Research and Practice on Floor Heave Control of 10208 Gas Control Roadway in Yuanxiang Coal Mine
In view of the problem that the floor heave of 10208 gas control roadway was serious and the section was reduced,which cannot meet the ventilation requirements of the working face,the causes and influencing factors of the floor heave of the roadway were analyzed.Considering the roof,two walls and floor of roadway as a whole,the grouting reinforcement technology of floor was carried out,and the supporting parameters were optimized.Field practice shows that the technology can effectively control the floor heave of roadway floor,reduce the deformation of surrounding rock,ensure the requirements of ventilation section,save the cost of roadway repair,ensure the successful completion of mining of 10208 working face,and obtain good economic and social benefits,which has certain reference value for the treatment of surrounding rock in other working faces of the mine.