Research on key influence factors of end-slope stability for steep end-slope mining in surface coal mine

For increasing the coal recovery quantity and mining more coal under the end-slope in surface mines, based on the detailed geological data, the factors which influence the stability of end slope-slope angle, inclined direction of rock seam and water lever height-is analyzed theoretically, and in terms of FLAC/SLOPE, the analysis model of slope stability is built, and the correlative relationship figure is obtained. The result is shown that the slope angle, the inclined direction of rock seam and water lever height influence evidently to the stability of end-slope and taking some measures can keep stability of the end-slope well and is good for mining coal under end slope.