关键词: 主动式超前支护, 注浆锚索, 采动应力, 巷道支护

Abstract: The few people / unmanned mining operation is one of the core goals for sustained high quality development of all kinds of mines in China. The 206 working face of a mine is an irregular working face with varying face width,and the working face auxiliary transport chute originally used hydraulic brackets and monobloc pillars for overrun support. It requires 2 ~ 4 operators,the technical idea of using slurry anchor cable instead of monoblock and hydraulic bracket for active overrun support was proposed for 206 irregular working face,and the key technical parameters of slurry anchor cable support construction were selected by COMSOL finite element program. The results show that the slurry anchor cable over-supporting condition has small deformation of the surrounding rock in the auxiliary transport chute of the working face,the fissures in the surrounding rock have been effectively filled and cemented,and the anchor cable has a stable load bearing. Finally,the slurry anchor cable has completely replaced the mono-pillar and hydraulic bracket,at the same time,the advanced support section is unmanned,which has greatly facilitated the increase and decrease of hydraulic bracket in 206 irregular working face and ensured the safe and efficient production of the working face. The active advanced support technique has a good reference significance for broken roof, abnormal ore pressure area and metal mine roadway support with higher section size requirements.

Key words: active advanced support,grouting cables,mining induced stress,roadway support