Analysis of the stability control measures for a ground-penetrating shield tunnel

作者：Wu, Huiming; Teng, Li; Yu, Yalei; Ye, Guanlin

来源：Modern Tunnelling Technology, 2014, 51(5): 61-65.

DOI：10.13807/j.cnki.mtt.2014.05.009

• Construction process
• Finite element simulations
• Internal counterweight
• Optimum stability
• Shield tunnel
• Situ conditions
• Stability control
• Surface loading

Based on the Nanjing ground-penetrating shield tunnel project, the finite-element simulation method is adopted to simulate the whole construction process of the ground-penetrating shield. An internal counterweight and surface loading are imposed on the model to analyze their effectiveness at controlling floating and improving stability of the tunnel. The results show that the internal counterweight can significantly improve the stability of the tunnel, while surface loading can reduce tunnel floating to some extent without obvious effects. According to in-situ conditions, the best way to realize the optimum stability of the tunnel is the combination of an internal counterweight and surface loading.

• 出版日期2014
• 单位上海大学; 上海交通大学