Determination of critical value of an outburst risk prediction index of working face in a coal roadway based on initial gas emission from a borehole and its application: A case study

This study developed a platform for determination of the predictive index for outbursts by simulating the field working face of coal roadway and a system for determining briquetting pressures of coal briquettes. Taking a predictive index called the 'initial gas emission from a borehole' (IGEB) as an example, this research carried out the test for measuring this index in the laboratory and determined its critical value for outburst risk in the...