Research On Gas-geological Rules And Outburst Regional Prediction In Changhong Mine

Coal and gas outburst is the synthesize result of stress,gas,coal physics mechanics etc. Moreover it was found that where coal and gas outburst controlled by geological factors occur have the characteristic of regional distribution,so outburst regional prediction must be based on gas-geology.According to statistical analysis of the gas-geology data during geological exploration and basal parameters measured ofâ…¡1 coal seam in Changhong Mine,the author found the coalbed gas reserve characteristic and gas-geology rules in the region to be studied by using gas-geology research methods. On the basis of gas-geology rules in Changhong Mine,found several main gas-geology factors which have effect on coalbed gas content ofâ…¡1 coal seam,such as coalbed burial depth,seam thickness,geologic structure,seam thickness variation. According to theory of quantificationâ… ,make those gas-geology factors which have effect on coalbed gas content quantitative,and then establish mathematical predict model ofâ…¡1 coalbed gas content in Changhong Mine.By using Eviews5.0,slove the mathematical predict model,and have a prediction ofâ…¡1 coalbed gas content in Changhong Mine.After back to the generation of test and accuracy assessment,prove that to predict coalbed gas content according to theory of quantificationâ… is feasible. Under the research on coal and gas outburst mechanism ofâ…¡1 coal seam in Changhong Mine,found prediction index and critical value for coal and gas outburst area,at final coal and gas outburst area is partitioned in Changhong Mine.