Digital Tunnel and Its Application in an Undersea Tunnel


Xiaojun Li

Lecturer, Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China


Hehua Zhu

Professor, Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China


Digital Tunnel is a new concept in tunnel engineering. It is an information system that provides information services and innovative tools for the whole life cycle of tunnel engineering. This paper first presents a framework of Digital Tunnel. The framework includes data management system of all relevant data in tunnel engineering, strata modeling method and tunnel modeling method, visualization tools, spatial analysis techniques and engineering applications. Then an integrated platform of Digital Tunnel is put forwarded. Finally, engineering application study in Xia-men Xiang-an undersea tunnel, which is the first undersea tunnel under construction in the mainland of China, is provided. By integrating the data of geological surveying, design, construction and monitoring into the platform, and employing the modeling methods proposed in this paper, a digital model of the tunnel is established. The model is a real 3-dimensional one, and it is very informative because data could be easily retrieved through visualized way. Moreover, useful information could be processed out of these data by innovative spatial analysis tools. Results also show Digital Tunnel could also be potentially very helpful in tunnel maintenance and service management.

Keywords: digital tunnel; undersea tunnel; digital strata; spatial analysis; information system.

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