Qingdong coal mine 7~# coal seam structure coal distribution laws and its controlling factors

Aimed at identifying the control effect of tectonic coal distribution on coal and gas outburst,this paper identifies the thickness of tectonic coal found in 7# coal seam structure by interpreting borehole logging curve and combined with field investigation and offers contour map of tectonic coal thickness in 7# coal seam structure,developed by using software Surfer 8 and gives an analysis of tectonic coal distribution of 7# coal seam.The results show that tectonic coal in 7# coal seam is found to be generally developed;eastern tectonic zone is better developed,with a greater variation in tectonic coal thickness;central tectonic zone has the stable distribution of tectonic coal thickness;and western tectonic zone is marked by relatively developed syncline core,with the two wings staying relatively smaller.Ida structure distribution is subjected to folding structure,faults and ground stress factors.