To recover the remainder coal in the side slope walls of surface mine by use of underground coalwinningmethod can increase coal recovery rate and mine economic effect.
采用地下台阶式开采法回采露天矿端帮煤可大大提高煤炭资源回收率和矿山经济效益；
2
Rotating coal mining method is optimized in Xinhe Coal Mine. Measures are taken so as to increase coal winning ratio and comparatively good coal winning result is achieved.