Numerical Simulation and Monitoring of Surface Environment Influence of Waterless Sand Layer Shield Tunneling

3rd Annual International Workshop on Materials Science and Engineering

Shang, Yanliang^1,2 ; Han, Tongyin^3 ; Shi, Wenjun^2 ; Du, Shouji^1 ; Qin, Zhichao^2

Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai

200240, China^1

School of Civil Engineering Shijiazhuang, TieDao University, Shijiazhuang

050043, China^2

Langfang Teachers University, Langfang

065000, China^3

关键词: Double line spacing;    Finite difference model;    Shield tunneling method;    Simulation and monitoring;    Surface deformation;    Surface environments;    Surface settlements;    Urban subway tunnel;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/250/1/012070/pdf
DOI  :  10.1088/1757-899X/250/1/012070

来源: IOP

【 摘 要 】

The development of urban subway is becoming more and more rapid and plays an increasingly important role. The shield tunneling method has become the first choice for the construction of urban subway tunnel in the construction of urban subway. The paper takes the interval of Shijiazhuang Metro Line 3 Administrative Center Station and Garden Park Station as the engineering background. The establishment of double shield finite difference model by considering the thickness of covering soil, tunnel excavation and excavation at the same time, distance and other factors, the surface deformation, and soil thickness. The ground deformation law is obtained, the surface settlement is inversely proportional to the overburden thickness and the double line spacing, and the gradual excavation is smaller than the synchronous excavation.