Analysing Slope Stability in Response to Blast-Induced Dynamic Loading by Pseudo-Static Approach

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Authors

  • Ch. Venkat Ramana
     Department of Mining Engineering, Visvesvaraya National Institute of Technology, Nagpur - 440010 ,IN
  • N. R. Thote
     Department of Mining Engineering, Visvesvaraya National Institute of Technology, Nagpur - 440010 ,IN
  • Arun Kumar Singh
     Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur - 440010 ,IN

DOI:

https://doi.org/10.18311/jmmf/2024/36463

Keywords:

Blasting, Critical Slip Surface, Near Field Monitoring, Pseudo-Static Approach, Seismic Coefficient, Seismic Coefficient Ratio, Slope Stability

Abstract

Regular blasting in opencast coal mines generates significant ground vibrations, impacting mine slope stability and posing risks to life and property. This study focuses on monitoring ground vibrations in an opencast coal mine through near-field monitoring and investigating the impact of blast-induced seismic loading on slope stability. The approach involves a pseudostatic method utilising Strength Reduction Factor (SRF), based on Finite Element (FE) numerical modelling software. The study examines a pit slope with a tension crack under seismic loading, varying the intensity of seismic coefficients (Ks) from 0 to 0.5. These coefficients are determined through field vibration monitoring during production blasts. In numerical modelling, seismic loading is considered in both horizontal (outward of slope face) and vertically downward (in-line with gravity). Numerical modelling incorporates dimensionless horizontal seismic coefficient (Kh) and vertical seismic coefficient (Kv), and both directions which is expressed as Seismic Coefficient Ratio (SCR) which is the ratio of Kv and Kh for interpretation of results. Although SCR induces changes in the Factor of Safety (FoS), its impact is minimal compared to seismic loading solely in the horizontal direction. Consequently, increasing SCR leads to a decrease in FoS. The study observes that Peak Ground acceleration (PGA) in the longitudinal direction has greater dominance than in the transverse direction. Additionally, the seismic wave in the horizontal direction destabilises the slope more than the corresponding vertical seismic wave. These findings are elucidated in the context of the Critical Slip Surface (CSS).

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Published

2024-04-22

How to Cite

Ramana, C. V., Thote, N. R., & Singh, A. K. (2024). Analysing Slope Stability in Response to Blast-Induced Dynamic Loading by Pseudo-Static Approach. Journal of Mines, Metals and Fuels, 72(2), 127–145. https://doi.org/10.18311/jmmf/2024/36463

Issue

Volume 72, Issue 2, February 2024

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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Europe PMC
Received 2024-02-04
Accepted 2024-04-02
Published 2024-04-22

 

References

Wyllie DC, Mah C. Rock slope engineering. CRC Press; 2004.

Inumula S, Satyanarayana I, Budi G, Sen P, Sinha AK. Stability evaluation of highwall slope in an opencast coal mine- A case study. J Mines Metals Fuels. 2018; 66:209- 17. https://doi.org/10.18280/mmc_c.780301 DOI: https://doi.org/10.18280/mmc_c.780301

Ramana CV, Thote NR, Singh AK. Numerical investigation into factors affecting the stability of opencast coal mine’s rise side highwall slope. J Mines Metals Fuels.2024; 72(1):71-81. https://doi. org/10.18311/jmmf/2024/36299 DOI: https://doi.org/10.18311/jmmf/2024/36299

hote NR, Ramana CV. Investigation into the effect of blasting on slope stability in opencast coal mines. In Rock Fragmentation by Blasting: The 10th International Symposium on Rock Fragmentation by Blasting. Taylor and Francis Books Ltd. 2013; 10:763-8

Ramana CV, Thote NR, Singh AK. Effect of inclined tension crack on rock slope stability by SSR technique. Intelligent Automation and Soft Computing. 2023; 36(1). https://doi.org/10.32604/iasc.2023.031838 DOI: https://doi.org/10.32604/iasc.2023.031838

Kesimal A, Ercikdi B, Cihangir F. Environmental impacts of blast-induced acceleration on slope instability at a limestone quarry. Environmental Geology. 2008; 54:381- 9. https://doi.org/10.1007/s00254-007-0825-4 DOI: https://doi.org/10.1007/s00254-007-0825-4

Azizabadi HR, Mansouri H, Fouché O. Coupling of two methods, waveform superposition and numerical, to model blast vibration effect on slope stability in jointed rock masses. Computers and Geotechnics. 2014; 61:42- 9. https://doi.org/10.1016/j.compgeo.2014.04.008 DOI: https://doi.org/10.1016/j.compgeo.2014.04.008

