摘要
影响黄土湿陷性的因素很多,包括土的初始含水率、干密度、孔隙比等指标,各因素对湿陷性的影响较为复杂。本文根据新建中兰铁路室内试验结果,分析了大厚度黄土湿陷性影响因素,得出了黄土自重湿陷系数与初始含水率、孔隙比、干密度、饱和度和液性指数具有较高的相关性,与塑性指数、压缩系数和压缩模量相关性较弱,通过SPSS软件建立了陇西地区黄土自重湿陷系数与各影响因子的线性回归方程,对本地区快速评价黄土场地湿陷等级具有一定的参考价值。
There are many factors affecting the collapsibility of loess,including the initial water content,dry density,void ratio and other indicators of soil.The influence of each factor on the collapsibility is complex.Based on the indoor test results of the newly-built Zhongwei-Lanzhou railway,the influencing factors of the collapsibility of large thickness loess are analyzed,and the self weight collapsibility coefficient of loess and the initial water content,void ratio,dry density Saturation and liquid index have high correlation,but weak correlation with plasticity index,compression coefficient and compression modulus.The linear regression equation between loess self weight collapsibility coefficient and various influencing factors in Longxi area is established by SPSS software,which has a certain reference value for rapid evaluation of loess site collapsibility grade in this area.
作者
程富强
CHENG Fuqiang(China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China)
出处
《地质装备》
2022年第1期31-37,共7页
Equipment for Geotechnical Engineering
关键词
陇西地区
黄土
湿陷系数
评价方法
回归方程
Longxi region
loess
collapsibility coefficient
evaluation method
regression equation
