中国地质灾害与防治学报2026，Vol.37Issue(4)：110-123,14.DOI:10.16031/j.cghc.202509021
黄河上游戈龙布滑坡地震稳定性研究
Seismic stability analysis of the Gelongbu landslide in the upper reaches of the Yellow River
摘要
Abstract
The Gelongbu landslide is located on both banks of the Hutiao Gorge in the middle section of the Jishixia Canyon,in the upper reaches of the Yellow River.This region lies at the geomorphological transition zone between the Qinghai-Xizang Plateau and the Loess Plateau,where geological and geomorphological conditions are highly complex.In recent years,moderate to strong earthquakes have occurred frequently.In particular,following the 2023 Jishishan Ms 6.2 earthquake,seismic hazard and earthquake-induced landslide risks in this area have attracted increasing attention.In this study,high-precision digital elevation models(DEMs)and orthophotos obtained through UAV aerial surveying were used to conduct a detailed analysis of the geometric characteristics of the Gelongbu landslide.FLAC3D numerical simulations were then performed to identify potential hazard zones under seismic loading.Combined with landslide dynamics theory and regional topographic-geomorphological features,the potential extent of landslide movement was further predicted and assessed.In addition,a hazard index method was adopted to quantitatively evaluate the risk of earthquake-induced landslides and collapses by calculating seismic stability under ground motions with different exceedance probabilities,and by estimating potential hazardous sectors and sliding distances.The results indicate that the eastern and western flanks of the Gelongbu landslide's accumulation zone are relatively steep and are highly susceptible to failure when subjected to seismic intensities of VIII or higher.The calculated slope hazard index ranges from 12 to 18,corresponding to medium to high hazard levels.In the event of failure,the predicted sliding distances of the eastern and western flanks are approximately 238 m and 264 m,respectively.Material entering the Yellow River would potentially cause severe impacts on river-channel stability and downstream safety.This research provides important scientific guidance for the identification,monitoring,early warning,and mitigation of hazards associated with the Gelongbu landslide.关键词
黄河/滑坡/几何特征/FLAC3D/危险性分析Key words
Yellow River/landslide/geometric characteristics/FLAC3D/seismic hazard assessment分类
天文与地球科学引用本文复制引用
付英闻,谢虹,李智敏,许世阳,马冀,朱俊文..黄河上游戈龙布滑坡地震稳定性研究[J].中国地质灾害与防治学报,2026,37(4):110-123,14.基金项目
甘肃省陇原青年英才项目(2023) （2023）
中国地震局地震科技星火计划项目(XH23044C) （XH23044C）
青海省重点研发与转化计划项目(2022-SF-138) （2022-SF-138）
甘肃省自然科学基金(24JRRA748) （24JRRA748）
积石山县区域地震活动构造环境探查与监测项目(2403-622927-04-05-815318) （2403-622927-04-05-815318）
