摘要
在最佳含水率条件下制备了土石质量比分别为9∶1,7∶3,5∶5,4∶6,压实度分别为90%,92%,95%,98%,100%的20个多相土石复合介质试件,通过测定各试件在吸水饱和过程中的电阻率变化,明确了其变化过程与土石比、压实度等物理参数间的响应规律及产生原因,同时将饱水过程中压实度与饱和度指标进行关联,最后采用非饱和岩石电阻率-饱和度关系模型对土石复合介质电阻率随饱和度变化规律进行了拟合,拟合结果总体良好.所得结果可为利用电阻率来检测土石坝坝体材料吸水饱和形成的渗漏通道提供数据支撑.
The 20 soil-rock composite media test specimens with soil-rock ratio of 9∶1,7∶3,5∶5,4∶6,and the compaction degrees of 90%,92%,95%,98%,100%were prepared in the condition of optimum moisture content.Through measuring the variations of resistivity during the water absorption process,the variable relationship between the resistivity and soil-rock ratio,compaction degree as well as their causes were clarified,moreover,the compaction degree and saturation index were correlated during the saturation process,finally,the unsaturated model of resistivity-saturation was used to fit the variation law of soil-rock composite media resistivity with saturation,the generally fitting results are good.This study can provide data support for the use of resistivity to detect seepage channels formed by water absorption and saturation of soil-rock dam materials.
作者
王日升
赵明阶
王日强
WANG Risheng;ZHAO Mingjie;WANG Riqiang(College of Hehai,Chongqing Jiaotong University,Chongqing 400074,China;College of Civil Engineering,Shandong Jiaotong University,Jinan 250347,China;Dongping Lake Engineering Bureau of Shandong Yellow River,Taian 271000,China)
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2019年第1期94-100,共7页
Journal of Building Materials
基金
国家自然科学基金资助项目(51279219)
关键词
土石复合介质
压实度
饱和度
电阻率
soil-rock composite media
compaction degree
saturation
resistivity
