Experimental Study on Gas Pressure Effects on Gas Desorption Characteristic of Coal Seam

Lin Chao Dai; Da Yong Lu; Zhen Liu

doi:10.4028/www.scientific.net/AMM.318.367

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 318Experimental Study on Gas Pressure Effects on Gas...

Experimental Study on Gas Pressure Effects on Gas Desorption Characteristic of Coal Seam

Abstract:

To further explore the impact of gas pressure on gas desorption and flowing law, the gas desorption experimental system designed autonomously is used to carry out studies on gas desorption experiment under different gas pressures. By data fitting, the relationship between gas desorption quantity and time is obtained and also established the model for gas desorption. The results show that: the gas desorption quantity curves is "The first half rises sharply, the latter half segment is gently rising and eventually becomes stabilized", and when the gas adsorption equilibrium pressure is the greater, the gas desorption amount is greater. And the formula can describe the gas desorption law well, the correlation coefficient R2 is above 0.97. The study provides an important theory reference to coal and gas outburst prediction, coal seam gas content prediction and its exploitation and utilization.

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Periodical:

Applied Mechanics and Materials (Volume 318)

Pages:

367-370

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.318.367

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Online since:

May 2013

Authors:

Lin Chao Dai, Da Yong Lu, Zhen Liu

Keywords:

Coal Seam, Gas Desorption, Gas Pressure

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