Effective Thermal Conductivity Measurement for Multilayered Soil Using DTS Technology

海那尔·别克吐尔逊; 施斌; 曹鼎峰; 魏广庆

doi:10.13409/j.cnki.jdpme.2018.02.011

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Effective Thermal Conductivity Measurement for Multilayered Soil Using DTS Technology

更新时间：2025-12-11

- Effective Thermal Conductivity Measurement for Multilayered Soil Using DTS Technology
- Vol. 38, Issue 2, Pages: 282-288(2018)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2018.02.011
  CLC： K52;TU83
- Published：2018
- 稿件说明：
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[1]海那尔·别克吐尔逊,施斌,曹鼎峰,魏广庆.基于DTS技术的多层土有效导热系数测量方法[J].防灾减灾工程学报,2018,38(02):282-288.

海那尔·别克吐尔逊, 施斌, 曹鼎峰, et al. Effective Thermal Conductivity Measurement for Multilayered Soil Using DTS Technology[J]. 2018, 38(2): 282-288.
[1]海那尔·别克吐尔逊,施斌,曹鼎峰,魏广庆.基于DTS技术的多层土有效导热系数测量方法[J].防灾减灾工程学报,2018,38(02):282-288. DOI： 10.13409/j.cnki.jdpme.2018.02.011.

海那尔·别克吐尔逊, 施斌, 曹鼎峰, et al. Effective Thermal Conductivity Measurement for Multilayered Soil Using DTS Technology[J]. 2018, 38(2): 282-288. DOI： 10.13409/j.cnki.jdpme.2018.02.011.

摘要

岩土体的导热系数是开发和利用地热能的重要参数。通过室内热响应模型试验

采用分布式温度传感技术（Distributed Temperature Sensing

DTS）

连续测得多层土模型饱和状态下4种常见土在试验中的有效导热系数分布和大小

分析了渗流对土有效导热系数的影响

并利用GeoStudio有限元软件对不同类型土的有效导热系数进行了模拟计算。试验和数值计算结果均表明:4种饱和土中有渗流的砂土的有效导热系数最大

无渗流砂土次之

粉土小于无渗流砂土

粘土小于粉土

有机质土的最小;渗流对砂土有效导热系数的结果影响显著

使有效导热系数增大了6倍。本试验采用DTS测试土的有效导热系数的方法可用于现场试验

所得结论为地热能开发和地源热泵设计提供了重要依据。

Abstract

The effective soil thermal conductivity of rock and soil is an important parameter in the development and utilization of geothermal energy.Based on laboratory thermal response model tests

the effective thermal conductivity of four common saturated soils were measured using Distributed Temperature Sensing（DTS）.The influence of seepage and soil types on effective thermal conductivity of soil was simulated by the finite element software GeoStudio.The experimental and numerical results show that the effective thermal conductivity of these four saturated soils is as follows:λ

sand（with seepage）

>λ

sand（without seepage）

>λ

silt

>λ

clay

>λ

organic

matter soil.The seepage has a large impact on effective thermal conductivity of soil.The effective thermal conductivity of soil increases up to 6 times under the impact of seepage.The method used in this paper can be used in field research as well.The conclusions provide basic knowledge for geothermal energy exploitation and ground source heat pump design.

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references

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