Analysis of the Dynamic Impact Mechanical Characteristics of Prestressed Saturated Fractured Coal and Rock
Joint Authors
Li, Huamin
Wang, Wen
Gong, Shuang
Zhang, Shiwei
Liu, Zhumeng
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-01
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The natural and water-saturated states of coal samples under static and static-dynamic loads were tested using the Split-Hopkinson pressure bar (SHPB) method and RMT-150 system, respectively.
The differences in the strength reduction coefficient and elastic modulus reduction coefficient of water-saturated coal samples under static and static-dynamic loads were discussed.
The experimental results for coal were compared with the corresponding characteristics of typical sandstone samples under static and static-dynamic loads.
Furthermore, a fracture model of a hydrous wing branch fracture under static-dynamic loading was established based on the theory of fracture damage mechanics.
The difference in dynamic strength between coal and sandstone samples for both the natural state and water-saturated state was analyzed.
On this basis, the effect of water on the fracture surface of coal and the tensile strength and shear strength of the branch fracture surface were fully considered.
In addition, criteria of the branch fracture surface for crack initiation and crack arrest were also established.
Finally, the phenomenon of increasing elastic modulus in saturated coal samples was explained with this criterion.
American Psychological Association (APA)
Wang, Wen& Zhang, Shiwei& Li, Huamin& Gong, Shuang& Liu, Zhumeng. 2019. Analysis of the Dynamic Impact Mechanical Characteristics of Prestressed Saturated Fractured Coal and Rock. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1116413
Modern Language Association (MLA)
Wang, Wen…[et al.]. Analysis of the Dynamic Impact Mechanical Characteristics of Prestressed Saturated Fractured Coal and Rock. Advances in Civil Engineering No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1116413
American Medical Association (AMA)
Wang, Wen& Zhang, Shiwei& Li, Huamin& Gong, Shuang& Liu, Zhumeng. Analysis of the Dynamic Impact Mechanical Characteristics of Prestressed Saturated Fractured Coal and Rock. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1116413
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116413