The tectonic coal and its effects on coal and gas outburst

被引：0
|
作者：
Hao, Jisheng [1 ]
Zheng, Jie [2 ]
机构：
[1] Jiaozuo Institute of Technology, Jiaozuo 454000, China
[2] Jiaozuo University, Jiaozuo 454000, China
来源：
Proceedings in Mining Science and Safety Technology | 2002年
关键词：
Desorption - Gas bursts - Mechanical permeability - Porosity - Pressure effects - Textures - Thickness measurement;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Both properties of higher porosity and lower permeability of the tectonic coal make it possible to keep more gas content and holding higher gas pressure. The isolating action and gas-cushion action of the free gas in tectonic coal cut down the resistance of coal-body against outburst. The specific property of high-deformed-extent of tectonic coal makes gas desorption, escape and flowing quickly become possible. The existing of weak-seam or thoroughfare-seam create suitable conditions for the initial erupting and continued developing of coal and gas outburst. On the whole, the existing of tectonic coal with certain thickness is the essential condition of coal and gas outburst, but not the sufficient condition.
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页码：362 / 364
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