CHINA MINE ENGINEERING

Due to geological structures, some underground roadways tend to be fragmented. Such fragmentation gives rise to severe deformation, local damage, and even roof collapse, seriously affecting mining operation. The essay analyzes the causes for fragmented country rock deformation and break, studies the mechanism of grouting consolidation, and proposes a grouting scheme based on site actualities. The field deformation statistics revealed that the grouting consolidation effectively reduced porosity and improved the strength of fragmented country rocks, and brings roadway deformation under control. The practice serves as a good reference for the treatment of roadways of the same nature.