Theoretical And Experimental Research For Gas-pulverized Coal Impactive Dynamic Effect After Outburst

Based on the experimental study on the gas-pulverized coal two-phase fluid impact dynamicscharacteristics, based on the theory of elastic mechanics and thermodynamics theory analysis hasbeen prominent after, the external gas pressure on coal pulverization process under the action of"popcorn" effect; Based on the two-phase fluid dynamics analysis of the compressible two-phaseflow pattern of fluid in the roadway; Based on the theory of electricity, the gas desorption adsorptiondesorption process of coal and rock was established capacitance-resistance coupling RC modelassumptions; Through laser schlieren system-pulverized coal to gas two phase fluid impact barrier,machine model, reverse outburst prevention air door, the man model, according to the process flowand pulverized coal after the prominent "sorting" experiments and highlight the dynamicobservation of the process of experiment; Using two phase impact dynamics of impact on theprocess of qualitative analysis; To test and verify the correctness of theoretical analysis andexperimental results, using computational fluid dynamics software migration regularity within theimpact air flow in tunnels and the impact on the machine and the outburst prevention damperdynamic effect is simulated; Finally, we "11.8" gas outburst in coal mine accident has carried on theempirical research. This paper for the coal and gas outburst after the research of the mechanism andeffect of provides the basis of theoretical support, to highlight the work of disaster prevention andmitigation is the display of the significance.