袁家村露天铁矿基建剥离工程优化研究

袁家村露天铁矿设计年产2 200万t铁矿石。前期开采为山坡露天，后转为深凹露天矿，设计服务年限为38 a（不含基建时间），矿山基建期3 a，第4 a投产，第5 a达产，稳产34 a。剥采比为2.9 t/t。前期山坡露天基建面临工作面小且少，新水平准备慢，设备效率不能充分发挥，破碎站场地提前准备等问题。同时，也要尽量缩短基建期和正常生产期的过渡时间，做好大小设备的过渡衔接。因此，对基建计划，尤其是新水平准备与基建期和正常生产期的过渡进行优化，保证了基建期的顺利进行，以便在正常生产第1 a达到设计生产能力。

Optimization Research of Stripping Engineering in Capital Construction of Yuanjiacun Open Pit Iron Mine

Yuanjiacun Iron Open-pit Mine owns the design production capacity of 22 Mt per year.It is hillside stripping open pit at first phase, and subsequently converted to deep open pit.The design service life is 38 a (excluding construction period, 3 a).The mine is put into production at the fourth year, reaches the production capacity at the fifth year with the stable production period of 34 a and the stripping ratio of 2.9 t/t.During the construction period, some difficulties exist in capital construction of the hillside stripping, such as, narrow and small working face, inadequate new level preparation, low equipment efficiency, and the advance preparation of crushing station etc..Meantime, it is also with great significance to shorten the period from the capital construction to the regular production and make the transition of small-sized excavator and large-sized electric shovel smooth and stable.Therefore, this paper focuses on the optimization of the capital construction plan, especially the new level preparation and the transition from capital construction to the stable production.These ensure the capital construction smoothly, and make Yuanjiacun open pit reach the design capacity at the first year of stable production.