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(一)概述 我国有色金属矿山,目前用崩落法开采的产量,大约为1700万吨;铁矿约500万吨;化工及建材约300万吨。合计为2500万吨。 展望2000年,全部有色矿石产量可达2亿吨。其中崩落法产量可达3800万吨。铁矿石产量应达到2.2亿吨,崩落法预计占地下矿产量的60％,则其开采量为1300万吨。全国非煤地下矿崩落法产量可达5600万吨,相当于目前全部非煤地下矿的产量。
(I) Overview of China’s non-ferrous metal mines, the current mining output by caving method, about 17 million tons; about 5 million tons of iron ore; chemical and building materials about 3 million tons. Total 25 million tons. Looking into 2000, all non-ferrous ore production can reach 200 million tons. Including caving method yield up to 38 million tons. Iron ore production should reach 220 million tons, caving method is expected to account for 60% of underground mining, the exploitation of 13 million tons. The output of the national non-coal underground mine caving method can reach 56 million tons, equivalent to the current output of all non-coal underground mines.