安全与环境工程2024，Vol.31Issue(5)：102-111,10.DOI:10.13578/j.cnki.issn.1671-1556.20230346
不同降雨类型对中层堆积层滑坡变形的影响
Deformation influence of rainfall types on medium-seated colluvial landslide
摘要
Abstract
Colluvial landslides are widely distributed in China,whose main inducing factor is rainfall infiltration.The common characteristic of rainfall-induced landslide is that its deformation increases significantly during the rainy season.Xuetangbang landslide was taken as an example of rainfall-induced colluvial landslide with medi-um thickness.The relationship between landslide deformation and rainfall types was studied by field investiga-tion,multi-source deformation monitoring and numerical simulation.The response difference of short-time rain-storm and long-time moderate rain on landslide deformation was analyzed.The results are as follows:rainfall is the main trigger of Xuetangbang landslide and the landslide displays the step-like deformation characteristic dur-ing the rainy season.Under the influence of short-time rainstorm,due to the influence of landslide mass with different permeability and thickness,the saturation area of the landslide is relatively narrow,and the deforma-tion of the landslide is weak.However,under the influence of long-term moderate rain,the pore water pressure of the area at the middle and rear of the landslide increases,the deformation of the landslide is strong,and the obvious step-type deformation of landslide occurs.关键词
堆积层滑坡/滑坡变形/降雨类型/数值模拟/滑坡监测/学堂塝滑坡Key words
accumulation landslide/landslide deformation/rainfall type/numerical simulation/landslide monitor-ing/Xuetangbang landslide分类
资源环境引用本文复制引用
张明晓,李德营,倪冰冰,王诗仪,游绍强..不同降雨类型对中层堆积层滑坡变形的影响[J].安全与环境工程,2024,31(5):102-111,10.基金项目
国家自然科学基金项目(41772310) （41772310）
