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1.自然资源部城市国土资源监测与仿真重点实验室,广东 深圳,518034
2.深圳市规划和自然资源数据管理中心,广东 深圳,518034
3.中国地质大学(武汉)地球物理与空间信息学院,湖北 武汉,430074
Received:05 May 2025,
Published:05 June 2025
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陈学业,齐小帅,彭博,等.结合SBAS-InSAR技术与深度神经网络的滑坡早期识别[J].武汉大学学报(信息科学版),2025,50(6):1210-1224.
CHEN XueYe,QI Xiaoshuai,PENG Bo,et al.Early Landslide Identification by Integrating SBAS-InSAR and Deep Neural Network[J].Geomatics and Information Science of Wuhan University,2025,50(6):1210-1224.
陈学业,齐小帅,彭博,等.结合SBAS-InSAR技术与深度神经网络的滑坡早期识别[J].武汉大学学报(信息科学版),2025,50(6):1210-1224. DOI:10.13203/j.whugis20250139
CHEN XueYe,QI Xiaoshuai,PENG Bo,et al.Early Landslide Identification by Integrating SBAS-InSAR and Deep Neural Network[J].Geomatics and Information Science of Wuhan University,2025,50(6):1210-1224. DOI:10.13203/j.whugis20250139
滑坡灾害严重威胁山区居民的生命财产安全,其早期精准识别是防灾减灾的关键。以中国三峡库区秭归县为例,首先,通过综合评估合成少数类过采样(synthetic minority over-sampling technique,SMOTE)、汤姆克链接欠采样(Tomek Link)和SMOTETomek综合采样3种数据平衡方法以及卷积神经网络、多层感知机(multilayer perceptron
MLP)和长短期记忆网络3种深度神经网络模型的适用性,开展滑坡易发性评价,并提取不稳定斜坡单元;其次,利用小基线集合成孔径雷达干涉测量技术反演研究区地表形变速率,并通过地形可视性分析和最大坡度向投影得到斜坡方向上的真实形变结果;最后,耦合不稳定斜坡单元与地表形变结果以划分潜在滑坡区,将其叠加在谷歌地球上目视解译进行滑坡早期识别,并与野外调查资料进行对比验证。结果表明: (1)MLP-Tomek Link联合模型在准确率、精确度、
F
1分数等指标上超过其他模型,为此区域的最佳滑坡易发性评价模型; (2)秭归县2019 — 2022年的有效形变结果集中分布于中北部和东南部构造断裂带,其最大坡度向的年均形变速率为0 ~ 112.68 mm/a; (3)共筛选出30处
潜在滑坡区,其中21处成功识别滑坡灾害,滑坡早期识别准确率达70%。研究成果可以为滑坡风险评价与管理、滑坡监测预警与防治等提供技术和方法参考。
Objectives
2
Aiming at the current geological disaster prevention and control work
there are problems such as insufficient accuracy of investigation and evaluation
inadequate application of advanced means
and weak ability of hidden danger identification and monitoring and early warning. Taking Zigui County in the hinterland of Three Gorges Reservoir Area
China as the study area
we develop quantitative and qualitative analysis methods of multi-source data and multi-model fusion. Focusing on the early identification of landslide hazards under the constraints of unstable slope unit and effective deformation aggregation area
we realize the early identification of landslide hazards based on the SBAS-InSAR technology and deep neural network model.
Methods
2
First
we construct a set of landslide early identification indexes covering landslide susceptibility
slope unit and surface deformation information
and comprehensively evaluate the applicability of three data balancing methods
namely
synthetic minority over-sampling technique (SMOTE)
Tomek Link under-sampling and SMOTETomek integrated sampling
as well as three deep neural network models
namely
convolutional neural network
multilayer perceptron (MLP) and long short-term memory network
to evaluate landslide susceptibility and extract unstable slope units. Second
we use small baseline subset interferometric synthetic aperture radar (SBAS-InSAR) to invert the surface deformation rate in the study area
and obtain the real deformation results in the slope direction based on the terrain visibility analysis and the maximum slope projection. Finally
we couple the unstable slope units with the surface deformation results to delineate the potential landslide areas
superimpose them on Google Earth for visual interpretation for the early identification of landslides
and verify them by comparing them with the field investigation data.
Results
2
(1) The joint MLP-Tomek Link model outperforms other models in terms of accuracy
precision
and
F
1 score
and is the best landslide susceptibility assessment model in the region. (2) The effective deformation results for 2019—2022 in Zigui County are concentrated in the north-central and southeastern tectonic fault zones
and the annual average deformation rate in the direction of its maximum slope ranges from 0-112.68 mm/a. (3) A total of 30 potential landslide zones are screened
and landslide hazards are successfully identified in 21 of them
with an accuracy of 70% in the early landslide identification.
Conclusions
2
The combination of SBAS-InSAR technology and deep neural network model can significantly improve the accuracy of early landslide identification
providing technical and methodological references for landslide risk evaluation and management
landslide monitoring
early warning and prevention.
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