Response of tunnel surrounding rocks in heavily deformed ground: Case study of Dongao Tunnel, Taiwan

Lin, Cui; Shau, H.-J.; Chen, Y.-P.; Wang, T.-T.

doi:10.1201/9780429424441-102

Cited by 1 publication

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“…Dabai and the Taiwan Stone Powder Road (abandoned) along the east coast, which are related to the transportation of minerals. The Yungchuen Tunnel, the New Yungchuen Tunnel, and the Dongao Tunnel were constructed in the 1970s, 1990s, and 2010s, respectively [35][36][37][38]. The geological characteristics revealed by the excavation face provided the ground-truth data that were used for comparisons in this study.…”

Section: Traffic and Tunnelmentioning

confidence: 99%

Application of Geological Mapping Using Airborne-Based LiDAR DEM to Tunnel Engineering: Example of Dongao Tunnel in Northeastern Taiwan

Wang

et al. 2021

Applied Sciences

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The use of digital elevation models (DEMs) that use airborne-based light detection and the ranging technique (airborne-based LiDAR) to understand large-scale geological structures has become important in geological surveying and mapping. Taking the Dongao Tunnel area in northeastern Taiwan as the study area, this study used the airborne-based LiDAR DEM and related value-added maps to interpret the topographic and geomorphic features of the area and identify locations for geological investigation. The characteristics of the rock mass were observed on-site and revealed by excavation of the highway tunnel in the study area; they were compared with the interpreted topographic and geomorphic features to determine the potential of using 1 m-resolution LiDAR DEM in geological surveys and in the evaluation of engineering characteristics of underground rock masses. The results of this study demonstrated that the DEM accurately captured geomorphic features: the strata composed of slate and schist had distinct appearances in both the clinometric map and the hillshade map; the locations of faults, lineaments, and drainage were consistent with those observed on-site, and the positions of these features were captured more accurately than those on conventional maps. Evident microrelief features, including the distribution of scarps, erosion gullies, and mini-drainage systems provide an effective basis for interpreting a deep-seated gravitational deformation slope and for an on-site inspection for validation. The use of high-resolution LiDAR DEM to interpret geomorphic features along with geological surveys provides a more comprehensive understanding of the survey area, supporting surveys and geological mapping, revealing the locations of potential slope failures, and enabling the assessment of tunnel engineering risks.

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Section: Traffic and Tunnelmentioning

confidence: 99%

Application of Geological Mapping Using Airborne-Based LiDAR DEM to Tunnel Engineering: Example of Dongao Tunnel in Northeastern Taiwan

Wang

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

show abstract

Response of tunnel surrounding rocks in heavily deformed ground: Case study of Dongao Tunnel, Taiwan

Cited by 1 publication

References 1 publication

Application of Geological Mapping Using Airborne-Based LiDAR DEM to Tunnel Engineering: Example of Dongao Tunnel in Northeastern Taiwan

Application of Geological Mapping Using Airborne-Based LiDAR DEM to Tunnel Engineering: Example of Dongao Tunnel in Northeastern Taiwan

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