典型文献
Effect of freeze-thaw cycle on hydraulic conductivity of compacted clayey soil
文献摘要：
When filling embankment dams in cold regions,engineers must solve two freeze-thaw cycle(FTC)-induced soil problems.First,compacted soil constituting the dam is subjected to the FTC during dam construction.Second,loose soil material (LSM),which is subjected to the FTC,fills the dam.To investigate the effects of the aforementioned two problems on the hydraulic conductivity of compacted clayey soil,a series of permeation tests on clayey soil compacted before and after FTC were conducted in this study.The results showed that for the first problem,the hydraulic conductivity of compacted clayey soil subjected to one FTC significantly increases by two to three orders of magnitude because FTC-induced cracks can cause preferential flow in the permeation process.For the second problem,when the FTC number is less than a critical number,the FTC of the LSM may result in the development of united soil particles,thereby increasing the effective porosity ratio and hydraulic conductivity of the compacted soil.It was discovered that the hydraulic conductivity of compacted soil can increase by one to three times when the LSM is subjected to 10 FTCs.When the FTC number exceeds a critical number,the effective porosity ratio and hydraulic conductivity of the compacted soil may decrease with the FTC of the LSM.This should be investigated in future studies,and the results can be used to improve engineering management processes when filling embankment dams during winter in cold regions.
文献关键词：
中图分类号：
作者姓名：
GUO Lei;YU Qi-hao;YIN Na;ZHANG Dong-ming;ZHANG Deng-ping;REN Xiu-ling;YOU Yan-hui;ZHANG Zhen-yu;BING Hui;CHEN Shi-jie
作者机构：
State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;Beiluihe Observation Station of Frozen Soil Environment and Engineering,Northwest Institute of Eco-Environment and Resource,Chinese Academy of Sciences,Lanzhou 730000,China;Gansu City Real Estate Development CO.,Ltd.,Lanzhou 730000,China;Yalong River Hydropower Development Company,Ltd.,Chengdu 610051,China
文献出处：
引用格式：
[1]GUO Lei;YU Qi-hao;YIN Na;ZHANG Dong-ming;ZHANG Deng-ping;REN Xiu-ling;YOU Yan-hui;ZHANG Zhen-yu;BING Hui;CHEN Shi-jie-.Effect of freeze-thaw cycle on hydraulic conductivity of compacted clayey soil)[J].山地科学学报（英文版）,2022(02):606-614
A类：
FTCs
B类：
Effect,freeze,thaw,cycle,hydraulic,conductivity,compacted,clayey,soil,When,filling,embankment,dams,cold,regions,engineers,must,solve,two,induced,problems,First,constituting,subjected,during,construction,Second,loose,material,LSM,which,fills,To,effects,aforementioned,series,permeation,tests,before,after,were,conducted,this,study,results,showed,that,first,significantly,increases,three,orders,magnitude,because,cracks,preferential,flow,For,second,when,number,less,than,critical,may,development,united,particles,thereby,increasing,effective,porosity,ratio,It,was,discovered,times,exceeds,decrease,This,should,investigated,future,studies,used,improve,engineering,management,processes,winter
AB值：
0.401211
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