Study On Optimization Of Mining Program In Huolinhe South Open Pit Coal Mine

The open-pit mine is an important energy production base in China,and the optimization of the mining program of the mine is bound to bring about the improvement of the economic benefits of the mine.In this thesis,the slope stability of Huolin River mining area is simulated by taking Huolinhe nan open-pit mine as the research object,combining the open-pit mining technology,limit equilibrium method,numerical simulation and other means and methods through the investigation of the local geological situation,The 5-year mine development plan has been determined and the layout and location optimization of commercial coal loading stations has been completed.The main conclusions are as follows:(1)According to the occurrence of coal seams in Huolinhe No.1 Open pit Coal Mine,the advantages and disadvantages of horizontal and vertical mining are compared and analyzed.In view of different coal seam dip angles,the corresponding bench division method,exposed coal method and mining method are proposed.The inclined layered exposed coal method can be used in areas with dip angles below 3°during horizontal mining.On the basis of considering the development of waste dump and the optimization of transportation system,a five-year plan for the mine was formulated.(2)The parameters of the waste dump in the south open pit mine are determined.The waste bench is divided horizontally and pushed in parallel.Three layout schemes of lower bench development and transportation system are proposed.After comparison and selection,the layout mode of single bridge in the middle is clarified,the flow optimization model of soil and rock flow direction is constructed,and a5-year disposal scheme is proposed,which finally verifies the traffic density.(3)The dumping parameters of the open pit mine are determined,and the stability of the west and south steep slope mining slopes in the south area are analyzed respectively.According to the actual data,the mining angle of the steep slope is designed,and the local steep slope scheme of 25 ° slope is proposed,and the reasonable inner dumping angle of the dump is determined.This thesis has 62 maps,56 tables and 60 references.