Abstract
This article presents a novel automatic PSO-based back analysis method for mechanical parameters of block discrete element method. Incorporating particle swarm optimization (PSO) algorithm and recursive algorithm, a parameter back-analysis program is developed. Two cases, a laboratory test of columnar jointed rock mass and a typical landslide, are implemented for validation. The results show that the proposed method is feasible and accurate. As an automatic solution for parameter back analysis, this work has broad application prospects in geotechnical engineering.
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