Analysis of Slope Protection of Gabion Mesh Based on FDM-DEM

作者：Long Li, Lingkai Zhang, Chong Shi, X. H. Ding · 发表于：Natural Hazards Review · 年份：2025 · DOI：10.1061/nhrefo.nheng-2487 · 被引用次数：3 · 研究领域：Landslides and related hazards、Tree Root and Stability Studies、Remote Sensing and Land Use

Extensive aeolian sand is distributed along the banks of the mainstream of the Tarim River, making the area susceptible to water erosion. Gabion mesh, as an ecological protection measure, effectively mitigates slope erosion. To investigate the protective efficacy of gabion mesh, a slope protection model of gabion mesh was established through the coupled finite-difference and discrete-element method (FDM-DEM). Protective effects were compared and analyzed among four configurations: vertical wall back, vertical wall front, step, and pagoda. The stability of the bank slope was evaluated using fluid–solid coupling theory. The results show that (1) under still water conditions, the safety factor of the protected bank slope increases from 1.37 to more than 1.57, with slope stability improving by more than 14.6%. Under identical slope ratios of retaining walls, the pagoda-type retaining wall structure exhibited higher slope safety factors compared to the other three structural configurations. Thus, its adoption is recommended for engineering applications under static water conditions. (2) The numerical model of gabion mesh developed using the discrete-element particle flow code effectively simulates its stress–strain characteristics, showing a high level of agreement with laboratory experiments. (3) Under dynamic water conditions, the particle mass loss on the protected bank slope is delayed to 6,000 steps, effectively reducing soil movement behind the wall. Analysis of stress calcu...