Engineering practice of surface grouting treatment through soft surrounding rock stratum by TBM

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Xiaochen, Wang^1 ; Yanxv, Guo^1 ; Weiwei, Han^2 ; Yanan, Liu^1 ; Honglu, Yang^1 ; Kexian, Li^3 ; Guangxuan, Zhu^1 ; Chen, Jian^4 ; Wei, Yishan^4 ; Li, Baozhi^4

Geotechnical and Structural Engineering Research Center, Shandong University, Shan Dong, Jinan

250061, China^1

College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, Shandong

266590, 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: Crossing faults;    Engineering practices;    Ground surfaces;    Grouting materials;    Grouting pressure;    Grouting reinforcements;    Research results;    Soft surrounding rocks;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/2/022059/pdf
DOI  :  10.1088/1755-1315/189/2/022059

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

When the TBM passes through the weak and broken strata, it is easy to get stuck and be buried. Through the advance pre grouting engineering practice of TBM crossing fault zone in Qingdao area, the pre grouting reinforcement measures for preventing the occurrence of TBM card machine are explored, including grouting pressure, grouting drilling design, grouting material and other key parameters. The research results show that the surface pre grouting method is an effective grouting measure to prevent the occurrence of TBM stuck and buried accidents. Single cement slurry and C-S double slurry are used as grouting materials. The cement slurry is used to fill the void in soft broken stratum and C-S double slurry is used to improve the controllability of slurry diffusion. In the process of advanced pre-grouting construction on the ground surface, the application of progressive segmental grouting technology and membrane bag sealing grouting technology can effectively guarantee the strengthening range of soft ground and improve the effect of grouting reinforcement.