The Research Of Coal Seam Water Infusion Numerical Simulation

Coal seam water infusion scope, wetness degree and distributing appearance are the key index which measures the result is good or not, and acts as the important basis that adjusts water infusion parameters. Predicting the wetness radius distributing appearance in the provision of time will be the point of the research of this text.This text uses FLUENT and FLAC3D respectively in the wetness radius of water infusion numerical simulation. At the same time, basing on the advantage of FLAC3D in the numerical simulation, this text puts the key research on the FLAC3D. In the process of the simulation, set the density of the coal, porousness of coal, permeate coefficient and natural containing water rate etc. as well as the radius of the water infusion hole and water infusion pressure to the concrete coal seam. In the result of the numerical simulation, it can predict well the wetness radius in the relation with physical appearance of coal seam, water infusion time, radius of the hole of water infusion, and water infusion pressure. So, it let the wetness radius of numerical simulation become true. And, this text also researches the after disposal aspect of FLAC3D. Though programming with its FISH language, make the saturation of coal seam water infusion's wetness radius showing in the software Tecplot become true. After that, draw the conclusion that FLAC3D in the wetness radius numerical simulation can have the dynamic process description, parameters converge fast, has good stability, has several experiments in the locate, and can give some help on the coal seam water infusion parameters selection and the prediction of the water infusion's effect.Meanwhile, aiming at the related factor that influence coal seam infusion does experiments. Mensurate the coal sample's f efficient of Panyi coalmine of three work faces of Huainan, the natural the percent of containing of water, the surface tension of seven surfactants in different concentration and set up Hydrophile property platform of experiment in searching the capillary effect, which giving a complete set of mensurating of Hydrophile property. So it gives experimental data for the wetness radius's numerical simulation and moderates the parameters when adding the surfactant.