[1]潘超,刘松玉.重金属污染土的热导率特征试验研究[J].东南大学学报(自然科学版),2019,49(2):362-368.[doi:10.3969/j.issn.1001-0505.2019.02.023]
 Pan Chao,Liu Songyu.Experimental research on thermal conductivity characteristics of heavy metal contaminated soil[J].Journal of Southeast University (Natural Science Edition),2019,49(2):362-368.[doi:10.3969/j.issn.1001-0505.2019.02.023]
点击复制

重金属污染土的热导率特征试验研究()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第2期
页码:
362-368
栏目:
土木工程
出版日期:
2019-03-20

文章信息/Info

Title:
Experimental research on thermal conductivity characteristics of heavy metal contaminated soil
作者:
潘超刘松玉
东南大学交通学院, 南京 210096; 东南大学江苏省城市地下工程与环境安全重点实验室, 南京 210096
Author(s):
Pan Chao Liu Songyu
School of Transportation, Southeast University, Nanjing 210096, China
Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Southeast University, Nanjing 210096, China
关键词:
重金属污染土 热导率 含水率 干密度 预测方法
Keywords:
heavy metal contaminated soil thermal conductivity moisture content dry density prediction method
分类号:
TU411
DOI:
10.3969/j.issn.1001-0505.2019.02.023
摘要:
为了研究重金属污染土的热传导特征,在室内分别拌制了黏土、粉质黏土的不同重金属污染成分(Pb,Zn)、不同污染浓度N、不同含水率ω和干密度ρd的重金属污染土试样,采用非稳态热探针法对不同状态下的污染土体热导率进行了测试.试验结果显示,4种重金属污染土有相似的变化规律,即在相同的含水率下,热导率随污染浓度的增加而线性增大;在相同的污染浓度下,热导率随含水率的增加而呈指数关系增大,随干密度的增加而线性增大,与未污染土的表现特点相似.通过分析污染土归一化热导率与污染浓度的关系,建立了适用于重金属污土的热导率预测方法,可用于估算特定重金属污染土的热导率值.
Abstract:
To study the thermal transfer characteristics of heavy metal contaminated soil, the contaminated cohesive soil and silty clay soil with different types of pollutants(Pb, Zn), pollution concentration, moisture content, and dry density were mixed in the laboratory by hand. The transient probe was used to measure the thermal conductivity of soils under different conditions. The results show that four types of contaminated soils have following similar trends: under the same moisture content, the thermal conductivity of these soils increases linearly with the increase of the pollution concentration. On the same pollution concentration, the thermal conductivity of these soils increases in exponential function with the increase of the moisture content, and the thermal conductivity increases linearly with the increase of the dry density, which is similar with that of the uncontaminated soil. By analyzing the relationship between the normalized thermal conductivity and the pollution concentration, the prediction method for the thermal conductivity of the heavy metal contaminated cohesive soil and the silty clay soil is established. The method can be used to estimate the thermal conductivity of the specific heavy metal contaminated soil.

参考文献/References:

