关键词: 陡帮开采, 露天矿, 端帮, 稳定性, 时效边坡理论

Abstract: In order to explore the prospect of steep mining technology in Haerwusu Surface Mine, reasonable comparisons in both economy and technique has been performed. Besides, the social and economical meaning that steep mining technology is adopted in this mine is revealed according to the timeliness slope theory. At the same time, the exposed area and exposure time are calculated with the working parameters. With the help of limit equilibrium and finite element analysis, the stabilities of typical profiles in the southern end slope are obtained through FLAC and GEO-slope simulation. The result illustrates that, with the application of the third program, the surface mine can gain 0.89 million tons of residual coal and create the economical benefit of 204.7 million through limiting the width of bench on Level 1025m to15m.