大倾角双斜工作面俯采段矿压显现规律研究

E1108 coal face in Xinji No.2 mine is a down-dip & up-dip mining coal face at deep dip angle. The biggest inclination angle, depression angle and elevation angle of the coal face come to 45° 36°and 25°respectively. This paper creatively applied MATLAB software to the analysis of strata behavior pattern. It studied the strata behavior in the phase of down-dip mining and its relevance with the depression angle. It found out that the strata behavior showed some special patterns in the phase of down-dip mining: the periodic weighting length was relatively long, the support resistance took on two different distribution characteristics, the support resistance reduced remarkably along with the increase of the depression angle and so on. The paper provided scientific basis for good safety and efficiency of this kind of coal face.