Study on Initial Speed of Methane Emission Computation
To study the initial speed of methane emission computation is very important. It means that the coal which contains gas is completely exposed to the air. The gas from the adsorption state transforms into the free state. The index reflects that the speed o
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Study on Initial Speed of Methane Emission Computation Zhou Zhang and Min Zhou
Abstract To study the initial speed of methane emission computation is very important. It means that the coal which contains gas is completely exposed to the air. The gas from the adsorption state transforms into the free state. The index reflects that the speed of the coal seam gas spread is concerned with the gas of the coal content, pore structure, and surface properties of the pore. State regulations provide that the initial speed of methane emission is an important index for coal seam outburst identification and forecast. However, the test method of the initial speed of methane emission is not perfect. The result is varied because the laboratory and the operating personnel are different. In addition to the above factors, it is concerned with the temperature and radiation pressure. This paper mainly studies the relationship of the initial speed of methane emission with the temperature and radiation pressure and investigates the previous research and experimental methods to determine whether they can be improved with a mathematical formula. Keywords Initial speed of methane emission
Temperature Radiation pressure
61.1 Introduction The initial speed of methane emission means the coal which contains gas completely exposed to environmental conditions, the gas from the adsorption state into the free state of speed. The ability of radiation gas and the occurrence of outburst have a direct relationship [1, 2]. Z. Zhang (&) M. Zhou Henan Polytechnic University, Jiaozuo, China e-mail: [email protected]
Z. Zhong (ed.), Proceedings of the International Conference on Information Engineering and Applications (IEA) 2012, Lecture Notes in Electrical Engineering 218, DOI: 10.1007/978-1-4471-4847-0_61, Ó Springer-Verlag London 2013
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Table 61.1 Outburst of dangers of prediction of individual target Coal seam outburst Damage of Coefficient of Initial speed of methane dangerous coal solid coal emission
Gas pressure
Outburst dangerous
C74 MPa
III, IV, V
C10
B0.5
Currently, our country evaluates coal outburst ability with the initial speed of methane emission, and combines with the coefficient of solid coal f , forms a new composite index K ¼ BP=f . It is widely used in regional prediction, and makes a very good effect. ‘‘Coal And Gas Outburst Mine Identification of Norms’’ (in 2006) and ‘‘Coal And Gas Outburst Prevention Rules’’ (in 2009), the two national level norms show the importance of a single target method in coal and gas outburst dangers of identification and prediction (Table 61.1). State regulations provide that the initial speed of methane emission is one of the important indexes which concern coal seam outburst identification and forecast. Hence, the effect of the BP is not only affirmative, but also of legal significance. However, the test method of the initial speed of methane emission is not perfect. The result is varied because the laboratory and operating personnel are different. This pap
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