A Gas Pressure Prediction Model of the Excavation Face Based on Gas Emission

Abstract

Gas pressure is one of the important factors related to the occurrence of coal and gas outburst disasters. The accurate gas pressure forecasting is of significance for the prevention and control of a gas disaster. In this work, a gas pressure prediction model based on the sources of gas emissions was established. The verified results show that the predicted gas pressure was roughly consistent with the actual situation. This model could meet the needs of engineering projects. Coal and gas outburst dynamic phenomenon are successfully predicted in an engineering application using the model. Overall, the prediction of coal and gas outburst using the gas pressure model achieves a continuous and dynamic effect. The model can overcome both the static and sampling shortcomings of traditional methods and solve the difficulty of coal and gas outburst prediction at the excavation face. With its broad applicability and potential prospects, the model is of great importance for guiding gas drainage, and the prevention of coal and gas outburst disasters.

Discrimination Method of Gas Pressure Measurement in Coal Seams: Physical Experiment and Model Development

“…Wang et al , measured the gas pressure in a coal seam by establishing a dynamic inversion model of gas pressure. Chen and Liu deduced the prediction equation of gas pressure according to the source of gas emission from the heading face. Wang et al studied the expression of gas flow in spherical and radial flow fields and proposed a method of calculating gas pressure in coal seams.…”