Response of operating metro tunnels to compensation grouting of an underlying large-diameter shield tunnel:A case study in Hangzhou

作     者：Xiaolu Gan Jianlin Yu Xiaonan Gong Yongmao Hou Nianwu Liu Min Zhu 

作者机构：Research Center of Coastal and Urban Geotechnical EngineeringZhejiang UniversityHangzhou 310058China Engineering Research Center of Urban Underground DevelopmentZhejiang UniversityHangzhou 310058China Shanghai Tunnel Engineering Co.Ltd.118 Dalian RdShanghai 200082China School of Civil Engineering and ArchitectureZhejiang Sci-Tech UniversityHangzhou 310018China College of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China 

出 版 物：《Underground Space》 (地下空间（英文）)

年 卷 期：2022年第7卷第2期

页      面：219-232页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：support from the National Natural Science Foundation of China(Grant Nos.51778575) the Zhejiang Provincial Science and Technology Department(Grant Nos.2019C03103) the Science and Technology Committee of Shanghai Municipality(Grant Nos.16QB1403400) 

主　　题：Grouting treatment Shield under-crossing Large-diameter shield tunnel Tunnel settlement 

摘      要：Due to the shield tunneling underneath,long-term settlements may develop in the existing metro *** compensation grouting is applied worldwide to stabilize the settlement of ground and existing *** field studies concerning large-diameter shield pass-ing tunnel from below have analyzed the interaction between the compensation grouting and the existing *** paper presents a case study on the response of the operating metro tunnels to the compensation grouting of an underlying large-diameter tunnel in muddy clay *** tunnel deformations before,during,and after the compensation grouting were monitored and *** long-term tunnel settlements were mitigated and stabilized by the timely compensation *** settlement rates were observed during the grouting treatment,and the settlement was gradually stabilized three months after the *** grouting holes at the tunnel invert were used initially for better grouting *** horizontal displacement and convergence developed during the grouting construc-tion and remained stable after the grouting ***,some limitations of the grouting treatment were *** tunnel settlement in the section close to the center-line of the south-line tunnel cannot be prevented *** differential displacement cannot be reduced by this grouting program.