Proceedings of the 2024 International Conference on Rail Transit and Transportation (ICRTT 2024)

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Numerical Simulation and Effect Analysis of Hydrogen Sulfide Treatment by Advanced Alkali Injection in Tunnel Face of Highway Tunnel

Authors
Erkang Li1, *, Jihua Wang1, Jiayao Li1, Luying Hao2
1School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan, 454000, China
2School of Tourism, Henan Normal University, Xinxiang, Henan, 453007, China
*Corresponding author. Email: 212302020091@home.hpu.edu.cn
Corresponding Author
Erkang Li
Available Online 16 December 2024.
DOI
10.2991/978-94-6463-610-9_21How to use a DOI?
Keywords
H2S; neutralization reaction; tunnel face; advanced alkali injection; lye injection simulation
Abstract

H2S gas overflow during tunnel excavation and operation will endanger workers and damage mechanical equipment. The injection of alkali into the tunnel face can significantly reduce the tunnel H2S emission. Using the chemical reaction module in COMSOL Multiphysics software, combined with the occurrence characteristics of H2S in tunnel rock mass and the parameters of alkali injection, the numerical simulation of H2S treatment by NaHCO3 injection in rock mass was carried out, and the diffusion law of alkali solution in rock mass and the effect of H2S treatment were analyzed. The results show that the content of H2S in the rock mass area of alkali infiltration is obviously reduced, and the influence range of alkali injection increases with the extension of alkali injection time. After 32 hours of continuous alkali injection, H2S in the rock mass is almost completely neutralized within 10 m from the hole. There is a significant difference between the effect of double-hole alkali injection and single-hole alkali injection with a hole spacing of 6 m on the tunnel face. Under the same treatment effect, the construction time is significantly reduced compared with the single-hole. The simulation results can guide the prevention and control of H2S emission disasters in the tunnel.

Copyright
© 2024 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 2024 International Conference on Rail Transit and Transportation (ICRTT 2024)
Series
Advances in Engineering Research
Publication Date
16 December 2024
ISBN
978-94-6463-610-9
ISSN
2352-5401
DOI
10.2991/978-94-6463-610-9_21How to use a DOI?
Copyright
© 2024 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  - Erkang Li
AU  - Jihua Wang
AU  - Jiayao Li
AU  - Luying Hao
PY  - 2024
DA  - 2024/12/16
TI  - Numerical Simulation and Effect Analysis of Hydrogen Sulfide Treatment by Advanced Alkali Injection in Tunnel Face of Highway Tunnel
BT  - Proceedings of the 2024 International Conference on Rail Transit and Transportation (ICRTT 2024)
PB  - Atlantis Press
SP  - 182
EP  - 192
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-610-9_21
DO  - 10.2991/978-94-6463-610-9_21
ID  - Li2024
ER  -