荥巩煤田层间滑动断层对煤层的影响

Influence of Interlayer Gliding Fault on Coal Seam in Xinggong Coalfield

由于含煤地层的成层性和煤层的生、储气性能以及软弱性特征,层间滑动断层是煤田中普遍存在的一种构造样式。层间滑动可引起煤层流变,构造煤是脆性变形体制下层滑引起的煤层流变最显著的特征之一。论述了荥巩煤田层间滑动断层对煤层、煤厚、煤岩和瓦斯等的影响,在层间滑动作用下,煤层流变造成了构造煤的发育和煤层形态、厚度的剧烈变化,也是导致煤层瓦斯突出的主因。

Due to the layered property of coal-bearing strata,the generation and reservoir of gas and the limpness characteristics of coal seam,the interlayer-gliding fault was an ubiquitous tectonic style in coalfield. The coal seam rheology can be caused by interlayer-gliding,the tectonic coal formed in the brittle deformation system was one of the most striking characteristics of the coal seam rheology caused by layer slip. The influences of the interlayer-rheology of Xinggong coalfield on coal seam,coal thickness and gas in Xinggong were discussed in this paper. Under the action of interlayer-gliding,the coal seam rheology leaded to the tectonic coal development and the large amplitude variations of coal seam form and thickness,and it also was the main cause of gas outburst.