Please wait a minute...
J4  2010, Vol. 44 Issue (1): 180-183    DOI: 10.3785/j.issn.1008-973X.2010.01.032
土木与建筑工程     
粉性土导热系数的室内实验研究
俞亚南1,徐坚1,冯建江2
(1.浙江大学 土木工程学系,浙江 杭州 310058; 2.浙江省水利水电专科学校 水利工程学系,浙江 杭州 310018)
Laboratory experimenton thermal conductivity of silty clay
YU Ya-nan1, XU Jian1, FENG Jian-jiang2
(1. Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China;
2. Department of Hydraulic Engineering, Zhejiang Water Conservancy and Hydropower College, Hangzhou 310018, China)
 全文: PDF  HTML
摘要:

介绍了一种在一维稳态导热状态下测量土壤导热系数的新方法——稳态平板法.该方法试样制备简便、干扰因素少、测试数据可信、成本低廉,便于工程测试应用.利用该方法测定2种典型土壤在不同干密度、水的质量分数条件下的导热系数.实验结果表明,土壤的导热系数随着水的质量分数和干密度的增加均有不同程度的提高;采用新方法得到的导热系数变化规律与采用探针法测量的结果较为一致.根据实验数据拟合得出土壤导热系数与土中水质量分数、干密度的经验公式,可供工程设计参考.

Abstract:

A new estimation method of soil thermal conductivity, slab method, was presented, which measures the soil thermal conductivityin one-dimensional steady heat conduction process. Compared with the conventional methods, the new method has many advantages, such as convenient specimen preparation, less interference factors, higher measuring accuracy and lower cost. Using this method, thethermal conductivities of two typical soils with different water ratio and dry density were tested. The soil thermal conductivity increases with the increasing dry density and water ratio. The variation curves of the soil thermal conductivity obtained in the experiment is well consistent with those of thethermal probe method. An empirical equation of the soil thermal conductivity and water ratio was derived by curve fitting based on the experimental results, and it is convenient for engineering application.

出版日期: 2010-02-26
:  TU 111  
基金资助:

浙江省教育厅科研资助项目(20070793).

作者简介: 俞亚南(1958-),男,浙江奉化人,教授,博导,主要从事市政、水利、交通等领域的研究.
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  

引用本文:

俞亚南, 徐坚, 冯建江. 粉性土导热系数的室内实验研究[J]. J4, 2010, 44(1): 180-183.

SHU E-Na, XU Jian, FENG Jian-Jiang. Laboratory experimenton thermal conductivity of silty clay. J4, 2010, 44(1): 180-183.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.01.032        http://www.zjujournals.com/eng/CN/Y2010/V44/I1/180

[1] 汪集暘,马伟斌,龚宇列,等. 地热利用技术[M].北京:化学工业出版社, 2004: 73-77.
[2] 刁乃仁,方肇洪.地埋管地源热泵技术[M].北京:高等教育出版社, 2006: 81-93.
[3] OCHSNER T E, ROBERT H, TUSHENG R. A new perspective on soil thermal properties [J]. Soil Science Society of America, 2001, 65(6): 1641-1647.
[4] 庄迎春,谢康和,孙友宏. 砂土混合材料导热性能的试验研究[J]. 岩土力学, 2005, 26(2): 261-264.
ZHUANG Ying-chun, XIE Kang-he, SUN You-hong. Experimental study on thermal conductivity of mixed materials of sand and bentonite [J]. Rock and Soil Mechanics, 2005, 26(2): 261-264.
[5] 张奕.传热学[M].南京:东南大学出版社, 2004: 5-10.
[6] VERMA L S, SHROTRIYA A K, SINGH R. Prediction and measurement of effective thermal conductivity of three-phase systems [J]. Journal of Physics D: Applied Physics, 1991, 24(9): 515-526.

[1] 王子阳, 邵卫云, 张仪萍. 考虑土壤分层的地源热泵圆柱面热源模型[J]. J4, 2013, 47(8): 1338-1345.
[2] 王子阳, 张仪萍, 战国会, 俞亚南. 有渗流时埋管换热器传热模型[J]. J4, 2012, 46(8): 1450-1456.
[3] 战国会, 张仪萍, 徐坚, 俞亚南. 地源热泵群孔长期换热有限长体热源模型[J]. J4, 2011, 45(8): 1411-1415.
[4] 战国会, 俞亚南. 地源热泵有限长圆柱面和圆柱体热源模型[J]. J4, 2011, 45(6): 1104-1107.