Research on the position of gas single hole drainage borehole based on Lattice Boltzmann Method

Abstract

Gas has been a serious threat to the safety of coal mine production, especially in high gas and gas outburst mines. As the most effective way to avoid safety accidents caused by gas outburst, the location of boreholes in the process of gas drainage is particularly important to determine the effect of gas drainage. Based on the perfect LBM gas seepage model and using MATLAB to process the simulation data, this paper completes the pressure, gas flow track and gas flow velocity vector diagram of the gas flow area under various simulation conditions. Under the condition that the depth of gas drainage hole is invariable, the influence of different hole position on gas seepage field is analyzed in turn, and the influence of different hole position on gas drainage effect is summarized. The conclusion is very instructive to the selection of borehole location for gas drainage in fractured coal.