In view of mining technology modification from shovel - truck to dragline , heidaigou open pit coal mine uses shovels and trucks for combining the original benches with the new bench which meets the requirement of dragline operation 摘要针对黑岱沟露天煤矿的特点、现有开采工艺等,具体研究该矿在扩大生产能力方案实施过程中由单斗铲汽车工艺向吊斗铲倒堆工艺过渡中所存在的问题以及合理的矿山工程衔接方案,以达到吊斗铲开采工艺设计台阶要求。