The test results show that the tunnel with smaller values of C/D and of d/D will suffer the larger bending moment on the existing tunnel lining caused by jacking force.

• 针对潜盾施工问题，本研究分为两大主题来讨论：第一部份探讨不同深径比下单隧道盾尾间隙闭合后，地盘应力释放所造成的隧道衬砌弯矩大小与分布情况；