A Preliminary Study of Gas Bursts

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	A Preliminary Study of Gas Bursts
	Ding YS(丁雁生); Ding YS(丁雁生)
	1985
会议名称	International Symposium on Coal Technology and Science
会议日期	1985
会议地点	China
中文摘要	After showing data describing several of the large bursts in China it is concluded that the driving force of the gas bursts is determined by the internal energy of gas contained in the coal and a large portion of this gas must have come from the coal seam surrounding the cavity.The authors consider the pulverization of the coal as a key factor in analysing the seepage through it.The release of gas from spheric particles of powdered coal is first dealt with and a plane one-dimensional model is studied numerically together with a similarity solution based on further simplifying assumptions.An improved estimate of available energy, taking into consideration pulverization and desorption, is given.Calculated results are in fair agreement with experiments and the estimated flow rate based on similarity solution agree qualitatively with field measurements.It is premised that a criterion related to the minimum amount of coal being thrown out must be fulfilled in an actual burst in addition to the liability indices of the tectonic pressure, gas pressure and the gas release rate.
会议录	Proceedings of the International Symposium on Coal Technology and Science
语种	英语
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46575]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Ding YS,Ding YS. A Preliminary Study of Gas Bursts[C]. 见:International Symposium on Coal Technology and Science. China. 1985.