Thermal Expansion of Triaxially Stressed Mudstone at Elevated Temperatures up to 400°C
Joint Authors
Zi-jun, Feng
Zhao, Peng
Qiao, Meng-meng
Dong, Fu-ke
Yang, Dong
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-08
Country of Publication
Egypt
No. of Pages
8
Abstract EN
In order to study the thermal deformation of the rock that surrounds underground engineering projects with elevated temperatures (e.g., underground coal gasification, coal in situ pyrolysis, in situ oil and gas extraction from oil shale, geothermal energy extraction from rock, among others), a servocontrolled machine (model IMT-HTP 100F) was used to examine the thermal expansion of triaxially stressed mudstone at temperature up to 400°C.
Two distinct stages of thermal expansion were found at temperatures up to 400°C: very small thermal expansion below 50°C, followed by almost constant thermal expansion at 50–400°C.
This linear thermal expansion coefficient of triaxially stressed mudstone did not increase in the range 50–400°C.
The effect of the applied triaxial stress was on both close cracks and impeded grain expansion and the swelling of the rock.
Mudstone had a larger linear thermal expansion coefficient than either sandstone or limestone, in that order.
The potential energy theory was used to explain the intrinsic variation of thermal expansion of the different rock types.
American Psychological Association (APA)
Zi-jun, Feng& Qiao, Meng-meng& Dong, Fu-ke& Yang, Dong& Zhao, Peng. 2020. Thermal Expansion of Triaxially Stressed Mudstone at Elevated Temperatures up to 400°C. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1129234
Modern Language Association (MLA)
Zi-jun, Feng…[et al.]. Thermal Expansion of Triaxially Stressed Mudstone at Elevated Temperatures up to 400°C. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1129234
American Medical Association (AMA)
Zi-jun, Feng& Qiao, Meng-meng& Dong, Fu-ke& Yang, Dong& Zhao, Peng. Thermal Expansion of Triaxially Stressed Mudstone at Elevated Temperatures up to 400°C. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1129234
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1129234