Geologic factors analysis of gas inrush of 8# unmined coal seam in Baode Coal Mine
With 8# coal gradually mining to deep area in the 3 Panqu of Baode coal mine,the content of gas is gradually in-creased.In order to solve the problem of safe mining of 8# unmined coal seam in deep area,the geological factors affecting gas occurrence are systematically analyzed.Based on the field measured basic data,the grey correlation method is used.The influential factors(buried depth,coal thickness,metamorphic degree,roof sand mud ratio,floor sand mud ratio,geological structure,erosion condition)are predicted and analyzed,the grey relational model is established,the correlation degree of each factor is calculated,and the main controlling factors of gas occurrence are obtained,The results show that:The main ge-ological factors affecting gas occurrence in 8# coal seam are geological structure and erosion.Multiple regression method is used to establish gas content prediction model equation y=3.242 9+0.004 7x1+0.007 9x2-0.018 0x3+0.001 6x4-0.021 5x5+0.464 1x6+0.200 1x7.The model has a high degree of fitting.
国家科技期刊平台
NSTL
万方数据
维普
