Effect of Inclined Tension Crack on Rock Slope Stability by SSR Technique

Ramana, Ch. Venkat; Thote, Niranjan Ramchandra; Singh, Arun K.

doi:10.32604/iasc.2023.031838

Cited by 1 publication

(2 citation statements)

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“…The slope model comprises a total of 3382 elements and 6879 nodes. Additional details on the study, specifically the impact of an inclined TC on slope stability can be found in our prior paper 5 . The RS2 software is employed to ascertain the Critical Strength Reduction Factor (CSRF) and identify the CSS of the slope.…”

Section: Development Of Slope Model and Characterisation Of Rock Mass...mentioning

confidence: 99%

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

Ramana,

Thote,

Singh

2024

jmmf

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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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Section: Development Of Slope Model and Characterisation Of Rock Mass...mentioning

confidence: 99%

“…Ramana et al, 5 recently conducted a numerical study examining the impact of the inclination angle of a tension crack on the stability of a rock slope. Their findings revealed that the FoS initially increases with the inclination angle of the tension crack until it reaches a constant value.…”

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confidence: 99%