Impact analysis of short-term heavy rainfall on eolian sand slope stability by visualized experiments
Lu, Weihua ， Zheng, Haozhang ， Song, Yuqi ， Liu, Weizheng ， Zhang, Yongxing ， Xu, Zixiang
2025-10-01 JOURNAL OF HYDROLOGY 2025 659(卷), null(期), (null页)
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Based on our self-developed visualized experimental device, we investigated the erosion failure characteristics and mechanisms of eolian sand slopes in desert hinterlands under simulated rainfall conditions. The impact of various rainfall intensities, slope angles, and soil cover reinforcement measures on slope stability are assessed. The effectiveness of different soil cover particle sizes in mitigating erosion is also evaluated. Results indicate that rainwater infiltration significantly reduces the slope soil's matric suction and shear strength, leading to instability and failure. Soil covers with larger particle sizes greatly reduce sediment yield and enhance slope stability under high-intensity rainfall conditions and, in specific cases, can even thoroughly prevent the formation of aeolian sand. This research provides crucial theoretical support for designing effective slope protection measures and contributes to the broader understanding of erosion dynamics in desert environments.
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