Investigating the role of kinematics and damage in the failure of rock slopes

Havaej, Mohsen; Stead, Doug

doi:10.1016/j.compgeo.2016.05.014

Cited by 14 publications

(1 citation statement)

References 17 publications

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“…Alejandro et al (2010) analyzed the failure mechanism of layered slopes based on engineering geological analysis and field investigations. Havaej and Stead (2016) considered the brittleness and damage characteristics of the rocks and analyzed the failure mechanism of the layered rock slope based on the method of numerical simulation. Aydan (2016) and Massey et al (2017) determined the failure mode and mechanism of rock slopes under earthquake action through model tests and numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Earthquake Dynamic Failure Mechanism of Dangerous Rock Based on Dynamics and PFC3D

Tian

Li³

et al. 2021

Front. Earth Sci.

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The dynamic failure mechanism of horizontally layered dangerous rock during earthquakes is complex and only few studies have addressed the combination of particle flow code (PFC) meso-level failure mechanism and mechanical analysis. Based on fracture mechanics and material mechanics we establish a calculation method for the interlayer load and stability coefficient of horizontal layered dangerous rock during strong earthquakes. The method was applied for calculating the stability of a horizontally layered dangerous slope along a highway in the Sichuan Province (China) during earthquakes as a case study. Using a 3D particle flow simulation technology, a PFC3D model of horizontal layered dangerous rock was established. Its dynamic stability, failure mode and Hilbert-Huang 3D time-frequency characteristics are analyzed, and the results of the simulation are largely consistent with the time of the dangerous rock failure as estimated by our new calculation method. Our study documents that as the seismic acceleration gradually increases, the stability coefficient of the rock block fluctuates more violently and the stability coefficient gradually decreases. The stability coefficient of the rock block decreases fastest between 5 and 6 s and the reduction in the stability coefficient is between 0.12 and 0.25. Before the seismic acceleration reaches the maximum, the dangerous rock blocks on the two main controlling structures collapse and get destroyed. 25 s after the earthquake, the failure mode of the dangerous rock is collapse-slip-rotation. We show that earthquakes with frequencies of 0–10 and 250 Hz have the strongest destructive effect on the stability of the horizontally layered dangerous rocks.

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Section: Introductionmentioning

confidence: 99%