An inclined seam analysis of the stability of working face support

Steep working face in inclined direction produce floor damage sliding with the steep inclined working face mining activities. According to the theory of inclined masonry structure, support produce instability under the influence of the tendency of positive pressure state and floor sliding failure action. In order to study this kind of buckling mode, the floor safety factor F is obtained by the method of slope analysis. In the safety factor F<1 case, analysis of working face support in the tendency of positive pressure and sliding instability under the common action instability. Scaffold slippage and consequent dumping two buckling mode. Adopt the method of numerical simulation analysis steep damage sliding floor area,found that stress mainly concentrated in the face of the upper floor, and with the bigger dip Angle, the greater the face slab destruction serious. The result shows that the high incidence area of support instability is the upper face under the influence of the tendency of positive pressure state and floor sliding failure action.