Research On Law Of Erosion Of Coal And Rock By Pore Gas And Eme Effect In Coal And Rock

This paper obtains the deformation character of the coal rock in the process of gas adsorption and desorption by the experimental research, and theoretically analysis the erosion mechanism of the pore gas to the coal rock based on the cohesion unit model in elastic-plastic fracture mechanics and the experimental results. Also quantitatively analysis the corrosion damage of the coal gas through determining the variation character of the wave speed of the elastic wave. In the meantime, experimentally study the mechanical character of the coal rock under the uniaxial compression damage and its electromagnetic radiation using the moulded coal and the raw coal as the study object. The damage character of the coal rock with gas under different gas pressure and the signal character of the electromagnetic radiation has obtained, the effect of the gas to the peak intensity and the elastic modulus has been analysed. And the secant modulus of the coal rock in the uniaxial compression damage under the effect of the pore gas has been establish, the electromagnetism theory of which has also been perfected. What’s more, the model has also been verified through the numerical calculation and the experimental result. Based on the research results aboved, the field test to the monitoring technology of the of the coal dynamic disaster has been conducted, and mastering the feature distribution of the electromagnetic radiation parametric under different condition. The paper research provides theoretical base to the application of the electromagnetic radiation monitoring technology of the coal and gas bursting, and it is also vital important to the prediction and prevention of coal dynamic disaster.