人工热源在寒区路基中的热扩散特性及热影响范围研究

doi:10.13722/j.cnki.jrme.2022.0562

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摘要针对寒区铁路路基冻胀病害，提出一种基于地源热泵的供热系统及分布式方案，设计I级单线铁路的足尺半幅路基试验平台，对路基温度场进行监测与分析。定义供热系统的有效热影响半径为在一定时间内将路基冻结深度控制在有害临界值以内的纵向范围，并提出有效热影响半径的预测方法。结果表明：热泵系统的供热温度可达30 ℃以上，制热系数(COP)可达6.9，在寒冷气候下具有稳定的地温能转化性能与节能性。有效供热量和COP随着时间的延长而逐渐减小。土体升温幅度随着与热源距离的增大而降低，且路基竖向升温速率大于纵向。人工供热对寒潮天气影响具有显著的抑制作用，试验结束时供热系统两侧2.0和3.0 m范围的冻结深度控制分别在30和35 cm以内。有效热影响半径与供热时间和有害冻结深度均呈正比关系。当有害冻结深度为30，35，40 cm，供热5 d时的有效热影响半径分别为0.44，0.64，0.83 m；若热影响半径需达到1.5 m，所需供热时间分别为53，41，35 d。实际应用时应根据路基有害冻结深度和冻胀处置时间要求，合理设计供热系统沿线路的纵向布设间距，以保证供相邻供热系统的解冻范围在规定时间内交汇。

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	胡田飞1
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	王力3
	岳祖润1
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	徐丽霞3
	刘济华3

关键词 ：路基工程, 路基冻胀, 地源热泵, 供热温度, 温度场, 冻结深度, 有效热影响半径

Abstract：In order to address the frost heave problem of railway embankment in cold regions，an artificial heating system and a distributed heating scheme based on ground source heat pump technology was proposed. A full scale half-width embankment test platform of class I single-track railway was built，and the temperature field of embankment was monitored. The effective heating influence radius of the heating system was defined as the longitudinal range within which the embankment freezing depth is controlled below the harmful threshold within a certain time，and a prediction method of the effective heating influence radius was put forward. The test results show that the heating temperature of the heat pump system can reach above 30 ℃，the coefficient of performance(COP) can be as high as 6.9，and both the effective heating capacity and COP gradually decrease with time. The temperature rise amplitude of soil decreases with the distance from heat source，and the temperature increment rate in the vertical direction around the heating pipe is greater than that in the longitudinal direction along embankment. Artificial heating has a significant inhibitory effect on the impact of cold wave weather. At the end of the test，the freezing depth within 2.0 and 3.0 m on both sides of the heating system is controlled within 30 and 35 cm respectively. The heating influence radius is proportional to both heating time and the harmful freezing depth threshold. When the harmful freezing depth threshold is 30，35，40 cm，the effective heating influence radius is 0.44 m，0.64 m，0.83 m respectively when heating for 5 days；and if the heating influence radius needs to reach 1.5 m，the heating time should be 53，41，35 d respectively. In application，the longitudinal layout spacing of heating systems along the embankment should be reasonably designed according to the harmful freezing depth threshold and the required treatment time after the appearance of frost heave，so as to ensure the merge of thawing range of adjacent heating systems within the specified time.

Key words： subgrade engineering embankment frost heave ground source heat pump heating temperature temperature field freezing depth effective heating influence radius

引用本文:

胡田飞1，2，王力3，岳祖润1，2，徐丽霞3，刘济华3. 人工热源在寒区路基中的热扩散特性及热影响范围研究[J]. 岩石力学与工程学报, 2023, 42(S1): 3687-3699.
HU Tianfei1，2，WANG Li3，YUE Zurun1，2，XU Lixia3，LIU Jihua3. Study on thermal diffusion characteristics and influence range of an artificial heat source inside embankment in cold regions. , 2023, 42(S1): 3687-3699.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2022.0562 或 http://rockmech.whrsm.ac.cn/CN/Y2023/V42/IS1/3687

