蔚州矿区单侯矿近距离煤层群区段煤柱留设技术

Segment Coal Pillar Retaining Technology of Close Distance Coal Seam Group in Danhou Coal Mine of Weizhou Mining Area

蔚州矿区单侯矿主采5#、6#煤层,两煤层平均间距24 m,属于近距离煤层群开采。以单侯矿6205N工作面回风巷煤柱、5#煤预留设煤柱稳定性和采空区侧向矿山压力分布为研究对象,掌握6#煤区段煤柱应力分布规律,提出近距离5#煤层区段煤柱宽度留设方案。

The main mining 5# and 6# coal seams of Danhou Coal Mine in Yuzhou Ming Area, the average spacing of them was 24 m, belonged to close distanee coal seam group mining. The coal pillar of 6205N working face return airway, coal pillar stability of 5# pre - retaining, lateral pressure distribution of gob in Danhou Coal Mine were taken as research object,the segment coal pillar stress distribu- tion of 6# coal was mastered, and the segment coal pillar width retaining scheme of close distance 5# coal seam was proposed.