Water Damage Prevention and Control Technology in Fracture Zone Reinforced by Ground Grouting
Based on the engineering background of 22601 working face of Changchunxing Coal Mine,this paper studied how to prevent the water accumulation in goaf of 5214 working face of Wujiagou Coal Mine from fault activation during the mining process of 22601 working face through the theoretical analysis of grouting reinforcement mechanism of fault fracture zone.It was found that the slurry played two important roles within the surrounding rock,forming a mesh skeleton and providing support for the surrounding rock;the slurry filled the cracks and reinforced them behind the crack walls.Therefore,the mechanism of grouting reinforcement and the relationship between grouting pressure and diffusion radius in the process of grouting reinforcement were analyzed,and the rational grouting design scheme was studied.In engineering practice,the results before and after grouting were compared through drilling and geophysical inspection.The results showed that grouting reinforcement effect was obvious in the review area,which proved that the design of grouting reinforcement fracture zone can meet the needs of efficient and safe production in the coal mine.
goafgrouting reinforcementwater damage controlwater conducting fracture zone
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