Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions
Traditional embankment is widely used in the permafrost regions along the Qinghai-Tibet Railway (QTR) because of its simple construction and lower cost. However, this form of embankment has insufficient ability to resist external thermal disturbance. To clarify the thermal characteristics of traditi...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/7185616 |
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| author | Qihang Mei Ji Chen Shouhong Zhang Xin Hou Jingyi Zhao Jinchang Wang Haiming Dang Guojun Liu Guilong Wu |
| author_facet | Qihang Mei Ji Chen Shouhong Zhang Xin Hou Jingyi Zhao Jinchang Wang Haiming Dang Guojun Liu Guilong Wu |
| author_sort | Qihang Mei |
| collection | DOAJ |
| description | Traditional embankment is widely used in the permafrost regions along the Qinghai-Tibet Railway (QTR) because of its simple construction and lower cost. However, this form of embankment has insufficient ability to resist external thermal disturbance. To clarify the thermal characteristics of traditional embankment under climate warming, the ground temperature change process of section K1068 + 750 of the QTR was analysed in this study. Based on the field monitoring data from 2006 to 2019 and the established heat transfer model, the past and future changes of permafrost thermal regime under the embankment were analysed. The results show that the degradation of permafrost under the embankment is faster than that under the undisturbed site due to the combined of embankment construction and climate warming. The sunny-shady slope effect related to embankment orientation makes the distribution of permafrost temperature under embankment asymmetric. In the long term, permafrost degrades both under the undisturbed site and embankment. The continuous degradation of permafrost causes the settlement and deformation of embankment, especially the asymmetric degradation of permafrost on sunny side and shady side will cause longitudinal cracks on the embankment. Therefore, timely application of strengthening measures which can slow down the degradation of permafrost and adjust the uneven ground temperature on the sunny and shady sides under the embankment is of great significance to the safety of the traditional embankment. |
| format | Article |
| id | doaj-art-130cb0e76d354ac1858d890041ffbbf2 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
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| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-130cb0e76d354ac1858d890041ffbbf22025-02-03T07:23:58ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/71856167185616Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost RegionsQihang Mei0Ji Chen1Shouhong Zhang2Xin Hou3Jingyi Zhao4Jinchang Wang5Haiming Dang6Guojun Liu7Guilong Wu8Beiluhe Observation and Research Station of Frozen Soil Engineering and Environment, State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environmental and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaBeiluhe Observation and Research Station of Frozen Soil Engineering and Environment, State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environmental and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaChina Railway Qinghai-Tibet Group Co. Ltd., Xining 810007, ChinaBeiluhe Observation and Research Station of Frozen Soil Engineering and Environment, State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environmental and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaBeiluhe Observation and Research Station of Frozen Soil Engineering and Environment, State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environmental and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaChina Railway Qinghai-Tibet Group Co. Ltd., Xining 810007, ChinaChina Railway Qinghai-Tibet Group Co. Ltd., Xining 810007, ChinaBeiluhe Observation and Research Station of Frozen Soil Engineering and Environment, State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environmental and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaBeiluhe Observation and Research Station of Frozen Soil Engineering and Environment, State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environmental and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaTraditional embankment is widely used in the permafrost regions along the Qinghai-Tibet Railway (QTR) because of its simple construction and lower cost. However, this form of embankment has insufficient ability to resist external thermal disturbance. To clarify the thermal characteristics of traditional embankment under climate warming, the ground temperature change process of section K1068 + 750 of the QTR was analysed in this study. Based on the field monitoring data from 2006 to 2019 and the established heat transfer model, the past and future changes of permafrost thermal regime under the embankment were analysed. The results show that the degradation of permafrost under the embankment is faster than that under the undisturbed site due to the combined of embankment construction and climate warming. The sunny-shady slope effect related to embankment orientation makes the distribution of permafrost temperature under embankment asymmetric. In the long term, permafrost degrades both under the undisturbed site and embankment. The continuous degradation of permafrost causes the settlement and deformation of embankment, especially the asymmetric degradation of permafrost on sunny side and shady side will cause longitudinal cracks on the embankment. Therefore, timely application of strengthening measures which can slow down the degradation of permafrost and adjust the uneven ground temperature on the sunny and shady sides under the embankment is of great significance to the safety of the traditional embankment.http://dx.doi.org/10.1155/2021/7185616 |
| spellingShingle | Qihang Mei Ji Chen Shouhong Zhang Xin Hou Jingyi Zhao Jinchang Wang Haiming Dang Guojun Liu Guilong Wu Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions Advances in Materials Science and Engineering |
| title | Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions |
| title_full | Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions |
| title_fullStr | Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions |
| title_full_unstemmed | Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions |
| title_short | Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions |
| title_sort | experimental and numerical analyses of the thermal regime of a traditional embankment in permafrost regions |
| url | http://dx.doi.org/10.1155/2021/7185616 |
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