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Model Test Study on Natural Thawing Temperature Field of Artificial Ground Frozen Wall
In order to visualize the evolution and distribution law of the ground temperature field during artificial freezing construction, an indoor model test study was carried out based on the independently constructed hygrothermal coupling artificial ground freezing test platform. The test results show th...
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Published in: | Sustainability 2023-02, Vol.15 (4), p.3186 |
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creator | Cai, Haibing Yang, Longfei Pang, Changqiang Li, Mengkai Lu, Chanrui Hong, Rongbao |
description | In order to visualize the evolution and distribution law of the ground temperature field during artificial freezing construction, an indoor model test study was carried out based on the independently constructed hygrothermal coupling artificial ground freezing test platform. The test results show that the soil temperature in the freezing process went through the three stages of a steep drop, a slow drop, and stabilization, the earliest closure position of the frozen wall was the intermediate point between two freezing pipes, and the thickness of the frozen wall on different sections showed Section 1 > Section 2 > Section 3 after 61 min of positive freezing. The soil temperature in the natural thawing process went through the four stages of a rapid rise, short hysteresis, a second rapid rise, and a linear slow rise. By fitting the test data, the distribution function of the pipe wall temperature along the pipe length under natural thawing conditions was obtained. The research results can provide a valid basis for the numerical calculation model of a three-dimensional non-uniform natural thawing temperature field and can also provide a reference for the design of settlement grouting under natural thawing conditions. |
doi_str_mv | 10.3390/su15043186 |
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The test results show that the soil temperature in the freezing process went through the three stages of a steep drop, a slow drop, and stabilization, the earliest closure position of the frozen wall was the intermediate point between two freezing pipes, and the thickness of the frozen wall on different sections showed Section 1 > Section 2 > Section 3 after 61 min of positive freezing. The soil temperature in the natural thawing process went through the four stages of a rapid rise, short hysteresis, a second rapid rise, and a linear slow rise. By fitting the test data, the distribution function of the pipe wall temperature along the pipe length under natural thawing conditions was obtained. The research results can provide a valid basis for the numerical calculation model of a three-dimensional non-uniform natural thawing temperature field and can also provide a reference for the design of settlement grouting under natural thawing conditions.</description><identifier>ISSN: 2071-1050</identifier><identifier>EISSN: 2071-1050</identifier><identifier>DOI: 10.3390/su15043186</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Construction ; Design ; Distribution functions ; Earth temperature ; Environmental aspects ; Freezing ; Ground freezing ; Heat conductivity ; Mechanical properties ; Model testing ; Pipes ; Soil freezing tests ; Soil temperature ; Steel pipes ; Sustainability ; Temperature distribution ; Thawing ; Wall temperature ; Walls</subject><ispartof>Sustainability, 2023-02, Vol.15 (4), p.3186</ispartof><rights>COPYRIGHT 2023 MDPI AG</rights><rights>2023 by the authors. Licensee MDPI, Basel, Switzerland. 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The test results show that the soil temperature in the freezing process went through the three stages of a steep drop, a slow drop, and stabilization, the earliest closure position of the frozen wall was the intermediate point between two freezing pipes, and the thickness of the frozen wall on different sections showed Section 1 > Section 2 > Section 3 after 61 min of positive freezing. The soil temperature in the natural thawing process went through the four stages of a rapid rise, short hysteresis, a second rapid rise, and a linear slow rise. By fitting the test data, the distribution function of the pipe wall temperature along the pipe length under natural thawing conditions was obtained. 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subjects | Construction Design Distribution functions Earth temperature Environmental aspects Freezing Ground freezing Heat conductivity Mechanical properties Model testing Pipes Soil freezing tests Soil temperature Steel pipes Sustainability Temperature distribution Thawing Wall temperature Walls |
title | Model Test Study on Natural Thawing Temperature Field of Artificial Ground Frozen Wall |
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