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Incorporating Spatial Uncertainty into Site Investigations for Tunneling Applications
Sub-surface stratigraphy is critical to the planning, design, and construction of tunneling projects. The differing site conditions (DSC) claims seen in the tunneling industry is often attributed to an inadequate level of geotechnical site investigations. In current tunneling practice, there is only limited guidance available for the geotechnical engineers to identify locations of investigations. This paper proposes incorporating the knowledge of spatial uncertainty into site investigations for tunneling applications. The paper compares the proposed approach with the conventional site investigation approach in reducing the sub-surface domain uncertainty, thus mitigating tunneling risks. The study applies advanced spatial techniques on actual geotechnical site investigation data from a soft-ground tunneling project. Multiple equiprobable realizations of the sub-surface domain are evaluated on a 3D random field and are post-processed to develop a model of spatial uncertainty. Incorporating the knowledge of spatial uncertainty allows a rational and logical approach in designing optimal site investigation campaigns for tunneling applications.
Incorporating Spatial Uncertainty into Site Investigations for Tunneling Applications
Sub-surface stratigraphy is critical to the planning, design, and construction of tunneling projects. The differing site conditions (DSC) claims seen in the tunneling industry is often attributed to an inadequate level of geotechnical site investigations. In current tunneling practice, there is only limited guidance available for the geotechnical engineers to identify locations of investigations. This paper proposes incorporating the knowledge of spatial uncertainty into site investigations for tunneling applications. The paper compares the proposed approach with the conventional site investigation approach in reducing the sub-surface domain uncertainty, thus mitigating tunneling risks. The study applies advanced spatial techniques on actual geotechnical site investigation data from a soft-ground tunneling project. Multiple equiprobable realizations of the sub-surface domain are evaluated on a 3D random field and are post-processed to develop a model of spatial uncertainty. Incorporating the knowledge of spatial uncertainty allows a rational and logical approach in designing optimal site investigation campaigns for tunneling applications.
Incorporating Spatial Uncertainty into Site Investigations for Tunneling Applications
Gangrade, Rajat (author) / Mooney, Mike (author) / Trainor-Guitton, Whitney (author)
Geo-Congress 2020 ; 2020 ; Minneapolis, Minnesota
Geo-Congress 2020 ; 345-354
2020-02-21
Conference paper
Electronic Resource
English
Incorporating Spatial Uncertainty into Site Investigations for Tunneling Applications
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