Deb D, Kaushik KN, Choi BH, Ryu CH, Jung YB, Sunwoo C. Stability assessment of a pit slope under blast loading: A case study of Pasir coal mine. Geotechnical and Geological Engineering. 2011; 29:419-29. https:// doi.org/10.1007/s10706-010-9387-4 DOI: https://doi.org/10.1007/s10706-010-9387-4

Jiang N, Zhou C, Lu S, Zhang Z. Propagation and prediction of blasting vibration on a slope in an open pit during underground mining. Tunnelling and Underground Space Technology. 2017; 70:409-21. https://doi.org/10.1016/j.tust.2017.09.005 DOI: https://doi.org/10.1016/j.tust.2017.09.005

Bazzi H, Noferesti H, Farhadian H. Modelling the effect of blast-induced vibrations on the stability of a faulted mine slope. Journal of the Southern African Institute of Mining and Metallurgy. 2020; 120(10):591-7. https:// doi.org/10.17159/2411-9717/1066/2020 DOI: https://doi.org/10.17159/2411-9717/1066/2020

Wu T, Zhou C, Jiang N, Xia Y, Zhang Y. Stability analysis for high-steep slope subjected to repeated blasting vibration. Arabian Journal of Geosciences. 2020; 13:1-2. https://doi.org/10.1007/s12517-020-05857-y DOI: https://doi.org/10.1007/s12517-020-05857-y

Melo C, Sharma S. Seismic coefficients for pseudostatic slope analysis. In13th World Conference on Earthquake Engineering. Canada, Vancouver; 2004. p. 369.

Bray JD, Travasarou T. Pseudostatic coefficient for use in simplified seismic slope stability evaluation. Journal of Geotechnical and Geo-Environmental Engineering. 2009; 135(9):1336-40. https://doi.org/10.1061/(ASCE) GT.1943-5606.0000012 DOI: https://doi.org/10.1061/(ASCE)GT.1943-5606.0000012

Bray JD, Travasarou T. Pseudostatic slope stability procedure. In 5th International Conference on Earthquake Geotechnical Engineering; 2011. p. 255-66.

Metya S, Chaudhary N, Sharma KK. Psuedostatic stability analysis of rock slope using Patton’s shear criterion. International Journal of Geo-Engineering. 202; 12:1-22. https://doi.org/10.1186/s40703-020-00137-w DOI: https://doi.org/10.1186/s40703-020-00137-w

Sun C, Chai J, Luo T, Xu Z, Qin Y, Yuan X, Ma B. Stability charts for pseudostatic stability analysis of rock slopes using the nonlinear Hoek-Brown strength reduction technique. Advances in Civil Engineering. 2020; 3:1-6. https://doi.org/10.1155/2020/8841090 DOI: https://doi.org/10.1155/2020/8841090

Li AJ, Lyamin AV, Merifield RS. Seismic rock slope stability charts based on limit analysis methods. Computers and Geotechnics. 2009; 36(1-2):135-48. https://doi.org/10.1016/j.compgeo.2008.01.004 DOI: https://doi.org/10.1016/j.compgeo.2008.01.004

Latha GM, Garaga A. Seismic stability analysis of a Himalayan rock slope. Rock Mechanics and Rock Engineering. 2010; 43:831-43. https://doi.org/10.1007/ s00603-010-0088-3 DOI: https://doi.org/10.1007/s00603-010-0088-3

Zhang Y, Zhang Y. Seismic slope stability analysis by considering tension crack. Earthquake-induced landslides: Initiation and run-out analysis by considering vertical seismic loading, tension failure and the trampoline effect. 2018: 41-62. https://doi. org/10.1007/978-981-10-2935-6_3 DOI: https://doi.org/10.1007/978-981-10-2935-6_3

Sun C, Chai J, Ma B, Luo T, Gao Y, Qiu H. Stability charts for pseudostatic stability analysis of 3D homogeneous soil slopes using strength reduction finite element method. Advances in Civil Engineering. 2020; 3:1-16. https://doi.org/10.1155/2019/6025698 DOI: https://doi.org/10.1155/2019/6025698

Das S, Maheshwari BK. Effect of vertical seismic coefficient in slope stability analysis. In Indian Young Geotechnical Engineers Conference. Singapore: Springer Nature Singapore; 2019. p. 281-7. https://doi. org/10.1007/978-981-16-6456-4_30 DOI: https://doi.org/10.1007/978-981-16-6456-4_30

Zhang F, Gao Y, Wu Y, Zhang N, Qiu Y. Effects of vertical seismic acceleration on 3D slope stability. Earthquake Engineering and Engineering Vibration. 2016; 15(3):487- 94. https://doi.org/10.1007/s11803-016-0338-9 DOI: https://doi.org/10.1007/s11803-016-0338-9

Ganjeh RS, Memarian H, Khosravi MH, Mojarab M. A comparison between effects of earthquake and blasting on the stability of mine slopes: A case study of Chadormalu open-pit mine. Journal of Mining and Environment. 2019; 10(1):223-40.

