Grouting Reinforcement Technology for Crushed Surrounding Rock Roadway

For partition characteristics of crushed surrounding rock, we proposed hierarchical, sub-regional level grouting method, improved grouting process of inorganic grouting material, used two kinds of inorganic grouting material. A kind of single fluid of superfine cement based on grouting material mainly solves the problem of deep roadway grouting; the other is fast setting hole sealing material which divides the superfine cement based material into A and B, the combination can rapid be solidified, can be used as grouting hole sealing, roadway has good resistance after grouting reinforcement during mining period.