河南城建学院学报2025，Vol.34Issue(5)：7-13,27,8.DOI:10.14140/j.cnki.hncjxb.2025.05.002
铁氧化物对花岗岩全风化土渗透性的影响机制
Influence mechanisms of iron oxides on permeability of completely weathered granite soil
摘要
Abstract
To analyze the mechanism by which iron oxides affect the permeability of completely weathered gran-ite soil,completely weathered granite soil from southeastern Guangxi was selected as the research object.Fer-rous sulfate solution was used as the permeation solution in indoor soil column infiltration tests to reveal the pore-blocking patterns caused by the precipitation and accumulation of iron oxides under permeation.The re-sults show that,during the infiltration process,precipitation and accumulation of iron oxides significantly reduce the permeability of completely weathered granite soil and simultaneously alter the structural characteristics of soil particles.The Bianchi model can effectively fit the permeability blockage process of completely weathered granite soil.Scanning Electron Microscope(SEM)observations indicated that iron oxides mainly deposit in soil sample pores,and in some cases connect clay minerals in the soil in a bridge-like manner,forming aggregates.关键词
铁氧化物/花岗岩全风化土/渗透性/土柱试验Key words
iron oxides/completely weathered granite soil/permeability/soil column test分类
土木建筑引用本文复制引用
邹伟林,翁峻择,李玲,尹鉴..铁氧化物对花岗岩全风化土渗透性的影响机制[J].河南城建学院学报,2025,34(5):7-13,27,8.基金项目
国家自然科学基金项目(42167021) （42167021）
