孔隙率与饱和度对粉土导热特性的影响

doi:10.3969/j.jssn.1000-2006.2012.02.009

国家林草科技领军期刊
中国精品科技期刊
中国高校百佳科技期刊
江苏省新闻出版政府奖期刊奖
RCCSE林学权威期刊（A+）
CSCD核心期刊
Scopus数据库收录期刊
中文核心期刊
SCD核心期刊

作者加群：102861116

微信公众号：南京林业大学学报

高级检索

南京林业大学学报（自然科学版） ›› 2012, Vol. 36 ›› Issue (02): 42-46.doi: 10.3969/j.jssn.1000-2006.2012.02.009

孔隙率与饱和度对粉土导热特性的影响

王海波¹,杨平¹,何忠意²

1. 南京林业大学土木工程学院,江苏南京 210037,2. 广东天信电力工程检测有限公司,广东广州 510000

出版日期:2012-04-10 发布日期:2012-04-10
基金资助:
收稿日期:2011-06-23 修回日期:2011-12-14 基金项目:江苏省六大人才高峰行动计划资助项目; 江苏省科技厅苏州轨道交通专项课题(ZXJ0802) 第一作者:王海波,讲师,博士。E-mail: 550941919@qq.com。引文格式:王海波,杨平,何忠意. 孔隙率与饱和度对粉土导热特性的影响[J]. 南京林业大学学报:自然科学版,2012,36(2):42-46.

Influence of porosity and saturation on thermal properties of silty soils

WANG Haibo¹,YANG Ping¹,HE Zhongyi²

1. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; 2. Guangdong Tianxin Electric Power Engineering Testing Co., Ltd., Guangzhou 510000, China

Online:2012-04-10 Published:2012-04-10

摘要/Abstract

摘要： 为了研究孔隙率与饱和度对粉土热物理特性的影响,采用ISOMET热特性分析仪对苏州粉土、郑州粉土的重塑样及原状样热物理参数进行测试,从土体三相构成角度分析了粉土热物理参数(导热系数和体积比热容)与孔隙率及饱和度的演化关系。结果表明:当孔隙率一定时,粉土导热系数和体积比热容都随着饱和度增大而增大。粉土的饱和度存在一个临界值,当饱和度小于该临界值时,体积比热容随着孔隙率的增大而减少。孔隙率、饱和度与导热系数成非线性关系,与体积比热容成线性关系。

Abstract: In order to study the influence of porosity and saturation on thermal properties of silty soils, thermal conductivity and specific volume heat of the saturated and unsaturated silty soils from Suzhou and Zhengzhou are measured with the ISOMET apparatus. The evolution relationships between thermo-physical parameters(thermal conductivity and specific volume heat), saturation and porosity are analyzed based on three phase composition of silty soils. The results indicate the thermal conductivity and specific volume heat of silty soils with constant porosity both are increased as saturation increased. The saturation of silty soils has a critical value(S_{r_o}). When the saturation S_r is greater than S_{r_o}, the specific volume heat is decreased as porosity increased. The relationship of porosity, saturation and thermal conductivity is nonlinear and the relationship of porosity, saturation and specific volume heat is linear.

中图分类号:

TU445

王海波,杨平,何忠意. 孔隙率与饱和度对粉土导热特性的影响[J]. 南京林业大学学报（自然科学版）, 2012, 36(02): 42-46.

WANG Haibo,YANG Ping,HE Zhongyi. Influence of porosity and saturation on thermal properties of silty soils[J].Journal of Nanjing Forestry University (Natural Science Edition), 2012, 36(02): 42-46.DOI: 10.3969/j.jssn.1000-2006.2012.02.009.

参考文献

[1] 俞亚南,徐坚,冯建江.粉性土导热系数的室内实验研究[J].浙江大学学报:工学版, 2010, 44(1):180-183.
[2] 陈善雄,陈守义.砂土热导率的实验研究[J]. 岩土工程学报, 1994, 16(5):47-53.
[3] 王铁行,刘自成,卢靖.黄土导热系数和比热容的实验研究[J]. 岩土力学, 2007,28(4):655-658.
[4] 李毅,邵明安,王文焰,等.质地对土壤热性质的影响研究[J].农业工程学报, 2003, 19(4):62-65.
[5] Pourhashemi S A, Hao O J, Chawla R C. An experimental and theoretical study of the nonlinear heat conduction in dry porous media [J]. International Journal of Energy Research, 1999,23(5):389-401.
[6] Devendra N S, Konchenapalli D. Generalizen relationships for estimating soil thermal resistivity[J]. Experimental Thermal and Fluid Science, 2000,22(3):133-143.
[7] Cosenza P, Guerin R, Tabbagh A. Relationship between thermal conductivity and water content of soils using numerical modeling[J]. European Journal of Soil Science, 2003(54):581-587.
[8] 肖琳,李晓昭,赵晓豹,等. 含水量与孔隙率对土体热导率影响的室内实验研究[J]. 解放军理工大学学报:自然科学版, 2008, 9(3):241-247.
[9] Singh D N, Devid K. Generalized relationships for estimating soil thermal resistivity[J]. Exp Thermal Fluid Sci, 2000, 22(3):133-143.
[10] Naidu A D, Singh D N. A generalized procedure for determining thermal resistivity of soils[J]. International Journal of Thermal Sciences, 2004, 43:43-51.
[11] Abu-Hamdeh N H. Measurment of the thermal conductivity of sandy loam and clay loam soils using single and dual probes[J]. Agric Enging Res, 2001, 80(2):209-216.
[12] Abu-Hamdeh N H. Thermal properties of soils as affected by density and water content, biosystems[J]. Engineering, 2003, 86(1):97-102.
[13] Salomone L A, Kovacs W D, Kusudat T. Thermal performance of fine-graines soils[J].Geotech Engrg ASCE, 1984, 110(3):359-374.
[14] Johansen O. Thermal Conductivity of Soils[D]. Trondheim:Norwegian University of Science and Technology, 1975.
[15] 苏天明,刘彤,李晓昭,等.南京地区土体热物理性质测试与分析[J].岩石力学与工程学报, 2006, 25(6):1278-1283.

孔隙率与饱和度对粉土导热特性的影响

Influence of porosity and saturation on thermal properties of silty soils

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 5

编辑推荐

Metrics

本文评价

作者

读者

审稿

[1]	陈爱军,张家生,陈俊桦,明锋. 重塑黏土单向冻结过程中水分迁移试验研究[J]. 南京林业大学学报（自然科学版）, 2016, 40(05): 115-120.
[2]	鲍俊安，杨平*，张翔宇. 水泥土融沉特性的试验研究[J]. 南京林业大学学报（自然科学版）, 2013, 37(05): 97-102.
[3]	张婷,杨平. 土体单向冻结对土中水分迁移的影响[J]. 南京林业大学学报（自然科学版）, 2013, 37(01): 117-121.
[4]	袁云辉，杨平，王海波. 人工水平冻结冻土帷幕强制解冻温度场数值分析[J]. 南京林业大学学报（自然科学版）, 2011, 35(04): 117-120.
[5]	王效宾,杨平,张婷. 人工冻土融沉特性试验研究[J]. 南京林业大学学报（自然科学版）, 2008, 32(04): 108-112.