Quantitative Relationship Between Gas Content and Burial Depth of Coal Seam

In order to study the relationship between gas content and coal seam buried depth and accurately predict the gas content of high gas and outburst coal, the method of theoretical derivation and field trials are used to analyze the relationship between gas content and coal seam buried depth. The theoretical analysis results show that gas content gradually increased with the increase of coal seam buried depth. The field test results show that the gas content takes a upward trend with the increase of burial depth of coal seam below the gas weathered zone. However, with the increase of coal burial depth, gas content increase speed is decreasing, and gas content reaches a certain value when burial depth closes to a fixed value. It can be drawn from the seam buried depth within a certain range, a positive correlation is presented between the gas content and coal seam buried depth. The coefficient in proportion would gradually reduce with the burial depth, then the gas content remained unchanged.