交叉巷“人工三角煤柱”施工方法在塔山矿的应用

巷道在掘进过程中对于两条巷道交叉点三角煤柱很难预留,特别是短距离巷道在过两巷交叉点时出现顶板破碎、片帮等现象,造成巷道施工困难,在严重影响掘进速度的同时,也给矿井生产留下很大的安全隐患,针对这一施工难题,大同煤矿集团生产处通过技术研究对两巷交叉点三角煤柱进行预留并对巷道掘进中施工工艺及支护工艺进行变更,实践证明这一施工技术在塔山煤矿三盘区5307运料斜巷取得了较好效果。

Application of Construction Method with Artificial Reserved Triangle Coal Pillar at Roadway Intersection

Aiming at the roadway construction difficulties and tunneling speed lag caused by the reservation problem of triangle coal pillar at two-roadway intersection and roof breaking and rib spalling in crossing the intersection in short-distance roadway,the paper proposes the transformation on construction and support technique with reserved triangle coal pillar at the intersection in roadway tunneling.