上覆倾向煤柱宽度对压架灾害的影响研究

Influence of Upper Inclined Coal Pillar Width on Support Crushing in Coal Mining

以大柳塔矿22103工作面开采压架灾害为工程研究背景,通过设置5种不同宽度的上覆煤柱,采用理论分析和数值模拟的方法,分析对比工作面煤壁内应力状态,得出上覆煤柱宽度对开采压架的影响规律及工作面过上覆煤柱过程中的煤壁应力变化规律,提出合理的防治措施。

Based on the support crushing of 22103 working face in Daliuta coal mine, through setting up 5 kind of different width of upper coal pillar, it can analyse the internal stress state of coal mining face with the theory analysis and numerical simulation. By doing that, can conclude that the influence of upper coal pillar width on support crushing in the coal mining and the law of the internal stress in working face, propose the reasonable preventing and controlling measure to avoid the support crushing.