Impact analysis of short-term heavy rainfall on eolian sand slope stability by visualized experiments

IF 5.9 1区地球科学 Q1 ENGINEERING, CIVIL

Journal of Hydrology Pub Date : 2025-04-11 DOI:10.1016/j.jhydrol.2025.133284

Weihua Lu , Haozhang Zheng , Yuqi Song , Weizheng Liu , Yongxing Zhang , Zixiang Xu

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Abstract

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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短期强降雨对风沙边坡稳定性影响的可视化实验分析

利用自行研制的可视化实验装置，研究了模拟降雨条件下荒漠腹地风沙坡面侵蚀破坏特征及机理。评估了不同降雨强度、坡角和土壤覆盖层加固措施对边坡稳定性的影响。评价了不同覆盖层粒径对土壤侵蚀的抑制作用。结果表明，雨水入渗显著降低了边坡土体的基质吸力和抗剪强度，导致边坡失稳破坏。在强降雨条件下，较大粒径的土壤覆盖层大大减少了产沙量，增强了边坡的稳定性，在某些情况下，甚至可以彻底防止风沙的形成。该研究为设计有效的护坡措施提供了重要的理论支持，有助于拓宽对沙漠环境侵蚀动力学的认识。

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来源期刊

Journal of Hydrology 地学-地球科学综合

CiteScore

11.00

自引率

12.50%

发文量

1309

审稿时长

7.5 months

期刊介绍： The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.