水利水电技术（中英文）2024，Vol.55Issue(11)：202-211,10.DOI:10.13928/j.cnki.wrahe.2024.11.017
黄土掺量对河道粉砂力学性能改良研究
Study on improvement of mechanical properties of silt in river channel by loess content
摘要
Abstract
[Objective]In order to explore the law of influence of loess content on physical and mechanical characteristics of river silt and achieve the purpose of improving sandy soil,[Methods]combined with the practical problems faced by road engineering in Taigu District,Jinzhong City,Shanxi Province,a series of laboratory tests were carried out to explore the effects of different lo-ess content and water content on the physical characteristics of river silt,shear strength,permeability and so on.[Results]The results showed that the silt permeability coefficient decreased with the increase of loess content,and the range gradually tended to be gentle,and the critical hydraulic slope gradually increased.The shear strength increases with the increase of loess content and decreases with the increase of water content.A critical value occurs when the loess content is 15%and the water content is 9%.[Conclusion]The results show that the loess content can affect the maximum dry density,pore ratio and relative compactness of silt,which significantly improves the soil compaction index and is conducive to the improvement of soil compaction and bearing capacity.Considering the cost of the project and the actual situation of the local area,it is suggested to set the loess content at 15%,which can achieve the purpose of improving the sandy soil.关键词
粉砂/黄土掺量/含水率/抗剪强度/渗透系数/影响因素Key words
silty soil/loess content/water content/shear strength/permeability coefficient/influence factor分类
建筑与水利引用本文复制引用
闫傲坤,李芒原,李国超,杨正仓,毛海涛..黄土掺量对河道粉砂力学性能改良研究[J].水利水电技术（中英文）,2024,55(11):202-211,10.基金项目
国家自然科学青年基金项目(42207102) （42207102）
山西省自然科学基金面上项目(202103021224151 （）
202103021223132) （）
山西农业大学省改革高层次人才引进项目(2021XG009) （2021XG009）
