Monitoring and analysis of influence of TBM construction on surrounding rock stability under urban environment and supporting parameters optimization

作者：Huang Mingli^*; Xu Fei; Wu Zhiyong

来源：Chinese Journal of Rock Mechanics and Engineering, 2012, 31(7): 1325-1333.

• Monitoring and analysis
• Supporting parameters optimization
• Surrounding rock stability
• Tunnel boring machines
• Tunnelling engineering

The section from Wulidian to Shanyanggou Reservoir Station in Chongqing Transit Line 6 is the testing project, in which the tunnel boring machine(TBM) was firstly employed as a tool for the construction of urban rail transit. To investigate the stability of the surrounding rock of tunnel in construction, a large number of in-situ monitorings were conducted. Based on the monitoring data, the variation laws and distributions of the vault settlement, displacement in deep surrounding rock, axial force in bolt, internal force in steel arch and contacting stress with surrounding rock were analyzed in detail. Then, the supporting parameters optimization was accomplished using numerical simulation. The research is beneficial to fundamentally guide the follow-up construction of the tunnel and the design scheme optimization. The proposed technique has potential applications to a large range of urban construction engineerings using TBM technology.

• 出版日期2012
• 单位北京交通大学