西北工程技术学报2025，Vol.24Issue(4)：298-304,311,8.DOI:10.26974/j.cnki.XBGC.2025.04.002
裂隙位置对黄土边坡渗流特性的影响分析
Analysis of the Effect of Fracture Location on the Seepage Characteristics of Loess Slopes
摘要
Abstract
This study investigates the influence of fracture distribution on the seepage characteristics of loess slopes through indoor model tests conducted under rainfall conditions,wherein fractures are present on both the slope top and surface.The rainfall infiltration process is recorded in real time using an industrial camera,allowing for the analysis of the dominant seepage mechanisms,characteristics of the advancing wetting front,and the expansion of the transient saturation zone associated with the fractures.Numerical analyses are performed using the saturation-unsaturated seepage field module of GeoStudio software,yielding results that align closely with the experimental findings.The results indicate that fractures quickly become filled with water,thereby providing a preferential pathway for rainfall infiltration and establishing a dominant flow pattern,which leads to the gradual formation of a funnel-shaped transient saturation zone.When fractures are at the top,the transient saturation zone is observed on both sides of the fracture;when at the surface,it is near the foot.As the advantageous flow from the fractures continues,the transient saturation zone expands outward,with the infiltration process shifting from an initial predominant vertical flow to a predominantly horizontal flow.This study offers valuable insights for addressing complex seepage issues in loess slope engineering.关键词
黄土边坡/裂隙位置/模型试验/数值模拟/渗流特性Key words
loess slope/fissure location/model test/numerical simulation/seepage characteristics分类
建筑与水利引用本文复制引用
李兵,董旭光,张刚,马渊博..裂隙位置对黄土边坡渗流特性的影响分析[J].西北工程技术学报,2025,24(4):298-304,311,8.基金项目
宁夏自然科学基金项目(2023AAC03038,2023AAC02024) （2023AAC03038,2023AAC02024）
宁夏回族自治区重点研发计划项目(2021BEG03023) （2021BEG03023）
