The Research And Application Of Semi-continuous Of Mining System For Large Open-pit Coal Mine

Opencast mining process takes many forms, including a semi-continuous miningtechnology with its unique economic and environmental advantages are widely used in large-scale opencast production practices. Prepare expansion and new technology for large open pitmine almost all considered first semi-continuous process, showing the process of applicationand prospects are bright. But in the specific practice applications, due to the use of time semi-continuous process applications and other mature technology compared to shorter, and thereforethere are some technical issues have not been thoroughly explored and resolved.Based on the basis of open pit mines in recent years, the latest research results at home andabroad as well as domestic production practices of the open pit mine, analyzed by semi-continuous process and propose solutions to technical problems in the application of the openpit mine. Analysis of the composition of the semi-continuous system, various aspects of theacquisition cost of equipment and semi-continuous system capabilities relations, seen as thepromotion of production, large-scale mining equipment was evident, with the improvement ofthe investment capacity of the equipment unit equipment capacity decreases; According to theproduction practice of Ping shuo East surface mine P&H4100excavator, shovel productioncapacity factors affecting and influencing factors were analyzed, reasonable selection principleproposed mining width; the calculation method by an example in semi-continuous processsystem capability; analysis of semi-continuous system core equipment, to shift from theprinciple of selecting tracked crusher arranged in the form of self-shift analysis crusher practices,according to the principle of selecting different devices due to reprint the formation of differentcombinations reproduced, reprinted unit suitable for combining stairs, bridge combination forreprint single-step operation; combined domestic and international research and analysis of thematerial presented frozen sticky problem solving solutions winter cold area open pit operationsfreeze sticky material issues, to provide a reference for the winter opencast operations.