论文部分内容阅读
西班牙采矿工业的产值,1970年占全国工业总产值的3％,1974年占2.95％。在1961～1970年中,采矿生产上升一倍;1971～1980年采矿生产将上升4.6倍。有18个重点企业正在扩大,其中12个矿用现代化采矿作业扩建,其余6个将采用新的采矿作业。明那斯矿(Andaluja de minas)在格拉纳达省的矿床,已经探明含铁47％,水分12％的赤铁矿有8000万吨的储量。露天表土剥离用推土机,二条皮带运输机运往废石场。阶段高8米,穿孔直径15.87厘米,用4.35米~3的电铲装载,32吨自卸汽车运输。目前产量是270万吨矿石,1980年将上升到400万吨,每年有2000万吨表土要剥离。
The output value of mining industry in Spain accounted for 3% of the national total industrial output value in 1970 and 2.95% in 1974. From 1961 to 1970, mining production doubled; from 1971 to 1980 mining production will rise 4.6 times. There are 18 key enterprises are expanding, of which 12 mining modernization of mining operations expansion, the remaining six will adopt new mining operations. Andaluja de minas deposits in Granada province have proven 47% ferrous and 12% moisture hematite reserves of 80 million tons. Open-topsoil stripped with bulldozers, two belt conveyors transported to the waste rock field. Stage 8 meters high, perforated diameter of 15.87 cm, with 4.35 m ~ 3 shovel loading, 32 tons of dump truck transport. The current output is 2.7 million tons of ore, which will rise to 4 million tons in 1980 and 20 million tons of topsoil will be stripped each year.