Investigation of the Effects of Freeze-Thaw Cycles on Geomechanical and Acoustic Characteristics of Tuff Specimens under Different Stress Paths
Joint Authors
Hu, Nan
Xiao, Yong-gang
Li, Chang-hong
Cao, Jie
Hou, Zhi-qiang
Wang, Yu
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-22
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
In the process of development and construction of open-pit mine slope in the high altitude and cold area, freeze-thaw (F-T) cycles have an important impact on rock engineering structure.
F-T cycles lead to the decrease in physical and mechanical properties of rock, which is closely related to the stability of open-pit slope.
In this paper, the influence of F-T cycles on geomechanical and acoustic emission (AE) characteristics of tuff specimens under different stress paths was studied by using F-T cycle treatment, in situ AE monitoring, and uniaxial loading test.
The results indicated that under the same stress path, the cumulative AE count/energy of rock samples subjected to F-T cycles was less than that of rock samples not subjected to F-T cycles.
The peak frequency distribution of AE signal during the loading process of rock specimen presented the phenomenon of frequency bands.
The width of the low-frequency band of the rock samples subjected to F-T cycles was larger than that of the rock samples under the natural state.
The frequency and width of the high-frequency band of the rock samples subjected to F-T cycles were larger than those of the rock samples under the natural state.
The rock samples subjected to F-T cycles had higher plastic strain than those without F-T cycles.
According to the uniaxial compression test results of F-T rock samples under different stress paths, the peak stress and peak strain have little change, but the AE characteristics were obviously different.
American Psychological Association (APA)
Xiao, Yong-gang& Li, Chang-hong& Cao, Jie& Wang, Yu& Hou, Zhi-qiang& Hu, Nan. 2020. Investigation of the Effects of Freeze-Thaw Cycles on Geomechanical and Acoustic Characteristics of Tuff Specimens under Different Stress Paths. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-20.
https://search.emarefa.net/detail/BIM-1122505
Modern Language Association (MLA)
Xiao, Yong-gang…[et al.]. Investigation of the Effects of Freeze-Thaw Cycles on Geomechanical and Acoustic Characteristics of Tuff Specimens under Different Stress Paths. Advances in Civil Engineering No. 2020 (2020), pp.1-20.
https://search.emarefa.net/detail/BIM-1122505
American Medical Association (AMA)
Xiao, Yong-gang& Li, Chang-hong& Cao, Jie& Wang, Yu& Hou, Zhi-qiang& Hu, Nan. Investigation of the Effects of Freeze-Thaw Cycles on Geomechanical and Acoustic Characteristics of Tuff Specimens under Different Stress Paths. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-20.
https://search.emarefa.net/detail/BIM-1122505
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122505