土的颗粒组成对电阻率的影响试验研究

查甫生; 刘松玉; 杜延军; 崔可锐

doi:10.13204/j.gyjz201303015

土的颗粒组成对电阻率的影响试验研究

doi: 10.13204/j.gyjz201303015

1.
1. 合肥工业大学资源与环境工程学院,合肥230009;
2.
2. 东南大学岩土工程研究所,南京210096

基金项目:

国家自然科学基金项目(41172273,40802079)

详细信息

作者简介:
查甫生,男,1978年出生,博士,副教授. 电子信箱:zhafusheng@163.com

中图分类号: P642.114
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- 文章访问数: 139
- HTML全文浏览量: 12
- PDF下载量: 95
- 被引次数: 0
出版历程
- 收稿日期: 2012-06-12
- 刊出日期: 2013-03-20

EFFECT OF SOIL GRAIN COMPOSITION ON SOIL ELECTRICAL RESISTIVITY

1.
1. School of Resources and Environment Engineering,Hefei University of Technology,Hefei 230009,China;
2.
2. Institute of Geotechnical Engineering,Southeast University of Technology,Nanjing 210096,China

摘要

摘要: 土的电阻率是土的基本物性参数之一,与土的物理力学性质及结构特征等息息相关。土的固体颗粒组成是影响土体电阻率的重要因素之一。以膨胀土、黄土及掺灰改良膨胀土为研究对象,通过系统的室内试验,研究具有不同固体颗粒组成的土的电阻率特性,揭示其影响机制。针对黏土颗粒表面导电性难以测定的现实,引入间接测量方法,并通过试验获得膨胀土表面导电性的大小;然后,试验研究不同比例组成的膨胀土-黄土混合物的电阻率大小,分析不同固体颗粒组成对土电阻率的影响;最后,通过掺灰改良膨胀土的电阻率测试,探讨掺灰率及养护龄期对改良膨胀土电阻率的影响。
- 电阻率 /
- 颗粒组成 /
- 膨胀土 /
- 黄土
Abstract: Soil electrical resistivity is one of the fundamental physical property parameters of soil,and is closely related to the properties of physical,mechanical parameters and microstructure characteristics of soils.A systemic experimental study was carried out to study the effect of solid composition on soil electrical resistivity.A simple method was put forward to evaluate the conductivity of solid composition of soil.Based on the test results,the electrical resistivity of test expansive soil was got.Based on the test of the electrical resistivity of additives stabilized expansive soil,it was found that the electrical resistivity of stabilized expansive soils was increased with curing time.Test results of the electrical resistivity of the admixture of expansive soil and loess showed that soil electrical resistivity was decreased with the increase in liquid limit and plastic index.
- electrical resistivity /
- grain composition /
- expansive soil /
- loess

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参考文献(13)

[2] Abu-Hassanein Z,Benson C ,Blotz L. Electrical Resistivity ofCompacted Clays[J]. J. Geotech. Engrg.,ASCE,1996,122(5):397－406.

Archie G E. The Electric Resistivity Log as Aid in DeterminingSome Reservoir Characteristics[J]. Trans.,American Institute ofMining,Metallurgical and Petroleum Engineers,1942,146:54－61.

[3] McCarter W J,Desmazes P. Soil Characterization Using ElectricalMeasurements[J]. Geotechnique,1999,47(1):179－183.

[4] 查甫生.结构性非饱和土的电阻率特性及应用研究[D].南京:东南大学,2007.

[5] Worthington P F. The Evaluation of Shaly-Sand Concepts inReservoir Evaluation[J]. The Log Analyst,1985,24(1):1－18.

[6] Palacky G J. Clay Mapping Using Electromagnetic Methods[M].First Break 5,1987:295－306.

[7] Yoon G L,Oh M H,Park J B. Laboratory Study of Landfill LeachAte Effect on Resistivity in Unsaturated Soil Using ConePenetrometer[J]. Environmental Geology,2002,43:18－28.

[8] 查甫生,刘松玉,杜延军,等.基于电阻率法的膨胀土吸水膨胀过程中结构变化定量研究[J].岩土工程学报,2008,30(12):1832－1839.

[9] 查甫生,刘松玉,杜延军,等.黄土湿陷过程中微结构变化规律的电阻率法定量分析[J].岩土力学,2010,31(6):1692－1698.

[10] 刘松玉,查甫生,于小军.土的电阻率室内测试技术研究[J].工程地质学报,2006,14(2):216－222.

[11] Rinaldi V A,Cuestas G A. Ohmic Conductivity of a CompactedSilty Clay[J]. Journal of Geotechnical and GeoenvironmentalEngineering,2002,128(10):824－835.

[12] 查甫生,刘松玉,杜延军,等.电阻率法评价膨胀土改良的物化过程[J].岩土力学,2009,30(6):1711－1718.

[13] Mitchell J K. Fundamentals of Soil Behavior[M]. New York:Wiley ＆ Sons,1993.

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