[1] 廖晓勇, 崇忠义, 阎秀兰, 等. 城市工业污染场地: 中国环境修复领域的新课题[J]. 环境科学, 2011, 32(3): 784-794. DOI:10.13227/j.hjkx.2011.03.024.
Liao X Y, Chong Z Y, Yan X L, et al. Urban industrial contaminated sites: A new issue in the field of environmental remediation in China[J]. Environmental Science, 2011, 32(3): 784-794. DOI:10.13227/j.hjkx.2011.03.024. (in Chinese)
[2] 刘松玉, 詹良通, 胡黎明, 等. 环境岩土工程研究进展[J]. 土木工程学报, 2016, 49(3): 6-30. DOI:10.15951/j.tmgcxb.2016.03.002.
Liu S Y, Zhan L T, Hu L M, et al. Environmental geotechnics: State-of-the-art of theory, testing and application to practice[J]. China Civil Engineering Journal, 2016, 49(3): 6-30. DOI:10.15951/j.tmgcxb.2016.03.002. (in Chinese)
[3] Hotz R D, Ge L. Investigation of the thermal conductivity of compacted silts and its correlation to the elastic modulus[J]. Journal of Materials in Civil Engineering, 2010, 22(4): 408-412. DOI:10.1061/(asce)mt.1943-5533.0000035.
[4] 刘松玉. 污染场地测试评价与处理技术[J]. 岩土工程学报, 2018, 40(1): 1-37.
  Liu S Y. Geotechnical investigation and remediation for industrial contaminated sites[J].Chinese Journal of Geotechnical Engineering,2018,40(1):1-37.(in Chinese)
[5] 韩立华,刘松玉,杜延军.一种检测污染土的新方法:电阻率法[J].岩土工程学报,2006,28(8):1028-1032.DOI:10.3321/j.issn:1000-4548.2006.08.019.
Han L H, Liu S Y, Du Y J. New method for testing contaminated soil: Electrical resistivity method[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(8): 1028-1032. DOI:10.3321/j.issn:1000-4548.2006.08.019. (in Chinese)
[6] 边汉亮, 刘松玉, 蔡国军, 等. 柴油污染土电阻率与热阻率的相关关系[J]. 东南大学学报(自然科学版), 2016, 46(S1): 129-134.
  Bian H L, Liu S Y, Cai G J, et al. Correlation of thermal resistivity and electrical resistivity of diesel contaminated soil[J].Journal of Southeast University(Natural Science Edition),2016,46(S1):129-134.(in Chinese)
[7] 陈善雄. 土的热导率[J]. 土工基础, 1997, 11(1): 54-56.
  Chen S X. On thermal conductivity of soils[J]. Soil Engineering and Foundation, 1997, 11(1): 54-56.(in Chinese)
[8] Abuel-Naga H M, Bergado D T, Bouazza A. Thermal conductivity evolution of saturated clay under consolidation process[J]. International Journal of Geomechanics, 2008, 8(2): 114-122. DOI:10.1061/(asce)1532-3641(2008)8:2(114).
[9] Abu-Hamdeh N H. Thermal properties of soils as affected by density and water content[J]. Biosystems Engineering, 2003, 86(1): 97-102. DOI:10.1016/s1537-5110(03)00112-0.
[10] Abu-Hamdeh N H, Reeder R C. Soil thermal conductivity: Effects of density, moisture, salt concentration, and organic matter[J]. Soil Sci Soc of Am J, 2000, 64(4): 1285-1290.
[11] 张涛, 蔡国军, 刘松玉. 南京地区典型土体热学特性与预测模型[J]. 东南大学学报(自然科学版), 2014, 44(3): 655-661. DOI:10.3969/j.issn.1001-0505.2014.03.036.
Zhang T, Cai G J, Liu S Y. Thermal properties and prediction model of typical soils in Nanjing area[J]. Journal of Southeast University(Natural Science Edition), 2014, 44(3): 655-661. DOI:10.3969/j.issn.1001-0505.2014.03.036. (in Chinese)
[12] 边汉亮. 基于电学热学参数的有机物污染场地工程特性评价方法研究[D]. 南京: 东南大学, 2017.
  Bian H L. Study of the engineering property evaluation method for organic contaminated sites based on the electrical and thermal parameters[D]. Nanjing: Southeast University, 2017.(in Chinese)
[13] 汪承维. 人工冻结盐渍土导热系数试验研究及其应用[D]. 淮南: 安徽理工大学, 2014.
  Wang C W. Tests about coefficient of thermal conductivity of artificial freezing saline soil and application[D]. Huainan: Anhui University of Science & Technology, 2014.(in Chinese)
[14] Hooper F C, Lepper F R. Transient heat flow apparatus for the determination of thermal conductivities[J]. Transactions of the American Society of Heating and Ventilating Engineers, 1950, 56(2): 309-324.
[15] 张延军,于子望,黄芮,等.岩土热导率测量和温度影响研究[J].岩土工程学报,2009,31(2):213-217.
  Zhang Y J, Yu Z W, Huang R, et al. Measurement of thermal conductivity and temperature effect of geotechnical materials[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(2): 213-217.(in Chinese)
[16] Boardman D I. Lime stabilisation: Clay-metal-lime interactions[D].Leicestershire, England: Loughborough University, 1999.
[17] 于明志, 曹西忠, 王善明, 等. 水分含量对土壤导热系数的影响及机理[J]. 山东建筑大学学报, 2012, 27(2): 152-154, 159. DOI:10.3969/j.issn.1673-7644.2012.02.005.
Yu M Z, Cao X Z, Wang S M, et al. Influence of water content on soil thermal conductivity and the mechanism[J]. Journal of Shandong Jianzhu University, 2012, 27(2): 152-154, 159. DOI:10.3969/j.issn.1673-7644.2012.02.005. (in Chinese)
[18] 陈莹梅. 误差与测量不确定度的教学实践[J]. 中山大学学报论丛, 2005, 25(3): 124-127.
  Chen Y M. Teaching practice of error and measurement uncertainty[J]. Sun Yatsen University Forum, 2005, 25(3): 124-127.(in Chinese)
[19] Kersten M S. Laboratory research for the determination of the thermal properties of soils[J]. Journal of Neurophysiology, 1949, 45(4): 667-697.

相似文献/References:

[1]王赞,陈云飞,贺赟晖,等.基于蒙特卡洛法的硅纳米线热导率研究[J].东南大学学报(自然科学版),2009,39(2):245.[doi:10.3969/j.issn.1001-0505.2009.02.012]
 Wang Zan,Chen Yunfei,He Yunhui,et al.Study on thermal conductivity of Si nanowire based on Monte Carlo model[J].Journal of Southeast University (Natural Science Edition),2009,39(2):245.[doi:10.3969/j.issn.1001-0505.2009.02.012]
[2]魏志勇,毕可东,陈云飞.石墨烯纳米带热导率的分子动力学模拟[J].东南大学学报(自然科学版),2010,40(2):306.[doi:10.3969/j.issn.1001-0505.2010.02.017]
 Wei Zhiyong,Bi Kedong,Chen Yunfei.Thermal conductivity of graphene nanoribbons simulated by molecular dynamics[J].Journal of Southeast University (Natural Science Edition),2010,40(2):306.[doi:10.3969/j.issn.1001-0505.2010.02.017]
[3]陈慧,魏志勇,陈伟宇,等.掺杂硅纳米薄膜法向热导率的分子动力学模拟[J].东南大学学报(自然科学版),2017,47(3):490.[doi:10.3969/j.issn.1001-0505.2017.03.013]
 Chen Hui,Wei Zhiyong,et al.Molecular dynamics simulation of out-of-plane thermal conductivity of doped silicon nanofilms[J].Journal of Southeast University (Natural Science Edition),2017,47(2):490.[doi:10.3969/j.issn.1001-0505.2017.03.013]

备注/Memo

备注/Memo:
收稿日期: 2018-08-23.
作者简介: 潘超(1994—),男,硕士生;刘松玉(联系人), 男,博士,教授,博士生导师,liusy@seu.edu.cn.
基金项目: 国家自然科学基金重点资助项目(41330641).
引用本文: 潘超,刘松玉.重金属污染土的热导率特征试验研究[J].东南大学学报(自然科学版),2019,49(2):362-368. DOI:10.3969/j.issn.1001-0505.2019.02.023.
更新日期/Last Update: 2019-03-20