Synergistic Prediction Technology of Coal and Gas Outburst of Far and Near Fields in High-efficiency Mine

In order to alleviate the contradiction between outburst control and production in high-yield and high-efficiency mines, this paper focuses on the primary link of outburst control (outburst prediction), and constructs the far field and near field collaborative prediction technology and prediction model of coal and gas outburst around the time-space evolution relationship of outburst risk. The technical ideas of this paper are as follows: firstly, the gas field, stress field, geological structure field and outburst prevention measure field are established from the perspective of far-field prediction to realize the macro control of mine outburst risk; then the outburst prediction method based on the characteristics of gas and mine pressure monitoring are established from the perspective of near-field prediction to realize the dynamic analysis of the outburst risk of the working face; and finally, through the effective fusion of far-field and near-field prediction, the far-field and near-field collaborative prediction of mine outburst risk is realized.