Li ZW, Yang XL, Li TZ. Static and seismic stability assessment of 3D slopes with cracks. Engineering Geology. 2020; 265:105450. https://doi.org/10.1016/j. enggeo.2019.105450 DOI: https://doi.org/10.1016/j.enggeo.2019.105450

He Y, Yu J, Yuan R, Wang W, Nikitas N. Stability and failure mechanisms in three-dimensional cracked slope: Static and dynamic analysis. Computers and Geotechnics. 2022; 144:104626. https://doi. org/10.1016/j.compgeo.2021.104626 DOI: https://doi.org/10.1016/j.compgeo.2021.104626

Utili S, Abd AH. On the stability of fissured slopes subject to seismic action. International Journal for Numerical and Analytical Methods in Geomechanics. 2016 ; 40(5):785-806. https://doi.org/10.1002/nag.2498 DOI: https://doi.org/10.1002/nag.2498

Stanković S, Katalinić M, Kuhinek D, Bohanek V. Detecting a typical value and their influence on blastinduced seismic measurement results. Applied Sciences. 2022; 12(12):5820. https://doi.org/10.3390/app12125820 DOI: https://doi.org/10.3390/app12125820

Lee CW, Kim J, Kang GC. Full-scale tests for assessing blasting-induced vibration and noise. Shock and Vibration. 2018; (16):1-14. https://doi. org/10.1155/2018/9354349 DOI: https://doi.org/10.1155/2018/9354349

Yu C, Li H, Yue H, Wang X, Xia X. A case study of blasting vibration attenuation based on wave component characteristics. Journal of Rock Mechanics and Geotechnical Engineering. 2023; 15(5):1298-311. https://doi.org/10.1016/j.jrmge.2022.09.013 DOI: https://doi.org/10.1016/j.jrmge.2022.09.013

Oyler S, Kertesz C, Bruce J. Blasting vibration controloverview of past practices and current trends. In: Proceedings of the 26th Annual Conference on Explosives and Blasting Technique. International Society of Explosives Engineers; 2000.

Roy PP. A comprehensive assessment of ground vibrations and structural damage caused by blasting. In Rock Fragmentation by Blasting. CRC Press; 2012. p. 453-62. https://doi.org/10.1201/b13759-60. PMid:22496088. DOI: https://doi.org/10.1201/b13759-60

Duvall WI, Fogelson DE. Review of criteria for estimating damage to residences from blasting vibrations. US Department of the Interior, Bureau of Mines; 1962.

Dowding CH. Blast vibration monitoring and control: A thirty-year perspective. In ARMA US Rock Mechanics/ Geomechanics Symposium. ARMA-99; 1999.

Agrawal H, Mishra AK. Modified scaled distance regression analysis approach for prediction of blastinduced ground vibration in multi-hole blasting. Journal of Rock Mechanics and Geotechnical Engineering. 2019; 11(1):202-7. https://doi.org/10.1016/j.jrmge.2018.07.004 DOI: https://doi.org/10.1016/j.jrmge.2018.07.004

Ainalis D, Kaufmann O, Tshibangu JP, Verlinden O, Kouroussis G. Modelling the source of blasting for the numerical simulation of blast-induced ground vibrations: A review. Rock Mechanics and Rock Engineering. 2017; 50:171-93. https://doi.org/10.1007/ s00603-016-1101-2 DOI: https://doi.org/10.1007/s00603-016-1101-2

Kong KW. Blasting vibration assessment of rock slopes and a case study. In Slope Stability 2013: Proceedings of the 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics; 2013. p. 1335-44. https://doi. org/10.36487/ACG_rep/1308_95_Kong DOI: https://doi.org/10.36487/ACG_rep/1308_95_Kong

Matidza MI, Jianhua Z, Gang H, Mwangi AD. Assessment of blast-induced ground vibration at Jinduicheng molybdenum open pit mine. Natural Resources Research. 2020; 29:831-41. https://doi.org/10.1007/ s11053-020-09623-5 DOI: https://doi.org/10.1007/s11053-020-09623-5