华南地质2026，Vol.42Issue(1)：176-186,11.DOI:10.3969/j.issn.2097-0013.2026.01.010
三亚龙楼岭滑坡稳定性及破坏后运动特征分析
Numerical Simulation of Stability and Movement Characteristics after Failure of the Longlouling Landslide in Sanya
摘要
Abstract
Rainfall is one of key external forces leading to landslide instability,and its impact on slope stability becomes even more pronounced under the coupling effect of seismic activity and rainfall.Therefore,evaluating landslide stability under different rainfall conditions holds significant theoretical and practical importance for predicting and preventing landslide disasters.Taking the Longlou Ridge Cemetery landslide in Hainan as a case study,this research employs numerical simulation software for analysis.By combining field geological surveys with numerical simulations,it investigates the seepage field and stability of the landslide under various rainfall conditions,as well as the deformation of the landslide in its natural state and numerical simulation of the accumulation process post-failure.The results indicate that rainfall amount and intensity are critical factors influencing landslide stability.As rainfall increases in both amount and intensity,the infiltration range of rainwater expands,and the saturated zone within the slope gradually enlarges,leading to a rise in groundwater levels and potentially pushing the landslide into a marginally stable state.The stability coefficient of the landslide shows a negative correlation with both rainfall duration and intensity,with a more pronounced decline in stability during heavy rainfall events.During the post-failure movement of the landslide,the velocity of the sliding mass exhibits an initial acceleration followed by deceleration.The failure mode of the landslide is characterized as a typical"retrogressive failure,"where failure initiates at the slope toe and propagates backward,with the most significant displacement growth observed in the shallow soil layer of the sliding mass.The findings of this study provide valuable references for understanding landslide stability and disaster prevention under rainfall conditions.关键词
稳定性/降雨入渗/运动特征/数值模拟/龙楼岭滑坡/三亚Key words
stability/rainfall infiltration/movement characteristics/numerical simulation/Longlouling landslide/Sanya分类
天文与地球科学引用本文复制引用
刘公然..三亚龙楼岭滑坡稳定性及破坏后运动特征分析[J].华南地质,2026,42(1):176-186,11.基金项目
海南省地质局项目(HNDZDC-2025-2)、三亚市财政项目(KC2022026) （HNDZDC-2025-2）
