Analysis of Blasting Vibration Effect of Railway Tunnel and Determination of Reasonable Burial Depth

Wang, Hailong; Zhao, Yan; Shan, Renliang; Tong, Xiao; Liu, Dong

doi:10.1155/2022/7151294

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…Overall, these fndings suggest good agreement between experimental and numerical models, afrming the suitability of the numerical model for further analysis. Moreover, the results validate the efectiveness of using the ALE fuid-structure coupling algorithm to examine the dynamic attributes of the explosion phenomenon [38][39][40][41].…”

Section: Numerical Results and Discussionsupporting

confidence: 52%

Study on the Earth-Covered Magazine Models under the Internal Explosion

Gong,

Qiu,

Long

et al. 2024

Shock and Vibration

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The use of earth-covered magazines (ECMs) is increasingly prevalent in protective engineering due to their concealment and cost-effectiveness. To explore the optimal thickness of earth covering for ECMs, scaled model tests were conducted under explosive charges equivalent to 30 kilograms of TNT. The resulting overpressure outside the model in the 180° direction was measured. Subsequently, computational analyses were conducted employing LS-DYNA software to examine these experimental findings. The findings indicate that increasing the thickness of the rear soil can mitigate peak overpressure, delay the air shock wave’s arrival time, and reduce the impulse of the positive phase. The numerical calculations closely align with experimental data, with peak overpressure deviation remaining under 10%. The shock wave initially impacts the top of the model before reaching the rear, with soil scattering more pronounced in the 90° direction compared to the 180° direction. Furthermore, an analysis of soil energy absorption rate variation was conducted based on energy conservation principles. These results provide valuable insights for optimizing the design and construction of ECMs.

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Section: Numerical Results and Discussionsupporting

confidence: 52%

Study on the Earth-Covered Magazine Models under the Internal Explosion

Gong,

Qiu,

Long

et al. 2024

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…Although many achievements (Wang et al 2022;Ling et al 2023;Roy et al 2020) have been made in the prediction of tunnel blasting vibration effect and impact partitioning, which have certain guiding significance for practical engineering, there are still some deficiencies. Theoretical studies with the assumption of a homogeneous, isotropic medium as a precondition are not compatible with practical engineering.…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Prediction of Vibration Waveform and Division of Influenced Partitions under the Action of Blasting

Zhao,

Wang,

et al. 2023

Preprint

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To study the impact of cutting blasting on the surface of the tunnel, a vibration waveform prediction function was constructed, and a method of dividing the affected area based on the vibration waveform theory was proposed. Based on the equivalent spherical charge theory, it is possible to establish a connection between the fitting coefficient and the engineering parameters in the equivalent source intensity function. Furthermore, a blasting vibration waveform function suitable for practical engineering can be constructed. Secondly, the reliability of the method introduced in this paper is verified based on the blasting vibration data monitored on site. Finally, the impact areas of blasting vibration are divided based on the peak particle velocity and vibration displacement as standards. The research results show that the vibration waveform prediction system introduced can better restore the vibration waveform corresponding to cutting blasting. In addition, the zoning method introduced in this article can reasonably divide the scope of the affected area. Moreover, the calculation process is simple and practicable. It has certain reference significance for similar blasting project.

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“…Terefore, it is very important to study the prediction of blasting vibration waveforms and the impact zoning of blasting vibrations. Although many achievements [27][28][29][30] have been made in the prediction of tunnel blasting vibration efect and impact partitioning, which have certain guiding signifcance for practical engineering, there are still some defciencies. For example, the theoretical results obtained based on the assumption of a uniform and isotropic medium as a research premise are not universal.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Vibration Waveform and Division of Influenced Partitions under the Action of Blasting

Zhao,

Yin,

Wang

et al. 2024

Shock and Vibration

Self Cite

View full text Add to dashboard Cite

To study the impact of cutting blasting on the surface, a vibration waveform prediction function was constructed, and a method of dividing the affected area was proposed. Based on the equivalent spherical charge theory, it is possible to establish a connection between the fitting coefficient and the engineering parameters in the equivalent source intensity function. Furthermore, a blasting vibration waveform function suitable for engineering can be constructed. Secondly, the reliability of the method introduced is verified through the data monitored on-site. Finally, the affected partitions of blasting vibration are divided based on the peak particle velocity and vibration displacement as standards. The results show that the vibration waveform prediction system introduced can restore the vibration waveform corresponding to cutting blasting. In addition, the zoning method can reasonably divide the scope of the affected area.

show abstract

Analysis of Blasting Vibration Effect of Railway Tunnel and Determination of Reasonable Burial Depth

Cited by 5 publications

References 19 publications

Study on the Earth-Covered Magazine Models under the Internal Explosion

Study on the Earth-Covered Magazine Models under the Internal Explosion

WITHDRAWN: Prediction of Vibration Waveform and Division of Influenced Partitions under the Action of Blasting

Prediction of Vibration Waveform and Division of Influenced Partitions under the Action of Blasting

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