一、无轨工艺的发展情况近三十年来,许多地下采矿工程都引用了新技术,这些新技术往往根据岩石的物理特性和力学特性,根据矿床条件而具有不同的特点。在硬煤开采工程中,全面采矿法所用的采矿机和在盐矿采矿工程中房式采矿法所用的掘进机都已作为新技术引用了。而在硬度较高的金属矿开采工程中则相反,不得 First, the development of trackless technology Nearly three decades, many underground mining projects have cited new technologies, these new technologies are often based on rock physical and mechanical properties, according to the conditions of the deposit has different characteristics. In the hard coal mining project, the mining machines used in the Comprehensive Mining Law and the roadheaders used in the chamber mining method in salt mining projects have all been cited as new technologies. In the higher hardness of the metal mining project on the contrary, not