人民长江2024，Vol.55Issue(1)：135-142,207,9.DOI:10.16232/j.cnki.1001-4179.2024.01.019
地层倾角及侧向摩擦对滑坡影响的物理模拟研究
Physical simulation study on influence of stratigraphic dip and lateral friction on landslides
摘要
Abstract
Landslides are a common geological hazard in northern Guizhou Province,and the government invests a lot every year to carry out related governance and research.However,the simulation analysis of landslide deformation and its evolutionary impact is still very insufficient.For this purpose,based on the field survey and investigation of typical landslides in the Northern Guizhou Province,six groups of sand-box models with different stratigraphic dip and lateral friction conditions were designed to study landslide deformation.PIV technology was applied to analyze and explore the strain rate field during the evolution process of land-slide deformation of the analogue modelling test.The results showed that:① The stratigraphic dip has a strong effect on land-slides.Under the condition of the low-dip angle,the deformation evolution of the landslide exhibits a diachronism phenomenon.Under the condition of the high-dip angle,the landslide mainly undergoes gradual propagation and deformation from the rear zone to the middle zone,and then to the front zone.②The strength of lateral friction affects the geometric shape of the landslide.Land-slides with high lateral friction form a strip-shape accumulated body.On the contrary,landslides with low-friction form an ap-proximate elliptical shape.Analogue modelling results of this study can provide structural physics references for understanding the evolution process of landslides in northern Guizhou Province.关键词
滑坡变形/演化过程/地层倾角/侧向摩擦作用/物理模拟/黔北地区Key words
landslide deformation/evolution process/stratigraphic dip/lateral friction action/physical simulation/northern Guizhou Province分类
天文与地球科学引用本文复制引用
何文刚,赵远雯,何鸣,袁达雄..地层倾角及侧向摩擦对滑坡影响的物理模拟研究[J].人民长江,2024,55(1):135-142,207,9.基金项目
贵州省科技厅项目(黔科合基础-ZK[2022]一般571) （黔科合基础-ZK[2022]一般571）
遵义师范学院大创项目(S202210664096) （S202210664096）
国家留学基金委项目(CSC201908520019) （CSC201908520019）
