高应力三软煤层小煤柱沿空掘巷强化支护探索

Research on strengthening support of gob-side entry driving with small coal pillars in three-soft seam with high stress

针对高应力三软煤层小煤柱沿空掘巷底臌和两帮收敛变形的难题,平煤股份六矿根据沿空掘巷工作面的地质条件,按照"强顶固帮、控制底脚"的支护理念,通过强化顶板及小煤柱支护,加大底板支护控制,使巷道两帮收敛变形及底臌量得到了很好的控制。

In order to solve the problem of the floor bulge and sides convergence detormatlon in gob-side entry driving with small coal pillars in three-soft seam with high stress, according to the geological conditions of working face in gob-side entry driving, the 6tb Mine of Pingdingshan Tian＇an Coal Mining Co. Ltd. , follows the support concept of ＂strengthening the roof and sides, controlling the floor bulge＂ to reinforce the roof and small coal pillar supports and increase the floor support control, which result in good control of roadway sides convergence deformation and floor bulge.