Knowledge Management System of Institue of Mechanics, CAS
A Preliminary Study of Gas Bursts | |
Cheng CM(郑哲敏); Ding YS(丁雁生) | |
会议录名称 | Proceedings of the International Symposium on Coal Technology and Science |
1985 | |
会议名称 | International Symposium on Coal Technology and Science |
会议日期 | 1985 |
会议地点 | China |
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. |
语种 | 英语 |
文献类型 | 会议论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/46575 |
专题 | 力学所知识产出(1956-2008) |
推荐引用方式 GB/T 7714 | Cheng CM,Ding YS. A Preliminary Study of Gas Bursts[C]Proceedings of the International Symposium on Coal Technology and Science,1985. |
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