United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Engineering Feasibility Study on the Future Extension of the Eisenhower-Johnson Memorial Tunnel
-
2020-10-31
[PDF-40.83 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final Report
-
Corporate Publisher:
-
Abstract:A 3D implicit geological model was developed for the Eisenhower-Johnson Memorial Tunnel (EJMT) in Colorado for the purpose of selecting potential new tunnel bores that will extend the vehicular capacity of the existing tunnels. The 3D implicit geological model includes engineering geologic parameters of interest, such as rock mass classification parameters, rock mass quality index (Q), and rock mass rating (RMR). This model includes quantified uncertainty in each parameter. Using this probabilistic geologic model, a new alignment optimization algorithm, which seeks the best possible tunnel alignment through a given volume is developed. Further, a numerical finite difference model was calibrated to available EJMT case study data. This calibrated model validates the results of the alignment optimization algorithm. The result is a novel and useful tool and methodology, which can effectively evaluate and compare many plausible alignments and select the best possible option for further design studies.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
