ABSTRACT
Figure 1 shows a schematic diagram of the physical model test. It includes four parts, soil tank, model EPB shield machine, driving system and data acquisition system. The soil tank is made of a steel frame, with inside dimensions of 2400 × 1200 mm
1 INTRODUCTION
Many studies have been carried out recently, on the behaviour of shield tunnel construction, mainly concentrating on 5 perspectives: 1) introduction of present status and new technology of shield tunnel method (Nakamura et al. 2003; Maeda & Kushiyama 2005); 2) analysis of instrumented projects and field trials (Peck 1969; Gonzalez & Sagaseta 2001); 3) close proximity of shield tunnelling (Bai 2000); 4) numerical simulation of tunnel excavation (Melis Maynar & Medina Rodríguez 2005); 5) physical model tests of shield tunnel construction (Kashima et al. 1996; Nomoto et al. 1999). The behaviour of tunnelling-induced ground disturbance, was investigated in most of the studies, while a few took shield machine working parameters into consideration. This paper will try to complement these studies, looking at the relationship of working parameters and ground disturbance in a series of model tests.
