考虑位移牵引的滑坡稳定性靶向分析
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重庆交通大学智慧城市学院

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重庆市技术创新与应用发展专项重点项目


Targeted analysis of landslide stability considering displacement tractionTargeted analysis of landslide stability considering displacement traction
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Chongqing Jiaotong University,School of Smart city

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Special key projects for Chongqing technological innovation and application development

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    摘要:

    准确评估滑坡风险等级为防灾减灾提供重要支撑。本文提出一种考虑位移牵引的滑坡稳定性靶向分析方法。该方法充分考虑各监测单点间位移向量的牵引关联特征,通过改进麻雀搜索算法(Improving Sparrow Search Algorithm, ISSA)结合K-means聚类算法依据监测点的位移特征数据进行聚类分析,将单体滑坡划分为若干单元形成靶向区域,构建滑坡单元对应风险类别的评价样本集;接着在滑坡靶区基础上对滑坡的地表粗糙度、高程和坡度等11个影响因子通过建立Stacking模型实施稳定性靶向分析。最后,对比本文方法与常规格网单元划分方法,风险评价准确率、F1-score和Kappa系数指标分别提高了2.15%、1.30%和3.75%。

    Abstract:

    Accurately assessing the risk level of landslides is of great significance for disaster prevention and mitigation. In this research, a method of landslide stability targeting analysis considering displacement traction is proposed, which considers the traction correlation characteristics of displacement vectors between monitoring points and carries out the optimal grid unit division of landslides. Through the Improving Sparrow Search Algorithm (ISSA) combined with the K-means clustering algorithm, clustering analysis was executed based on the displacement characteristics of the monitoring points and combined with the optimal grid unit to form the target area, and the assessment sample set of the corresponding risk category of the landslide unit was constructed. Further, on the basis of the landslide target area, the stability targeting analysis of 11 influencing factors, such as surface roughness, elevation, slope, and so on, was carried out by using the Stacking model. The experimental results show that compa

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  • 收稿日期:2024-12-04
  • 最后修改日期:2025-01-13
  • 录用日期:2025-01-22
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