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Research and Application of the Local Differential Freezing Technology in Deep Alluvium
Joint Authors
Yao, Zhishu
Rong, Chuanxin
Cheng, Hua
Wang, Bin
Cai, Haibing
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-22
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Aiming at the complicated engineering conditions of the auxiliary shaft repair in the Banji coal mine, it was proposed to seal the water around the shaft lining by differential control freezing technology using double rows of holes.
The outer row of holes is completely frozen, and the inner row of holes is local differential frozen according to the degree of destruction of the shaft lining.
The local differential freezing pipe was successfully developed according to engineering requirements.
Numeral simulations were used to predict the development of the freezing temperature field; the results showed that the inward expansion range of the frozen wall formed by the inner row freezing holes was effectively limited and the temperature drop rate of the shaft lining was significantly reduced after the local differential freezing technique was adopted.
The on-site monitoring data showed that the temperature of the limited freezing layer was about 5°C higher than that of the conventional freezing layer.
During the drainage work and the construction of the new shaft lining, the thickness and average temperature of the frozen wall remained stable, indicating that the implementation of the local differential freezing technology achieved the expected results.
Further analysis showed that when the temperature of the limited freezing part of freezing pipes in the inner row was controlled within the range of −15 to −10°C, not only could the frozen wall reach the design thickness and strength but the frost heaving pressure on the existing shaft lining could be effectively eliminated.
American Psychological Association (APA)
Wang, Bin& Rong, Chuanxin& Cheng, Hua& Yao, Zhishu& Cai, Haibing. 2020. Research and Application of the Local Differential Freezing Technology in Deep Alluvium. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1125830
Modern Language Association (MLA)
Wang, Bin…[et al.]. Research and Application of the Local Differential Freezing Technology in Deep Alluvium. Advances in Civil Engineering No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1125830
American Medical Association (AMA)
Wang, Bin& Rong, Chuanxin& Cheng, Hua& Yao, Zhishu& Cai, Haibing. Research and Application of the Local Differential Freezing Technology in Deep Alluvium. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1125830
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125830