地质通报2025，Vol.44Issue(6)：1076-1086,11.DOI:10.12097/gbc.2023.11.034
考虑滑坡活动性的金沙江上游白玉-巴塘段滑坡易发性评价
Landslide susceptibility evaluation in the Baiyu-Batang section of upper Jinsha River considering landslide activity
摘要
Abstract
[Objective]This paper optimizes landslide samples based on landslide activity to improve the accuracy of landslide susceptibility evaluation.[Methods]The terrain and landforms in the upper of Jinsha River are complex,with strong tectonic activity and the developed landslide disasters.The Baiyu-Batang section of the upper Jinsha River is selected as the key research area,and remote sensing interpretation,InSAR deformation detection,and field investigation techniques are used to identify and analyze landslide activity.All landslides were divided into two datasets:A(active landslides)and B(active landslides and inactive landslides).Eight factors,such as elevation,slope angle,slope direction,engineering geological units,distance to fault,seismic peak ground acceleration,distance to river and NDVI,were selected to complete the landslide susceptibility evaluation by weighted information model.[Results]The results show that the AUC based on A and B datasets are 0.855 and 0.810,respectively,indicating that satisfied landslide susceptibility results have been achieved.The very high and high landslide susceptibility is mainly distributed along the Jinsha River and Jiangqu River,and show an obvious band distribution trend along water systems.The middle landslide susceptibility is mainly distributed in the areas between the longitudinal valleys,and the low landslide susceptibility is mainly distributed in flat areas.[Conclusions]The accuracy of landslide susceptibility based on A dataset is higher than that of B dataset,and the identification ability of very high and high landslide susceptibility areas is relatively improved.So,landslide activity can effectively improve the landslide susceptibility accuracy,and is an important factor to be considered in the landslide susceptibility evaluation model.The proposed study ideas and methods provide an important reference for promoting landslide susceptibility evaluation in alpine gorge areas.关键词
滑坡易发性/滑坡活动性/金沙江/加权信息量模型Key words
landslide susceptibility/landslide activity/Jinsha River/weighted information model分类
天文与地球科学引用本文复制引用
邵慰慰,杨志华,吴瑞安,郭长宝,时红莲,郁鹏飞,麦希贸..考虑滑坡活动性的金沙江上游白玉-巴塘段滑坡易发性评价[J].地质通报,2025,44(6):1076-1086,11.基金项目
资源与环境信息系统国家重点实验室开放基金项目《基于滑坡活动性差异特征的川藏铁路金沙江段滑坡易发性研究》、国家自然科学基金项目《融合斜坡先存形变的活动断裂带潜在地震滑坡危险性预测研究》(批准号:42277180)、中国地质调查局项目《全国重大工程地质安全风险区划与综合评价》(编号:DD20221816)Supported by the Opening Foundation of the State Key Laboratory of Resources and Environmental Information System,National Natural Science Foundation of China(No.42277180),and China Geological Survey project(No.DD20221816) （批准号:42277180）
