1. Run-out distance analysis and impact force estimation for an actual landslide with multiple-barrier system based on a coupled SPH model.
- Author
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Zhang, Weijie, Wang, Xin, Hong, Xinyi, Chen, Shuxin, Ji, Jian, and Gao, Yufeng
- Subjects
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LANDSLIDES , *ANALYTICAL solutions , *LONG-distance running , *FLUMES , *HYDRODYNAMICS - Abstract
Previous studies on the impact mechanism of landslides against multiple barriers are commonly based on small-scale and large-scale flume tests in the absence of real-scale landslides. This study established a coupled smoothed particle hydrodynamics (SPH) model to analyze the landslide and multiple barriers in one numerical framework. Thereafter, a flume test of dry sand impacting dual barriers was simulated, and the impact force was compared to test results for the validation. The Gaoloucun landslide was selected as the studying case and by changing the barrier spacing, barrier height and number of rows, the dual-barrier system and triple-barrier system were designed with totally 12 simulation cases. All these cases were analyzed by the proposed SPH model to obtain the variation of run-out distance and peak impact force. The results show that a large barrier spacing is recommended for the improvement of interception efficiency and increasing the row number of barriers can take effect. Finally, the comparison between simulations and analytical solutions demonstrates the feasibility of the proposed SPH model in the impact analysis of actual landslides. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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