Investigating the interactions of acoustic waves with underground structures via the boundary element method

Massah, Saeed Reza; Hajihassani, Mohsen; Haghighat, Abbas Eslami

doi:10.1016/j.apacoust.2021.107926

Applied Acoustics

2021

DOI: 10.1016/j.apacoust.2021.107926

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Investigating the interactions of acoustic waves with underground structures via the boundary element method

Saeed Reza Massah

Mohsen Hajihassani

Abbas Eslami Haghighat

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Cited by 5 publications

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“…Jones 29 and Iodice et al 30 used in-situ soil measurement tests to quantify the soil effect on acoustic waves. Massah et al 31 used the boundary element method to study the impact of soil surrounding the tunnel on the acoustic wave. Massah and Torabipour 32 investigated the effects of other parameters like the tunnel buried depth, lining concrete material, and lining thickness on the behavior of reflected and transmitted acoustic waves from a buried tunnel in a single-layer soil structure.…”

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Investigation of acoustic waves behavior of an underground tunnel in a multilayer soil

Roohezamin

Kalatehjari

Hajihassani

et al. 2022

Sci Rep

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Understanding the acoustic behavior of buried tunnels is valuable for locating them and monitoring their structure health. This research focuses on the acoustic behavior of buried tunnels in multilayer soil structures. The reflected and transmitted acoustic wave pressure variations are investigated exclusively for a multilayer soil buried tunnel. The tunnel system's 3D finite element model is presented, which contains the tunnel lining, surrounding soil, and the air inside the tunnel and at the ground surface. A free air explosion is used as the acoustic wave source. The reflected and transmitted waves' pressure values are measured to evaluate the effects of mechanical characteristics of soil layers, tunnel buried depths, and lining concrete types on the acoustic wave behavior of the tunnel. In addition, a utility line is introduced to the system in different positions related to the main tunnel to investigate its effect on the main tunnel’s acoustic wave behavior. The results indicate that in a multilayer soil structure, the relative position of the soil layers and the tunnel (whether the main tunnel or the utility line) significantly impacts the acoustic pressure value, particularly the transmitted wave pressure. When changing the tunnel buried depth and the lining concrete type, multiple pressure peaks are observed in reflected acoustic wave pressure–time history exclusive to a tunnel surrounded by a multilayer soil structure. The findings can be used to precisely interpret the recorded signals for structural health monitoring and locating underground structures, especially in a media with multilayer soil structures.

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confidence: 99%

Investigation of acoustic waves behavior of an underground tunnel in a multilayer soil

Roohezamin

Kalatehjari

Hajihassani

et al. 2022

Sci Rep

View full text Add to dashboard Cite

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Investigating the interactions of acoustic waves with underground structures via the boundary element method

Cited by 5 publications

References 25 publications

Investigation of acoustic waves behavior of an underground tunnel in a multilayer soil

Investigation of acoustic waves behavior of an underground tunnel in a multilayer soil

Analytically-integrated radial integration PBEM for solving three-dimensional steady heat conduction problems

Grid-moving equivalent source method in a probability framework for the transformer discharge fault localization

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