[14]	MA Z D，JIA G S，CUI X，et al. Analysis on variations of ground temperature field and thermal radius caused by ground heat exchanger crossing an aquifer layer[J]. Applied Energy，2020，276：115453.
[24]	陈东，谢继红. 热泵技术手册[M]. 北京：化学工业出版社，2012：433-436.(CHEN Dong，XIE Jihong. Heat pump technical manual[M]. Beijing：Chemical Industry Press Co.，Ltd.，2012：433-436.(in Chinese))
[2]	ZHANG C，TAN Y Q，CHEN F C，et al. Long-term thermal analysis of an airfield-runway snow-melting system utilizing heat-pipe technology[J]. Energy Conversion and Management，2019，186：473-486.
[4]	XIONG Z Y，LI X Z，ZHAO P，et al. An in-situ experimental investigate of thermo-mechanical behavior of a large diameter over length energy pile[J]. Energy and Buildings，2021，252：111474.
[5]	胡田飞. 基于可再生能源供热技术的冻土区路基防冻胀方法研究[J]. 太阳能，2021，(6)：37-49.(HU Tianfei. Study on frost heaving prevention method for subgrade in frost soil regions based on renewable energy heating technology[J]. Solar Energy，2021，(6)：37-49.(in Chinese))
[7]	胡田飞. 制冷与集热技术在寒区路基工程中的应用研究[博士学位论文][D]. 北京：北京交通大学，2018.(HU Tianfei. Application of refrigeration and heat-collect technology to subgrade engineering in cold regions[Ph. D. Thesis][D]. Beijing：Beijng Jiaotong University，2018.(in Chinese))
[9]	HEDAYATI-DEZFOOLI M，LEONG W H. An experimental study of coupled heat and moisture transfer in soils at high temperature conditions for a medium coarse soil[J]. International Journal of Heat and Mass Transfer，2019，137：372-389.
[10]	王欣，杜震宇，吕植东. 寒冷地区垂直埋管换热器供暖期岩土体温度场研究[J]. 太原理工大学学报， 2016，47(1)：41-45.(WANG Xin，DU Zhenyu，LV Zhidong. Experimental research on soil temperature field of vertically buried heat exchanger in heating period in cold region[J]. Journal of Taiyuan University of Technology，2016，47(1)：41-45.(in Chinese))
[12]	张东海. 分层和渗流条件下竖直地埋管换热器传热特性研究[博士学位论文][D]. 徐州：中国矿业大学，2020.(ZHANG Donghai. Investigation on heat transfer behavior of vertical ground heat exchangers in a layered subsurface in the presence of groundwater advection[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2020.(in Chinese))
[15]	EPPELBAUM L V，KUTASOV I M. Determination of the formation temperature from shut-in logs：Estimation of the radius of thermal influence[J]. Journal of Applied Geophysics，2011，73(3)：278-282.
[17]	汪双杰，陈建兵，金龙，等. 冻土路基热收支状态的尺度效应[J]. 中国公路学报，2015，28(12)：9-16.(WANG Shuangjie，CHEN Jianbing，JIN Long，et al. Scale effect of thermal budget of permafrost embankment[J]. China Journal of Highway and Transport，2015，28(12)：9-16.(in Chinese))
[19]	胡田飞，徐丽霞，张宗凯. 基于地热能的寒区路基主动供热防冻胀方法研究[J]. 区域供热，2021，(6)：60-71.(HU Tianfei，XU Lixia，ZHANG Zongkai. Study on a novel anti-frost method for subgrade in cold regions based on geothermal energy utilization[J]. District Heating，2021，(6)：60-71.(in Chinese))
[20]	胡田飞，岳祖润，闫晓夏，等. 季节性冻土区路基专用地源热泵供热装置研究[J]. 中国铁道科学，2021，42(6)：39-49.(HU Tianfei，YUE Zurun，YAN Xiaoxia，et al. Study on heating device for subgrade in seasonally frozen soil regions based on ground-source heat pump[J]. China Railway Science，2021，42(6)：39-49.(in Chinese))
