Research on Pre-grouting Strengthening Technology of Shallow and Large Section Metro Tunnel through Fault Fracture Zone

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Guo, Yanxu^1 ; Wang, Xiaochen^1 ; Liu, Haojie^1 ; Liu, Ya-Nan^1 ; Ma, Chenyang^1 ; Li, Zhipeng^2 ; Li, Wei^1 ; Li, Kexian^3 ; Zhang, Jianwei^3 ; Chen, Jian^4 ; Wei, Yishan^4 ; Li, Baozhi^4

Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan

250061, China^1

School of Transportation and Civil Engineering, Shandong Jiaotong University, Jinan

250357, China^2

Qingdao Metro Line One Line Limited Company, Qingdao, Shandong

266000, China^3

Third Harbor Engineering Co. Ltd., Nanjing, Jiangsu

210000, China^4

关键词: Aluminate cement;    Crossing faults;    Fault fracture zones;    Grouting methods;    Ordinary Portland cement;    Pre-grouting;    Safety and stabilities;    Strengthening technologies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/5/052057/pdf
DOI  :  10.1088/1755-1315/189/5/052057

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Through the pre-grouting engineering practice of F1 fault fracture zone in People's Hall Station of Qingdao Metro Line 4, the research on the pre-grouting Strengthening Technology of shallow and large section metro tunnel through fault fracture zone is carried out, and the effective means to control the crossing fault fracture zone of the shallow and large section metro tunnel are explored. The results show that it is an effective method to treat the collapse of fault fracture zone by using the combined grouting method of first detection and grouting, and the combination of surface grouting and tunnel grouting in the shallow and large section metro tunnel. For the fault fracture zone near the sea, in order to prevent the continuous erosion of seawater ions to fault fracture zone and station structure, the cement-water glass and sulpho-aluminate cement materials can be considered on both sides of the station, and ordinary portland cement and sulpho-aluminate cement can be used in the middle of the station to ensure the safety and stability of the station, which also could reduce the cost of construction as much as possible.