钙质砂热传导性能试验
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摘要
基于热针法测得了不同条件下南海钙质砂的热传导性能,探讨了含水率、干密度、温度、颗粒粒径等因素对钙质砂热导率的影响。研究结果表明:钙质砂热导率随含水率、干密度的增大而增大,且含水率越大,干密度对热导率的影响越明显;相对于随干密度的变化,钙质砂热导率随含水率的变化尤为显著;钙质砂热导率随温度升高而增大,但是热导率在不同温度下随含水率的增长趋势不同;颗粒粒径对钙质砂热导率的影响甚微;在钙质砂中掺入一定量石英砂有助于改善其导热性能。
The thermal conductivity of calcareous sand in the South China Sea is measured under different conditions by the thermal probe method, and the effects of water content, dry density, temperature, particle size and other factors on the thermal conductivity of calcareous sand are discussed. The results show that the thermal conductivity of calcareous sand increases with the increase of the water content and dry density, and the higher the water content, the more significant the influences of dry density on thermal conductivity. The thermal conductivity of calcareous sand increases with the increase of the temperature, but the thermal conductivity of calcareous sand varies with the increasing trend of water content at different temperatures. The particle size has little effect on the thermal conductivity of calcareous sand. Adding a certain amount of quartz sand into the calcareous sand helps to improve its thermal conductivity.
The thermal conductivity of calcareous sand in the South China Sea is measured under different conditions by the thermal probe method, and the effects of water content, dry density, temperature, particle size and other factors on the thermal conductivity of calcareous sand are discussed. The results show that the thermal conductivity of calcareous sand increases with the increase of the water content and dry density, and the higher the water content, the more significant the influences of dry density on thermal conductivity. The thermal conductivity of calcareous sand increases with the increase of the temperature, but the thermal conductivity of calcareous sand varies with the increasing trend of water content at different temperatures. The particle size has little effect on the thermal conductivity of calcareous sand. Adding a certain amount of quartz sand into the calcareous sand helps to improve its thermal conductivity.
引文
[1]刘崇权,杨志强,汪稔.钙质土力学性质研究现状与发展[J].岩土力学,1995,16(4):74-83.(LIU Chong-quan,YANG Zhi-qiang,WANG Ren.Research status and development of mechanical properties of calcareous soil[J].Rock and Soil Mechanics,1995,16(4):74-83.(in Chinese))
[2]SPLADING M D,RAVILIOUS C,GREEN E P.World atlas of coral reefs[M].Berkeley:University of California Press,2001.
[3]虞海珍,汪稔.钙质砂动强度试验研究[J].岩土力学,1999,20(4):6-11.(YU Hai-zhen,WANG Ren.Experimental study on dynamic strength of calcareous sand[J].Rock and Soil Mechanics,1999,20(4):6-11.(in Chinese))
[4]张家铭,张凌,刘慧,等.钙质砂剪切特性试验研究[J].岩石力学与工程学报,2008,27:3010-3015.(ZHANG Jia-ming,ZHANG Lin,LIU Hui,et al.Experimental study on shear properties of calcareous sand[J].Journal of Rock Mechanics and Engineering,2008,27:3010-3015.(in Chinese))
[5]王帅,雷学文,孟庆山,等.侧限条件下高压对钙质砂颗粒破碎影响研究[J].建筑科学,2017,33(5):80-87.(WANG Shuai,LEI Xue-wen,MENG Qing-shan,et al.Effect of high pressure on calcareous sand particle breakage under lateral conditions[J].Architectural science,2017,33(5):80-87.(in Chinese))
[6]KING S Y,HALFTER N A.Underground power cables[M].London:Longman,1982.
[7]SLEGEL D L,DAVIS L R.Transient heat and mass transfer in soils in the vicinity of heated porous pipes[J].J Heat Transfer1977,99(4):541-546.
[8]TANG A M,CUI Y J,LE T T.A study on the thermal conductivity of compacted bentonites[J].Applied Clay Science,2008,41(3):181-189.
