Specific heat of frozen soil considering sensible and latent heat of pore water

XIA Jin-hong; LI Shun-qun; XIA Yuan-you; WANG Xing-xing

doi:10.16285/j.rsm.2017.04.007

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Specific heat of frozen soil considering sensible and latent heat of pore water

更新时间：2026-06-25

- Specific heat of frozen soil considering sensible and latent heat of pore water
- Vol. 38, Issue 4, Pages: 973-978(2017)
- 作者机构：
  
  1. 武汉理工大学土木工程与建筑学院
  2. 天津城建大学土木工程学院
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.04.007
  CLC： TU445
- Published：2017
- 稿件说明：
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[1]夏锦红,李顺群,夏元友,王杏杏.一种考虑显热和潜热双重效应的冻土比热计算方法[J].岩土力学,2017,38(04):973-978.

XIA Jin-hong, LI Shun-qun, XIA Yuan-you, et al. Specific heat of frozen soil considering sensible and latent heat of pore water[J]. 2017, 38(4): 973-978.
[1]夏锦红,李顺群,夏元友,王杏杏.一种考虑显热和潜热双重效应的冻土比热计算方法[J].岩土力学,2017,38(04):973-978. DOI： 10.16285/j.rsm.2017.04.007.

XIA Jin-hong, LI Shun-qun, XIA Yuan-you, et al. Specific heat of frozen soil considering sensible and latent heat of pore water[J]. 2017, 38(4): 973-978. DOI： 10.16285/j.rsm.2017.04.007.

摘要

对土在冻结过程中孔隙水的相态演变过程进行了分析

并在研究显热、潜热物理本质的基础上

将冻土进一步划分为冻结土和冻实土。根据潜热的物理意义指出

随土温从一般地温逐渐降低至较大负温

土的比热应该分段计算

即分为融土阶段、冻结阶段和冻实阶段。在融土阶段

孔隙水始终为液态;在冻结阶段

存在可以进一步冻结为冰的液态水;在冻实阶段

不再存在进一步可能冻结为冰的液态水。因此

冻结土的进一步降温将同时伴有显热释放和潜热释放。而在冻实土中

进一步的降温只伴有显热释放。在此基础上

基于混合物比热容的加权叠加法则

研究了冻土的比热构成

给出了涵盖潜热的冻土比热计算方法。

Abstract

The phase change evolution of pore water was analyzed in the freezing process.Based

on the mechanism of sensible heat and latent heat

the frozen soil was divided into freezing soil and stable frozen soil.According to the physical meaning of latent heat

the specific heat of soil should be stepwisely calculated

namely melting stage

freezing state and frozen state as the temperature gradually drops from a general temperature to a larger negative temperature.In the melting stage

the pore water is always in the liquid phase.In the freezing stage

existing liquid water can be frozen into ice.In the frozen state

there exists no liquid water can be frozen into ice.Thus

the cooling of freezing soil would be accompanied by releasing of sensible heat and latent heat.In frozen soil

the further cooling was accompanied by releasing of sensible heat.Then

based on the weighted superposition of specific heat capacity of mixture

the specific heat of the frozen soil is investigated.A method is developed for calculating the specific heat capacity of frozen soil with consideration of latent heat.

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