Discussion on the Mechanism of Coal and Gas Outburst Prevention and Control by the Coal Seam Water Injection

Coal seam waterflooding hydraulic wetting has been widely used in coal mines, and plays an increasingly important role in coal and gas outburst prevention, dust prevention, and rock burst prevention. In order to explore the mechanism of coal and gas outburst prevention and control by hydraulic wetti...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-07, Vol.252 (5), p.52090
Main Authors: Zhang, Jufeng, Wang, Riyun, Yang, Fengfeng, Lei, Wulin, Feng, Biyang, Zheng, Chao, Zhang, Jianjiang, Miao, Zaiquan
Format: Article
Language:English
Subjects:
Coal
Coal gas outbursts
Coal mines
Coal mining
Gibbs free energy
Hydraulics
Mines
Prevention
Rockbursts
Water injection
Wetting
Young's equation
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Summary:Coal seam waterflooding hydraulic wetting has been widely used in coal mines, and plays an increasingly important role in coal and gas outburst prevention, dust prevention, and rock burst prevention. In order to explore the mechanism of coal and gas outburst prevention and control by hydraulic wetting, this paper analyses the three stages of hydraulic wetting through Gibbs function: wetting, soaking and spreading; explains the solution of the three stages through Young's equation, and finally discusses the release and stress of coal gas potential caused by water movement in coal. The centralized influence provides a theoretical basis for the application of coal and gas outburst prevention and control technology in mines.
ISSN:1755-1307
1755-1315
1755-1315
DOI:10.1088/1755-1315/252/5/052090