Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade
In the alpine mountain area, the stability of the steep-slope permafrost subgrade is mainly affected by the temperature variation in the frozen soil layer at the base of the road. Under the conditions of climate warming and engineering-related disturbance, the cooling of the subgrade is an urgent pr...
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2023
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ftdoajarticles:oai:doaj.org/article:11e6e28c03a1485abce2c0ad687ffc84 2023-05-15T17:57:10+02:00 Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade Zhe Cheng Zhilong Zhang Guang Liu Ying Wu 2023-01-01T00:00:00Z https://doi.org/10.3390/su15021180 https://doaj.org/article/11e6e28c03a1485abce2c0ad687ffc84 EN eng MDPI AG https://www.mdpi.com/2071-1050/15/2/1180 https://doaj.org/toc/2071-1050 doi:10.3390/su15021180 2071-1050 https://doaj.org/article/11e6e28c03a1485abce2c0ad687ffc84 Sustainability, Vol 15, Iss 1180, p 1180 (2023) steep-slope permafrost half-cut and half-fill subgrade non-linear vent pipe gravel layer cooling effect Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.3390/su15021180 2023-01-22T01:26:08Z In the alpine mountain area, the stability of the steep-slope permafrost subgrade is mainly affected by the temperature variation in the frozen soil layer at the base of the road. Under the conditions of climate warming and engineering-related disturbance, the cooling of the subgrade is an urgent problem to be solved in the field of construction. In this paper, the numerical calculation method, combined with data monitored in situ, is used to study the cooling effects of several subgrade cooling measures, in which the non-linear ventilation pipe and rubble layer are combined. The results show the following: (1) the temperature field of the steep-slope subgrade is clearly different in lateral terms—after 20 years of operation, the maximum difference in the melting depth between the left shoulder and the subgrade center is 3 m; (2) the maximum melting depth of the gravel subgrade center is 3.85 m, while the maximum difference in the melting depth between the left shoulder and the subgrade center is 2.3 m; (3) the cooling effect of the composite measures is noteworthy, and a −2.2 °C freezing area appears under the subgrade. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Sustainability 15 2 1180 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
steep-slope permafrost half-cut and half-fill subgrade non-linear vent pipe gravel layer cooling effect Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
steep-slope permafrost half-cut and half-fill subgrade non-linear vent pipe gravel layer cooling effect Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Zhe Cheng Zhilong Zhang Guang Liu Ying Wu Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade |
topic_facet |
steep-slope permafrost half-cut and half-fill subgrade non-linear vent pipe gravel layer cooling effect Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
description |
In the alpine mountain area, the stability of the steep-slope permafrost subgrade is mainly affected by the temperature variation in the frozen soil layer at the base of the road. Under the conditions of climate warming and engineering-related disturbance, the cooling of the subgrade is an urgent problem to be solved in the field of construction. In this paper, the numerical calculation method, combined with data monitored in situ, is used to study the cooling effects of several subgrade cooling measures, in which the non-linear ventilation pipe and rubble layer are combined. The results show the following: (1) the temperature field of the steep-slope subgrade is clearly different in lateral terms—after 20 years of operation, the maximum difference in the melting depth between the left shoulder and the subgrade center is 3 m; (2) the maximum melting depth of the gravel subgrade center is 3.85 m, while the maximum difference in the melting depth between the left shoulder and the subgrade center is 2.3 m; (3) the cooling effect of the composite measures is noteworthy, and a −2.2 °C freezing area appears under the subgrade. |
format |
Article in Journal/Newspaper |
author |
Zhe Cheng Zhilong Zhang Guang Liu Ying Wu |
author_facet |
Zhe Cheng Zhilong Zhang Guang Liu Ying Wu |
author_sort |
Zhe Cheng |
title |
Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade |
title_short |
Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade |
title_full |
Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade |
title_fullStr |
Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade |
title_full_unstemmed |
Study on the Effect of Non-Linear Ventilation Pipe Composite Measures on the Slope Permafrost Subgrade |
title_sort |
study on the effect of non-linear ventilation pipe composite measures on the slope permafrost subgrade |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/su15021180 https://doaj.org/article/11e6e28c03a1485abce2c0ad687ffc84 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Sustainability, Vol 15, Iss 1180, p 1180 (2023) |
op_relation |
https://www.mdpi.com/2071-1050/15/2/1180 https://doaj.org/toc/2071-1050 doi:10.3390/su15021180 2071-1050 https://doaj.org/article/11e6e28c03a1485abce2c0ad687ffc84 |
op_doi |
https://doi.org/10.3390/su15021180 |
container_title |
Sustainability |
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15 |
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2 |
container_start_page |
1180 |
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