system allows for a multi-stage control method using grouting circles and drainage sheets,providing greater design flexibility.In the primary control stage,grouting circles effectively reduce the tunnel water inflow and the external water pressure on the lining,with the permeability coefficient playing a crucial role.In the secondary control stage,the spacing and width of the drainage sheets can regulate the water inflow and pressure.Unlike grouting circles,drainage sheets decrease water pressure while inevitably increasing water inflow,and vice versa.These findings can serve as a valuable reference for the design of waterproof and drainage systems in submarine tunnels.

关 键 词：submarine tunnel spray-applied waterproofing membrane drainage system numerical simulation design process 

分 类 号：TG1[金属学及工艺—金属学]