[9]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.(WANG Tie-xing,LIU Zi-cheng,LU Jing.Experimental study on coefficient of thermal conductivity and specific volume heat of loess[J].Rock and Soil Mechanics,2007,28(4):655-658.(in Chinese))
[10]曾召田,范理云,莫红艳,等.土壤热导率的影响因素实验研究[J].太阳能学报,2018,39(2):377-383.(ZENGZhao-tian,FAN Li-yun,MO Hong-yan,et al.Experimental study on factors affecting soil thermal conductivity[J].ACTAEnergiae Solaris Sinica,2018,39(2):377-383.(in Chinese))
[11]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):261-265.(ZHUANGYing-chun,XIE Kang-he,SUN You-hong.Experimental study on thermal conductivity of sand and soil mixtures[J].Rock and Soil Mechanics,2005,26(2):261-265.(in Chinese))
[12]徐云山,曾召田,吕海波,等.高温下红黏土热导率的变化规律试验研究[J].工程地质学报,2017,25(6):1465-1473.(XU Yun-shan,ZENG Zhao-tian,LüHai-bo,et al.Experimental study on the variation of thermal conductivity of red clay at high temperature[J].Journal of Engineering Geology,2017,25(6):1465-1473.(in Chinese))
[13]周媛媛,江海峰,李辉,等.含水砂土导热系数实验研究[J].工程热物理学报,2015,36(2):265-268.(ZHOUYuan-yuan,JIANG Hai-feng,LI Hui,et al.Experimental study of the thermal conductivity of sand with different moisture content[J].Journal of engineering Thermophysics,2015,36(2):265-268.(in Chinese))
[14]邵明安,王全九,黄明斌.土壤物理学[M].北京:高等教育出版社,2006.(SHAO Ming-an,WANG Quan-jiu,HUANG Ming-bin.Soil physics[M].Beijing:Higher Education Press,2006.(in Chinese))
[2]SPLADING M D,RAVILIOUS C,GREEN E P.World atlas of coral reefs[M].Berkeley:University of California Press,2001.
[3]虞海珍,汪稔.钙质砂动强度试验研究[J].岩土力学,1999,20(4):6-11.(YU Hai-zhen,WANG Ren.Experimental study on dynamic strength of calcareous sand[J].Rock and Soil Mechanics,1999,20(4):6-11.(in Chinese))
[4]张家铭,张凌,刘慧,等.钙质砂剪切特性试验研究[J].岩石力学与工程学报,2008,27:3010-3015.(ZHANG Jia-ming,ZHANG Lin,LIU Hui,et al.Experimental study on shear properties of calcareous sand[J].Journal of Rock Mechanics and Engineering,2008,27:3010-3015.(in Chinese))
[5]王帅,雷学文,孟庆山,等.侧限条件下高压对钙质砂颗粒破碎影响研究[J].建筑科学,2017,33(5):80-87.(WANG Shuai,LEI Xue-wen,MENG Qing-shan,et al.Effect of high pressure on calcareous sand particle breakage under lateral conditions[J].Architectural science,2017,33(5):80-87.(in Chinese))
[6]KING S Y,HALFTER N A.Underground power cables[M].London:Longman,1982.
[7]SLEGEL D L,DAVIS L R.Transient heat and mass transfer in soils in the vicinity of heated porous pipes[J].J Heat Transfer1977,99(4):541-546.
[8]TANG A M,CUI Y J,LE T T.A study on the thermal conductivity of compacted bentonites[J].Applied Clay Science,2008,41(3):181-189.
[9]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.(WANG Tie-xing,LIU Zi-cheng,LU Jing.Experimental study on coefficient of thermal conductivity and specific volume heat of loess[J].Rock and Soil Mechanics,2007,28(4):655-658.(in Chinese))
[10]曾召田,范理云,莫红艳,等.土壤热导率的影响因素实验研究[J].太阳能学报,2018,39(2):377-383.(ZENGZhao-tian,FAN Li-yun,MO Hong-yan,et al.Experimental study on factors affecting soil thermal conductivity[J].ACTAEnergiae Solaris Sinica,2018,39(2):377-383.(in Chinese))
[11]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):261-265.(ZHUANGYing-chun,XIE Kang-he,SUN You-hong.Experimental study on thermal conductivity of sand and soil mixtures[J].Rock and Soil Mechanics,2005,26(2):261-265.(in Chinese))
[12]徐云山,曾召田,吕海波,等.高温下红黏土热导率的变化规律试验研究[J].工程地质学报,2017,25(6):1465-1473.(XU Yun-shan,ZENG Zhao-tian,LüHai-bo,et al.Experimental study on the variation of thermal conductivity of red clay at high temperature[J].Journal of Engineering Geology,2017,25(6):1465-1473.(in Chinese))
[13]周媛媛,江海峰,李辉,等.含水砂土导热系数实验研究[J].工程热物理学报,2015,36(2):265-268.(ZHOUYuan-yuan,JIANG Hai-feng,LI Hui,et al.Experimental study of the thermal conductivity of sand with different moisture content[J].Journal of engineering Thermophysics,2015,36(2):265-268.(in Chinese))
[14]邵明安,王全九,黄明斌.土壤物理学[M].北京:高等教育出版社,2006.(SHAO Ming-an,WANG Quan-jiu,HUANG Ming-bin.Soil physics[M].Beijing:Higher Education Press,2006.(in Chinese))