Study on optimization design of coal filling mining pipeline parameters

Through analyzing current coal mining filling technology, this paper puts forward a new method of optimization design of filling line parameters. Combined with coal mining technical condition one Tangshan mine, the main working parameters in like paste slurry filling pipeline conveying process has identified, such as velocity, the maximum working pressure, dry filling inner diameter, filling pipe wall thickness and other parameters, which achieved good effect on site. It provides technical support for filling technology application on large-scale in our country and realizing mining under buildings and saving cost mining.