Abstract
Nowadays, railway tunnel construction faces huge developments and opportunities, with a tendency for high speed and long distance. How to effectively apply the information in the construction process has been the focus of current research. According to the Xian-nvyan tunnel in Xicheng high-speed railway, our research was based on the geological forecast, selecting appropriate tunneling model parameters to establish the 3D calculation model. Through the numerical simulation of three tunnel excavation and support methods, we analyzed the displacement of surrounding rock and the plastic failure to select the construction method reasonably. Compared with the actual measured data, we judged the rationality of the selected scheme and model parameters, so as to provide design parameters which conform to the surrounding rock properties for the subsequent construction, thus optimizing the construction program and applying the concept of information-based construction in engineering actually.
Highlights
At present, China has become the largest and the fastestgrowing constructor of tunnels in the world
Since the Austrian civil engineer Rabcewice put forward the new Austrian tunneling method (NATM) in the 1940s, the tunnel construction technology, which proposes to make the most out of the self-bearing capacity of surrounding rock and integrated design, construction, and monitoring, has been a widely used theory of tunnel monitoring measurement
Xian-nvyan tunnel of Xicheng Railway is taken as the research background, combined with concrete engineering example; an intensive study is carried out by the combination of the geological forecast, numerical simulation, and field monitoring measurement
Summary
China has become the largest and the fastestgrowing constructor of tunnels in the world. Since the Austrian civil engineer Rabcewice put forward the new Austrian tunneling method (NATM) in the 1940s, the tunnel construction technology, which proposes to make the most out of the self-bearing capacity of surrounding rock and integrated design, construction, and monitoring, has been a widely used theory of tunnel monitoring measurement. Chen et al studied the doublearched highway tunnel in Hunan Province, which was based on the field measurements, analyzing the deformation of surrounding rocks and simulating the process of construction with the finite element method [3]. Shock and Vibration high-speed railway tunnel, for the analysis of geological investigation, forecast, numerical simulation, and monitoring measurement, discussing the position and function of the different information in the tunnel construction, in order to provide a reference for the development of tunnel information construction systems
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