The Influence of Gas Transmit Fracture in Overburden to the Gas Emission Rules of Adjacent Layer

The growth of gas transmit fracture in overburden affect directly the dynamic storage and emission laws of gas in adjacent layer in the process of rupturing the rock.Based on the formation mechanism and extension laws of air transmit fracture in overburden,this paper studied the development laws of gas transmit fracture in Shigang 15101 caving face of Yangquan Coal Group and calculated the growth height of gas transmit fracture under normal production conditions.Combined with measured gas emission data of caving face,the paper studied the dynamic coupling relationship between gas transmit fracture growth and gas emission of adjacent layer under the influence of mining and provided the selection and optimization for gas extraction and management technology in the coal seam and the adjacent layer.