Analysis of slope fracturing under transient earthquake loading by random discrete element method

Earthquake can cause significant rock fracturing in either the short or long terms. A comprehensive analysis of the fracturing mechanism is critical for risk assessments of potential slope failures, landslide and debris granular dynamics in seismic prone areas. This study employed 2D discrete element method (DEM) to investigate the fracturing of an intact rock slope of 600 m in base length and 300 m in height, with explicit considerations of material heterogeneity by random field theory. Following the Monte-Carlo simulation scheme, 5,400 DEM simulations were performed, and the characteristics of slope fracturing was statistically analysed.

地震可能在不同时间尺度上导致岩石发生显著的断裂。对断裂机制进行全面分析对于评估地震易发区域潜在的斜坡失稳、滑坡以及碎屑颗粒动力学风险至关重要。本研究采用二维离散元法（DEM）对基长600米、高300米的完整岩质斜坡进行断裂研究，并通过随机场理论明确考虑了材料的不均匀性。遵循蒙特卡洛模拟方案，共进行了5,400次DEM模拟，并对斜坡断裂的特征进行了统计分析。