Recently, rock and gas outburst always happened in coal mines at home and abroad when driving into the deep roadway. The rock and gas outburst includes rock outburst and rock outburst accompanied with gas outburst, which does not occur only in rock excavation, but also in tunnels and other underground engineering construction environment. However, researches about the occurrence conditions and mechanism of rock and gas outburst were not enough to exactly understand the sources and transformation processes o...