Coal and gas outbursts, as a kind of disasters generally found in highly gassy mines around the world, have significantly influenced safe, efficient production of mines. By using sodium humate as the cementing agent to prepare the briquettes, this study physically simulated the process of coal and gas outburst using a self-made equipment. In addition, orthogonal experiments were carried out to analyze the main factors influencing outbursts. Results showed that no outbursts occurred before the gas pressure reached 0.75 MPa. When the gas pressure and crustal stress were equal to 1.0 MPa and 20 MPa, separately, coal and gas outbursts occured with an intensity being 26.7 kg-m and farthest distance of 14.1 m. Moreover, it was found that the energy in the outburst process continuously attenuated. Acoording to the orthogonal test, gas pressure is the primary factor controlling coal and gas outburst process. When the water content in coal grew to 4 , the outburst intensity rapidly reduced, indicating that increasing the content of water in coal is conducive to controlling outburst disasters.
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