Research on gas outburst proneness evaluation of coal geological exploration boreholes

Based on the grey relational analysis method and fuzzy comprehensive evaluation theory, according to considering factors comprehensively such as coal structure, gas pressure and content, geological structure, burial depth of coal-bed and coal thickness, the gas outburst proneness evaluation model of exploration drilling was established with gas data of exploration boreholes in this paper.It used this model to evaluate the gas outburst proneness in the coal seams in Songzao mining area.The result shows that the evaluation result of the model is reliable, which is in accordance with mining reality. The model avoids the deficiency of gas outburst proneness evaluation according to single index or simple comprehensive index in previous exploration stage, as a consequence, making the index much more comprehensive and the result more reliable.