Experimental Study on Strength, Acoustic Emission, and Energy Dissipation of Coal under Naturally and Forcedly Saturated Conditions
Joint Authors
Wang, Shen
Li, Huamin
Wang, Wen
Li, Dongyin
Yang, Weijie
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-30
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Coal seam water injection (CSWI) is an effective technology that is widely used for preventing rock burst in coal mines.
To deepen the understanding of the mechanism of CSWI to prevent rock burst, new equipment was designed to prepare forcedly saturated coal samples in this study and a series of mechanical experiments was conducted to investigate the mechanical properties, acoustic emission (AE), and energy dissipation characteristics of the coal samples in natural, naturally saturated, and forcedly saturated states.
The experimental results show that the forced saturation treatment can significantly improve P-wave velocity and water content of coal samples, as water can penetrate more into micropores and fractures.
The forced saturation method also significantly promotes the deformation capacity of the coal sample and reduces the strength by 83.37%.
The main reason of the bearing capacity decrease for the forcedly saturated coal samples is plastic yielding rather than brittle crack propagation and slip.
The derivative of the volumetric dissipation energy was proposed to evaluate the outburst proneness.
The forced saturation method significantly reduces the risk of sudden release of energy and is more effective in preventing rock burst in coal seams than the natural saturation method.
American Psychological Association (APA)
Wang, Shen& Li, Huamin& Wang, Wen& Li, Dongyin& Yang, Weijie. 2018. Experimental Study on Strength, Acoustic Emission, and Energy Dissipation of Coal under Naturally and Forcedly Saturated Conditions. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1115318
Modern Language Association (MLA)
Wang, Shen…[et al.]. Experimental Study on Strength, Acoustic Emission, and Energy Dissipation of Coal under Naturally and Forcedly Saturated Conditions. Advances in Civil Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1115318
American Medical Association (AMA)
Wang, Shen& Li, Huamin& Wang, Wen& Li, Dongyin& Yang, Weijie. Experimental Study on Strength, Acoustic Emission, and Energy Dissipation of Coal under Naturally and Forcedly Saturated Conditions. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1115318
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115318