Mechanism and Sensitivity Analysis of Collapse in Large Section Mountain Neighborhood Tunnels

Zhang, Yongjun and Wang, Junyi and Liu, Fei and Xia, Huangshuai (2022) Mechanism and Sensitivity Analysis of Collapse in Large Section Mountain Neighborhood Tunnels. Frontiers in Earth Science, 10. ISSN 2296-6463

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Abstract

Collapse is one of the most frequent geological disasters in mountain tunnel engineering, posing major safety concerns for underground structures and construction crews. According to a catastrophic collapse in the shallow buried area of the Huangjiakuang tunnel in Weihai City, Shandong Province, the contributing factors, that is, the surrounding rock property, influence of neighboring tunnel construction, and tunnel over-excavation are systematically investigated. The tunnel collapse, breaks through the ground surface, is inverted using MIDAS GTS NX. A tunnel deformation analysis model is created using the quantitative methods of grey relation analysis and entropy weight methods based on crown settlement and lateral wall horizontal contraction during tunnel excavation. The surrounding rock property, the distance between the left and right tunnel faces, and the over-excavation height have a significant effect on tunnel deformation, which are quantitatively interpreted using the tunnel deformation analysis model. This study is valuable for the multi-factor analysis of tunnel deformation and determining the main contributing factors to the collapse quantitatively.

Item Type: Article
Subjects: Bengali Archive > Geological Science
Depositing User: Unnamed user with email support@bengaliarchive.com
Date Deposited: 14 Mar 2023 12:01
Last Modified: 23 Sep 2024 04:42
URI: http://science.archiveopenbook.com/id/eprint/481

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