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我国铝土矿开采自1954年以来,从无到有,得到了很大的发展。1979年的产量大约为1954年的24倍,其中露天采矿量占90％左右。我国露天铝矿开采特点之一是生产剥采比较大,据统计最大的剥采比已达11米~3/米~3,使矿山年剥离量占采剥总量的90％,矿石成本中剥离费用占80％。因此,改革目前电铲-汽车单一剥离工艺,进一步研究新的剥离工艺,以降低剥离费用有着重要的现实意义,同时对于高速度发展露天铝土矿也有深远的意义。
Since 1954, China’s bauxite mining has enjoyed great development from scratch. The output in 1979 was about 24 times that of 1954, of which open-pit mining accounted for about 90%. One of the characteristics of open-pit aluminum mining in our country is that production stripping is relatively large. According to the statistics, the stripping ratio has reached 11 m ~ 3 / m ~ 3, which makes 90% of the total amount of stripping in the mine. Stripping costs accounted for 80%. Therefore, it is of great practical significance to reform the current power shovel-car single stripping process, to further study the new stripping process in order to reduce the stripping costs, meanwhile, to develop the open-air bauxite at a high speed is also of far-reaching significance.