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七十年代,国外地下矿山以无轨采矿的普遍推广和液压凿岩的工业应用为标志,进入了一个新的发展阶段,机械化程度和劳动生产率显著提高。进入八十年代以后,在第四次产业革命的推动下,地下采矿设备又有新的重要发展。以广泛应用电子计算机为特点的第四代地下矿山正在形成。一、液压凿岩迅速推广自从1970年法国制成第一台回转冲击式液压凿岩机以来,到八十年代初已有9个国家17个厂家生产各种型号的液压凿岩机48
In the seventies, the underground mines abroad were marked by the widespread promotion of trackless mining and the industrial application of hydraulic rock drilling. The level of mechanization and labor productivity markedly increased. After entering the 1980s, under the impetus of the Fourth Industrial Revolution, underground mining equipment has another important new development. The fourth generation of underground mines, characterized by widespread use of electronic computers, are taking shape. First, the rapid promotion of hydraulic rock drilling Since 1970, France made the first rotary impact hydraulic rock drill since the early 1980s, nine countries have 17 manufacturers of various types of hydraulic rock drill 48