The Characters of Gas Distribution and Prediction of Working Face Gas Emission in Jindi Coal Field

According to the field measurement of No.8 and No.13 coal seam gas content in Jindi coal field and the laboratory measuring results of gas component,combining with the geological structure characteristics of Jindi coal field and gas vertical zonation theory,the analyzing result shows that the No.8 and No.13 coal seams of Jindi coal field are located in gas weathering zone.The paper also predicted the gas emission of the working faces in the different production times by using the different-source forecast method.