Proceedings of the 2023 5th International Conference on Structural Seismic and Civil Engineering Research (ICSSCER 2023)

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Study on the Influence of Tunnel Excavation Blasting on the Safety of Accumulation Slope at the Entrance

Authors
Feng Huang1, Siyuan Li1, *, Shunhang Xue1, Yonghao Yang1, Shuangjiang Wu2
1State Key Laboratory of Mountain Bridge and Tunnel Engineering, School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China
2Chongqing Communications Construction (Group) Company Limited, Chongqing, China
*Corresponding author. Email: 1611772134@qq.com
Corresponding Author
Siyuan Li
Available Online 7 December 2023.
DOI
10.2991/978-94-6463-312-2_28How to use a DOI?
Keywords
blasting vibration; continuous-discontinuous coupling; accumulation layer slope
Abstract

During the tunnel blasting, with the accumulation of blast damage in the accumulation layer, accidents such as slope landslide of the accumulation layer and tunnel collapse quickly occur. Based on the Qiaopingshan tunnel project in Chongqing, the stability of the accumulation slope under different blasting loads and the variation law of its velocity field, displacement field and force chain distribution between particles in the accumulation layer are studied by using FLAC3D-PFC3D coupling analysis method. And a new method is proposed to solve the safety factor of the slope of the accumulation layer coupled with the discrete element and the finite element, that is, the strength of the physical and mechanical parameters between the particles of the accumulation layer is reduced, and the ratio of the inter-particle tension and the cohesive force chain is used as the evaluation standard to solve the safety factor of the slope.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 5th International Conference on Structural Seismic and Civil Engineering Research (ICSSCER 2023)
Series
Atlantis Highlights in Engineering
Publication Date
7 December 2023
ISBN
10.2991/978-94-6463-312-2_28
ISSN
2589-4943
DOI
10.2991/978-94-6463-312-2_28How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Feng Huang
AU  - Siyuan Li
AU  - Shunhang Xue
AU  - Yonghao Yang
AU  - Shuangjiang Wu
PY  - 2023
DA  - 2023/12/07
TI  - Study on the Influence of Tunnel Excavation Blasting on the Safety of Accumulation Slope at the Entrance
BT  - Proceedings of the 2023 5th International Conference on Structural Seismic and Civil Engineering Research (ICSSCER 2023)
PB  - Atlantis Press
SP  - 270
EP  - 280
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-312-2_28
DO  - 10.2991/978-94-6463-312-2_28
ID  - Huang2023
ER  -