[22]	韩雷雷. 季节冻土区冷阻层路基结构稳定性及应用研究[博士学位论文][D]. 长春：吉林大学，2021.(HAN Leilei. Study on structural stability and application of cold resistant layer subgrade in seasonal frozen region[Ph. D. Thesis][D]. Changchun：Jilin University，2021.(in Chinese))
[1]	张明礼，张瑞玲，冯德刚，等. 寒区工程锅盖效应病害调查与防治研究进展[J]. 科学技术与工程，2021，21(19)：7 863-7 873.(ZHANG Mingli，ZHANG Ruiling，FENG Degang，et al. Engineering diseases investigation and research progress on prevention of the pot-cover effect in cold regions[J]. Science Technology and Engineering，2021，21(19)：7 863-7 873.(in Chinese))
[11]	王洋，孙婉，高世轩，等. 竖直地埋管换热器吸排热量比对换热区温度场影响研究[J]. 可再生能源，2016，34(9)：1 383-1 391. (WANG Yang，SUN Wan，GAO Shixuan，et al. Influence of the ratio of heat absorption and discharge of vertical ground heat exchanger on temperature field of the heat exchange zone[J]. Renewable Energy Resources，2016，34(9)：1 383-1 391.(in Chinese))
[21]	何建胜，傅鸿，刘凯辉. 石太客专线冻害预防与整治[C]// 世界轨道交通发展研究会年会论文集. [S. l.]：[s. n.]，2013：219-224.(HE Jiansheng，FU Hong，LIU Kaihui. Shitai passenger dedicated line prevention and remediation of frost damage[C]// Proceedings of the World Rail Transit Development Research Annual Conference. [S. l.]：[s. n.]，2013：219-224.(in Chinese))
[3]	ZHANG G Z，XIA C C，SUN M，et al. A new model and analytical solution for the heat conduction of tunnel lining ground heat exchangers[J]. Cold Regions Science and Technology，2013，88：59-66.
[13]	李庆文，郑明阳，乔兰，等. 能源桩三维螺旋线热源的瞬态传热模型[J]. 工程科学学报，2021，43(11)：1 569-1 576.(LI Qingwen，ZHENG Mingyang，QIAO Lan，et al. Transient heat transfer model of a three-dimensional spiral heat source in an energy pile[J]. Chinese Journal of Engineering，2021，43(11)：1 569-1 576.(in Chinese))
[23]	HU T F，LIU J K，YUE Z R，et al. Proposed application of a geothermal heat pump technique to address frost damage of embankments in cold regions[J]. Cold Regions Science and Technology，2022，(195)：103474.
[8]	ZHANG T，CAI G，LIU S，et al. Investigation on thermal characteristics and prediction models of soils[J]. International Journal of Heat and Mass Transfer，2017，106：1 074-1 086.
[18]	江辉煌，吴龙梁，高明显，等. 振动荷载下路基的能量耗散率空间分布规律的研究[J]. 振动与冲击，2021，40(2)：185-193.(JIANG Huihuang，WU Longliang，GAO Mingxian，et al. Spatial distribution of the energy dissipation rate in a subgrade under vibration load[J]. Journal of Vibration and Shock，2021，40(2)：185-193.(in Chinese))
[6]	胡田飞，刘建坤，岳祖润，等. 季节性冻土区路基专用太阳能主动供热装置研究[J]. 中国铁道科学，2021，42(2)：39-49.(HU Tianfei，LIU Jiankun，YUE Zurun，et al. Study on solar active heating device for subgrade in seasonally frozen soil region[J]. China Railway Science，2021，42(2)：39-49.(in Chinese))
[16]	王哲，刘耶军，张正威，等. 能源桩全生命周期热响应半径简化计算方法[J]. 中南大学学报：自然科学版，2020，51(2)：514-522. (WANG Zhe，LIU Yejun，ZHANG Zhengwei，et al. Simplified calculation method of thermal response radius of energy pile in its whole life cycle[J]. Journal of Central South University：Science and Technology，2020，51(2)：514-522.(in Chinese))