Research On Parameters Of The Extraction Unit Based On The Optimization

of which is affected by many factors like the mine geology, production equipments, mining technology and management level, etc. The layout of the mine production system takes the mining unit division of coal seam within the mine as the prerequisite; the mining unit division is based on the extraction unit. Whether the parameters of the extraction unit is reasonable or not affects whether the mine production system is reasonable or not as well as affects the efficiency, benefit, yield, security of mining as well as the recovery rate of coal resources. It is the most and core issue to realize mining optimization to research the extraction unit parameters with mathematical method. The research result can provide mine engineering and technical personnel with scientific decision-making support, optimal production scheme and parameters so as to increase the recovery rate and yield, enhance security, maximally reduce their investment risk and achieve the purpose of high yield and high efficiency under the conditions of limited known information and certain technology.Taking the issue of optimizing parameters of the extraction unit as the background, according to the effect of extraction unit on evaluation indexes of safety production, optimization model of whic is established; First, through the independent analysis of the extraction unit parameters, one-parameter optimization model of has been established, according to yield, efficiency, ton-coal cost and reliability respectively, quadratic function model, inverted function model, check function model, and polynomial function have been established; Second, for the joint distribution characteristic of the parameters, two-parameter optimization model has been established, according to ton-coal cost, the model has been established. by fractional and polynomial function Third, for two-parameter optimization model is nonlinear unconstrained optimization problem, the model has been solved by adopting the DFP Method, according to the characteristic of which, and the optimization result matches practical case; Last, through Matlab simulation and analysis & evaluation of its result, the correct application of this method in the issue of the extraction unit parameters optimization is validated.