Study On Grouting Reinforcement Program Of The Gateway In Chang Ping Mine

The dynamic pressure tunnels are a type of roadways by the impact of mining in mineengineering.By the mining influence, surrounding rock appears a large deformation, and evengenerate rib spalling, floor heave. Gateway is so intense that difficult to maintain the stability ofthe roadway. Therefore its stability is essential to maintain mines safety and efficientproduction.People have done a lot of research in repairing and reinforcing the dynamic pressuretunnel, and has made certain achievements, but it is rarely studied for dynamic pressure mininggateway in the specific conditions grouting reinforcement.Therefore,identification for its reinforced form and reinforcement parameters undoubtedly has a certain theoreticalsignificance and practical value.The paper has viewd Chang Ping mine in Jin Cheng as a research background, used methodof combining theoretical analysis, field observations and numerical simulation to study ondeformation characteristics, the failure mechanism and factors influencing the stability,determined the gateway in Chang Ping mine reinforcement program and the design of concretereinforcement parameters by testing Physical and mechanical parameters of coal and rock,rockloose circle and basing on the surrounding rock control theory and grouting reinforcementmechanism. preliminarily verified the reinforcing program’s feasibility by numerical simulation,and to formulated a monitoring construction program, so that further could evaluate thereinforcement program and the rationality of reinforcement parameters by industrial test and itsmonitoring data.