The Research On The Top Coal Caving And Mining Of Simulation

This paper according to thick seam caving theoretical guidance, combined with actual production experience, caving started main technical parameters of the theory and simulation applied technology. On the current theory of caving coal research and production status of the analysis, the need to address the problem ------ thick seam of top coal caving method and by numerical simulation modeling tools to further determine the caving parameters.On the process of Top coal caving in study, ellipsoid put coal on the theoretical study and analysis, software simulation using UDEC put coal derived a reasonable height, so as to further determine the mining and caving ratio, but also combined occurrence of coal geology element simulation of top coal caving coal seam during the development of fracture cases. On hard coal caving in further studies to verify the 1604 top coal mining face twice during the process of encrypting an extension to the full coal crushing, high recovery, confirmed that the coal trade to achieve high yield and efficient.Software PFC3D using discrete element method to simulate different caving process, combined with theoretical guidance of the advantages and disadvantages of various methods of caving, the final LuTian Coal Mine used to determine the order of a road put coal caving method, which means caving operations convenient. And then set up coal pitch and coal drawing. On through theoretical analysis and simulation of the parameters identified in line with the practical application, confirmed that LuTian Coal Mine equipment type is reasonable. 1604 for the LuTian Coal Mine working face Coal Caving provide the basis for the maximum.Through simulation and actual production show, LuTian Coal Mine top coal caving face in 1604 is good, can run with on-demand, top coal caving line simulation results, its release rate and the top coal mining face rates were 80%. respectively, to achieve a high efficient mining.