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The Determination of a Damage Model for Mudstone under Uniaxial Loading in Acidic Conditions
Joint Authors
Khan, Naseer Muhammad
Cao, K.
Ma, L.
(Sam) Spearing, A. J. S.
Wu, Y.
Xie, Y.
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-08
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The influence of acid solutions was investigated on the mechanical properties of mudstone.
Uniaxial compression tests on mudstone samples were conducted to determine the variations of relative mass, porosity, deformation, and strength characteristics of mudstone subjected to acidic solutions with different pH values.
The change of pH, relative mass, and porosity of mudstone in the process of acid solution immersion was monitored during soaking.
The mechanism of hydrochemical corrosion of mudstone samples was preliminarily discussed.
The damage parameter was introduced based on the porosity rate.
The results show that with increased solution acidity, the peak stress and elastic modulus decreased to different levels, while the peak strain increases in the rock samples.
The increased chemical damage parameters reduce the mechanical parameters and increased the deformation parameters.
On the basis of the mechanical test, considering the stress-strain relationship of rock in the compaction stage, a segmented damage constitutive model of rock based on chemical damage parameters is established, and the test results are verified.
The results show that the correlation coefficient between the theoretical curve and the experimental data is as high as 0.98, and the model is suitable for the analysis of chemically corroded rock under the uniaxial compression test.
The results provide a reference for the analysis and design of coal-bed methane wells where the rocks frequently become acidic during the production of methane.
American Psychological Association (APA)
Cao, K.& Ma, L.& Wu, Y.& (Sam) Spearing, A. J. S.& Khan, Naseer Muhammad& Xie, Y.. 2020. The Determination of a Damage Model for Mudstone under Uniaxial Loading in Acidic Conditions. Geofluids،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1166341
Modern Language Association (MLA)
Cao, K.…[et al.]. The Determination of a Damage Model for Mudstone under Uniaxial Loading in Acidic Conditions. Geofluids No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1166341
American Medical Association (AMA)
Cao, K.& Ma, L.& Wu, Y.& (Sam) Spearing, A. J. S.& Khan, Naseer Muhammad& Xie, Y.. The Determination of a Damage Model for Mudstone under Uniaxial Loading in Acidic Conditions. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1166341
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166341