采空区冒落松散岩体中的成巷方法研究与应用

玲珑金矿大开头矿区主运输平巷承担着矿石运输的重要任务，须穿过近20 m宽的冒落采空区，此段巷道上有破碎冒顶，下有深部坍塌，左右岩移量大。矿山曾采用国内外常规成巷方法给予重新成巷与支护，但均以失败告终，矿山生产受到严重影响。针对矿山采空区冒落松散岩体的特性，结合玲珑金矿大开头255平巷的实际情况，独创了一种顶板插板支护配合两帮U型钢拱架插杆支护的帮顶扩张式联合支护的一次成巷方法，对塌陷底板进行了清理充填处理，对冒落的岩石进行了掘进和清理，对顶板和两帮进行了一体化有效支护，该方法有效解决了冒落松散岩体等恶劣介质中的成巷与支护难题，确保了矿山的生产能力，而且加快了矿石运输速度，取得了良好的经济效益。

Research and Application of Drifting and Supporting in Caving Goaf

Linglong gold mine Dakaitou 255 haulageway undertake the important task of ore transportation, which has to pass through almost 20 m wide caving goaf with broken roof,deep collapse and working slope moving around.Linglong gold mine has used many conventional methods to drifting and support this haulageway but ended in a failure,then mine production was seriously reduced.Considering the mine goaf caving characteristics of loose rock and the actual situation of 255 haulageway,we introduce a creative method of combines roof plug board supporting with two side U-shaped steel arch inserted rod supporting,the collapsed floor was filled with rubble stone,the caving rock was excavated and cleaned,working slope and roof were supported effectively.The method not only solves the drifting and supporting problem in fallen and loose rock, makes sure the mine’s production capacity,but also accelerates the speed of ore transportation, achieved good economic and social benefit.