黄土-红粘土复合材料电阻率和纵波速度的低温响应研究

IF 4.2 2区 工程技术 Q3 ENGINEERING, ENVIRONMENTAL
Bin Chen, Qiang Sun, Jingjing Nan, Pengfei Li, Chao Lyu, Yuan Xin, Pengda Ma
{"title":"黄土-红粘土复合材料电阻率和纵波速度的低温响应研究","authors":"Bin Chen,&nbsp;Qiang Sun,&nbsp;Jingjing Nan,&nbsp;Pengfei Li,&nbsp;Chao Lyu,&nbsp;Yuan Xin,&nbsp;Pengda Ma","doi":"10.1007/s10064-025-04151-z","DOIUrl":null,"url":null,"abstract":"<div><p>Loess in Northwest China is widely deposited atop the Hipparion Red Clay. Unlike red clay stratigraphy, loess is mostly seasonally frozen, with physical properties that change easily at low temperatures, increasing the risk of natural disasters like slope instability and landslides. To study the low-temperature properties of loess and red clay strata, loess-red clay composite samples with varying water contents were subjected to freezing at different low temperatures. Their resistivity and P-wave velocity were measured postfreezing. The results indicate that as water content increases, soil resistivity decreases due to enhanced electrical conduction, with a slower rate of decline. When the temperature decreases, resistivity rises gradually in the unfrozen stage (25 °C to − 5 °C) and increases rapidly in the frozen stage (–10 °C to − 20 °C) as water transitions to solid ice. At low water contents, soil resistivity is more sensitive to temperature changes due to reduced liquid conductive pathways. P-wave velocity decreases almost linearly with increasing water content in unfrozen soils, but this trend reverses in frozen soils. With decreasing temperature, P-wave velocity shows minimal change in unfrozen soils but increases significantly after freezing, with greater sensitivity to temperature changes at higher water contents. This experiment provides valuable data support for engineering construction, soil frost heave risk assessment, and geophysical investigations in permafrost regions. </p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":4.2000,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of the low-temperature responses of the resistivity and P-wave velocity of the loess–red clay composite\",\"authors\":\"Bin Chen,&nbsp;Qiang Sun,&nbsp;Jingjing Nan,&nbsp;Pengfei Li,&nbsp;Chao Lyu,&nbsp;Yuan Xin,&nbsp;Pengda Ma\",\"doi\":\"10.1007/s10064-025-04151-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Loess in Northwest China is widely deposited atop the Hipparion Red Clay. Unlike red clay stratigraphy, loess is mostly seasonally frozen, with physical properties that change easily at low temperatures, increasing the risk of natural disasters like slope instability and landslides. To study the low-temperature properties of loess and red clay strata, loess-red clay composite samples with varying water contents were subjected to freezing at different low temperatures. Their resistivity and P-wave velocity were measured postfreezing. The results indicate that as water content increases, soil resistivity decreases due to enhanced electrical conduction, with a slower rate of decline. When the temperature decreases, resistivity rises gradually in the unfrozen stage (25 °C to − 5 °C) and increases rapidly in the frozen stage (–10 °C to − 20 °C) as water transitions to solid ice. At low water contents, soil resistivity is more sensitive to temperature changes due to reduced liquid conductive pathways. P-wave velocity decreases almost linearly with increasing water content in unfrozen soils, but this trend reverses in frozen soils. With decreasing temperature, P-wave velocity shows minimal change in unfrozen soils but increases significantly after freezing, with greater sensitivity to temperature changes at higher water contents. This experiment provides valuable data support for engineering construction, soil frost heave risk assessment, and geophysical investigations in permafrost regions. </p></div>\",\"PeriodicalId\":500,\"journal\":{\"name\":\"Bulletin of Engineering Geology and the Environment\",\"volume\":\"84 3\",\"pages\":\"\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2025-02-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Engineering Geology and the Environment\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10064-025-04151-z\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Engineering Geology and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10064-025-04151-z","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0

摘要

中国西北地区的黄土广泛沉积在Hipparion红粘土之上。与红粘土地层不同,黄土大部分是季节性冻结的,其物理性质在低温下很容易发生变化,增加了边坡不稳定和山体滑坡等自然灾害的风险。为研究黄土-红粘土地层的低温特性,对不同含水量的黄土-红粘土复合试样进行不同低温冻结。冻结后测量其电阻率和纵波速度。结果表明:随着含水量的增加,土壤电阻率随着导电性的增强而降低,但下降速度较慢;当温度降低时,在非冻结阶段(25℃~−5℃)电阻率逐渐升高,在冻结阶段(-10℃~−20℃),随着水向固体冰的转变,电阻率迅速升高。在低含水量条件下,土壤电阻率对温度变化更为敏感,这是由于液体导电途径减少所致。在冻土中,纵波速度随含水量的增加几乎呈线性下降,而在冻土中则相反。随着温度的降低,未冻结土壤的纵波速度变化最小,冻结后纵波速度显著增加,且含水量越高,纵波速度对温度变化的敏感性越高。该试验为多年冻土区的工程建设、土壤冻胀风险评估和地球物理调查提供了有价值的数据支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study of the low-temperature responses of the resistivity and P-wave velocity of the loess–red clay composite

Loess in Northwest China is widely deposited atop the Hipparion Red Clay. Unlike red clay stratigraphy, loess is mostly seasonally frozen, with physical properties that change easily at low temperatures, increasing the risk of natural disasters like slope instability and landslides. To study the low-temperature properties of loess and red clay strata, loess-red clay composite samples with varying water contents were subjected to freezing at different low temperatures. Their resistivity and P-wave velocity were measured postfreezing. The results indicate that as water content increases, soil resistivity decreases due to enhanced electrical conduction, with a slower rate of decline. When the temperature decreases, resistivity rises gradually in the unfrozen stage (25 °C to − 5 °C) and increases rapidly in the frozen stage (–10 °C to − 20 °C) as water transitions to solid ice. At low water contents, soil resistivity is more sensitive to temperature changes due to reduced liquid conductive pathways. P-wave velocity decreases almost linearly with increasing water content in unfrozen soils, but this trend reverses in frozen soils. With decreasing temperature, P-wave velocity shows minimal change in unfrozen soils but increases significantly after freezing, with greater sensitivity to temperature changes at higher water contents. This experiment provides valuable data support for engineering construction, soil frost heave risk assessment, and geophysical investigations in permafrost regions. 

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Bulletin of Engineering Geology and the Environment
Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合
CiteScore
7.10
自引率
11.90%
发文量
445
审稿时长
4.1 months
期刊介绍: Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信