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Dynamic Slope Stability Subject to Blasting Vibrations: a Case Study of the Jakarta-Bandung High-Speed Railway Tunnel

Abstract

This paper aims to evaluate dynamic slope stability induced by tunnel blast vibration with the help of a combination of geoelectrical techniques (e.g., vertical electrical sounding and electrical resistivity tomography), geotechnical methods (e.g., boreholes, Standard Penetration Test), and laboratory testing to characterize the subsurface conditions of a rock slope near residential houses in the Padalarang sub-district, West Bandung Regency, Indonesia, that is subjected to tunnel blast vibration. The slope is part of the mountain that will be excavated by a drill-and-blast method to provide a passageway for one of the Jakarta-Bandung high-speed railway tunnels. A series of trial blasts have been carried out and blast vibrations have been recorded, resulting in the linear regressions of the peak vector sum (PVS) and peak particle acceleration (PPA). Based on the allowable charge weights per delay, the PPA regression was then used to predict the acceleration that would result from the tunnel blast. The predicted acceleration was then used to analyze the dynamic stability of the slope using the pseudo-static approach. The slope stability analysis shows that the slope has a dynamic factor of safety of 1.3–1.5, indicating that the slope will be stable after experiencing the vibration induced by the tunnel blast. The results of this study show that combining geoelectrical survey with geotechnical methods could help geotechnical engineers to understand the subsurface condition and its complexity, which play vital roles in assessing the stability of the slope, particularly the slope that is subjected to dynamic loading from a tunnel blast.

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Data Availability

The measurement and analysis of geophysics data were done by Hermawan Phanjaya and Widodo, while the analysis and material of geotechnical data were supported by Simon Heru Prasetyo, Ganda Marihot Simangunsong, Made Astawa Rai, and Ridho Kresna Wattimena.

Code Availability

The 1D models of geoelectric data performed by own software (RESEP BANYU) and the 2D models of geoelectric data have proceed by Res2Dinv Software (Loke and Barker, 1996). Rocscience. Slide2-2D Limit Equilibrium Analysis for Slopes [Version 9.020]. Toronto: Rocscience Inc.; 2021.

Abbreviations

ERT:

Electrical resistivity tomography

VES:

Vertical electrical sounding

SPT:

Standard Penetration Test

N-SPT value:

Number of blows to penetrate 30 cm deep into a soil column

SD:

Scaled distance

R:

Absolute distance from the source to the monitoring point

Qmax :

Maximum charge per delay

PPV:

Peak particle velocity

PPA:

Peak particle acceleration

PVS:

Peak vector sum

FoS:

Factor of safety

K, b:

Site-specific constants

References

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Acknowledgements

We would like to thank the Ministry of Research, Technology, and Higher Education (RISTEKDIKTI) of Indonesia. The authors also gratefully acknowledge a research grant from the Program of Research, Community Service, and Innovation of the Institute Technology of Bandung (ITB). We also would like to thank PT. KCIC, HSRCC, and CREC for their assistance during data acquisition for this research.

Funding

This research was funded by the Ministry of Research, Technology, and Higher Education (RISTEKDIKTI) of Indonesia. The authors also gratefully acknowledge a research grant from the Program of Research, Community Service, and Innovation of the Institute Technology of Bandung (P3MI-ITB) fiscal year 2020 that is granted to the ITB Mining Engineering Research Group.

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Authors and Affiliations

Authors

Contributions

Writing-original draft preparation, writing review and editing, formal analysis, software, visualization, and investigation (Hermawan Phanjaya and Widodo); conceptualization, methodology, resources, and investigation (Hermawan Phanjaya, Widodo, Simon Heru Prasetyo, and Ganda Marihot Simangunsong); funding acquisition (Widodo and Simon Heru Prasetyo); supervision and project administration (Widodo, Simon Heru Prasetyo, Ganda Marihot Simangunsong, Made Astawa Rai, and Ridho Kresna Wattimena). All authors have read and agreed to the published version of the manuscript.

Corresponding author

Correspondence to Widodo.

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The authors declare no competing interests.

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Widodo, Phanjaya, H., Prassetyo, S.H. et al. Dynamic Slope Stability Subject to Blasting Vibrations: a Case Study of the Jakarta-Bandung High-Speed Railway Tunnel. Transp. Infrastruct. Geotech. (2022). https://doi.org/10.1007/s40515-022-00242-6

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  • DOI: https://doi.org/10.1007/s40515-022-00242-6

Keywords

  • Geoelectrical
  • Geotechnical investigation
  • Tunnel blast
  • Blasting vibration, Dynamic slope stability
  • Factor of safety
  • High-speed railway tunnel