Sensitivity Analysis of Un-lined Underground Spaces under Dynamic Loading using Numerical Methods

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RAHIMI DIZADJI M.; FAHIMIFAR A.; JABBARZADEH M.

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Paper Information

Journal: AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR) Year:2018 | Volume:50 | Issue:2 Page(s): 377-390

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Information Journal Paper

Title

Sensitivity Analysis of Un-lined Underground Spaces under Dynamic Loading using Numerical Methods

Author(s)

RAHIMI DIZADJI M. | FAHIMIFAR A. | JABBARZADEH M. | Issue Writer Certificate

Keywords

Dynamic loadingQ1

ExplosionQ2

Underground SpacesQ1

Numerical modelingQ2

Rock MechanicsQ2

Abstract

In this study, the effect of explosive penetrating projectiles on the stability of Underground Spaces is investigated through numerical simulation using FLAC2D software. Considering effect of numerous factors on this issue, sensitivity analysis on parameters such as depth of overburden, the width of opening and stress ratio (ratio of horizontal stress to vertical stress) was carried out. The effect of each parameter on the damage around the location of Explosion and underground space and the amount of deformation around the tunnel was investigated. For this purpose, a total of more than 35 numerical model were built and the required results were extracted. According to the results, the damaged zone around the opening is extended with increasing of excavation width and it is reduced with increasing of depth and stress ratio. The most important factor that affects the stability of opening is the depth of overburden such that with increasing depth of opening, the damage affected by Explosion is reduced surrounding the excavation. Based on the deformation of the opening roof, the stability has been assessed and the effect of various factors on it has been investigated. Finally, a mathematical equation based on the results of Numerical modeling is provided using SPSS software.

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APA: Copy

RAHIMI DIZADJI, M., FAHIMIFAR, A., & JABBARZADEH, M.. (2018). Sensitivity Analysis of Un-lined Underground Spaces under Dynamic Loading using Numerical Methods. AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR), 50(2 ), 377-390. SID. https://sid.ir/paper/165718/en

Vancouver: Copy

RAHIMI DIZADJI M., FAHIMIFAR A., JABBARZADEH M.. Sensitivity Analysis of Un-lined Underground Spaces under Dynamic Loading using Numerical Methods. AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR)[Internet]. 2018;50(2 ):377-390. Available from: https://sid.ir/paper/165718/en

IEEE: Copy

M. RAHIMI DIZADJI, A. FAHIMIFAR, and M. JABBARZADEH, “Sensitivity Analysis of Un-lined Underground Spaces under Dynamic Loading using Numerical Methods,” AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR), vol. 50, no. 2 , pp. 377–390, 2018, [Online]. Available: https://sid.ir/paper/165718/en

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