Numerical Simulation of Shield Tunnel Passing Through Underground Structure
Shield tunneling is often adopted in underground engineering such as civil tunnel construction and mine excavation. The program FLAC3D is used to simulate the process of the tunnel excavation through underground structure in Shenyang in this paper. The analysis results show that, (1) the soil below the end wall suffers great displacement, when the shield approaches the end wall of underground framework from different directions, so the soil under the end wall needs to be reinforced. (2) Increasing pressure and volume of grouting cant significantly reduce the amount of surface subsidence when the drilling of the shield acrosses through the independent foundation. (3) The influences of shielding to the construction are limited because of the constraint function to the surrounding rock above the tunnel by the great entire rigidity of under-ground framework. The results of numerical simulation exactly matches the monitoring data when the stiffness of under-ground frame structure is considered, and it can provide guidance for engineering practice.
Shield Tunnel Numerical Simulation Underground Structure
Yong Suo Li Ke Neng Zhang Mei Long Deng Chang Bo Huang
School of Geosciences and Info-Physics, Central South University, Changsha, 410083, China School of School of Geosciences and Info-Physics, Central South University, Changsha, 410083, China China Construction Municipal Construction Corporation Limited, Beijing 100163, China
国际会议
上海
英文
886-891
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）