Intelligent Pressure Regulating Control System for Pumping and Filling High Concentration Ultrafine Tailing
Due to the advantages of high utilisation rate of tailing sand and low water secretion rate of slurry,high concentration tailing sand filling has been rapidly promoted and applied in the field of mine filling in China.In view of the problems of pipeline blockage and even pipe burst during the conveying process of high-concentration slurry,an intelligent pressure control system for pumping and filling was developed by exploring the mechanism of blockage and bursting of filling pipeline,and analysing the change of pipeline pressure and control mode.Based on the long and short-term memory network(LSTM)and PID control principle,the clogging prediction model was established and the joint control scheme was designed,and the control system visualisation software was developed.Filling experiments were carried out using the self-developed pipe conveying circulation device,and the experimental results showed that when 70％of the concentration of iron ore superfine tailings was used for pumping and filling,the clogging probability predicted by the pumping and filling intelligent pressure control system could be up to 80.2％,and the joint control scheme could automatically adopt different pressure regulating modes to prevent the clogging and bursting of the filling pipe.It provides a new idea and method for intelligent filling in mines.
intelligent pressure regulationcontrol softwarepumping fillingblockage prevention and control
NETL
NSTL
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