大采高工作面煤柱留设宽度影响因素研究

Influencing Factors of Coal Pillar Width in Large-mining-height Working Face

以大采高煤柱的留设宽度为研究对象,在回采巷道应力分析的基础上,对采空区侧塑性区宽度,巷道侧塑性区宽度与弹性区宽度进行研究,确定了煤柱合理的设计宽度,并找出了影响煤柱留设宽度的因素,为大采高工作面的实际生产设计提供了借鉴。

Taking the coal pillar width in large-mining-height working face as the research ob- ject, based on the stress analysis of mining roadways, the width of plastic zone of goal and plas- tic-elastic zone of. roadways are studied to determine reasonable width of coal pillar. Besides, the influence factors of the width are proposed, which is of significance to guide the production in the large-mining-height mines.