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Model Test Study on Natural Thawing Temperature Field of Artificial Ground Frozen Wall

Author

Listed:
  • Haibing Cai

    (School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China)

  • Longfei Yang

    (School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China)

  • Changqiang Pang

    (School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China)

  • Mengkai Li

    (School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China)

  • Chanrui Lu

    (School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China)

  • Rongbao Hong

    (School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
    School of Architectural Engineering, Nantong Vocational University, Nantong 226007, China)

Abstract

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.

Suggested Citation

  • Haibing Cai & Longfei Yang & Changqiang Pang & Mengkai Li & Chanrui Lu & Rongbao Hong, 2023. "Model Test Study on Natural Thawing Temperature Field of Artificial Ground Frozen Wall," Sustainability, MDPI, vol. 15(4), pages 1-17, February.
  • Handle: RePEc:gam:jsusta:v:15:y:2023:i:4:p:3186-:d:1063160
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