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近年来,在西德和其他国家加强了联合掘进机的发展工作,同时对多年来的经验也给予了相当的注意。联合掘进机的研究成果及其使用经验,两年前和更早以前曾在西德《Gluckauf》杂志上报导过。方向性的样机及其主要技术特性列于表1中。跟过去一样,主要的任务是研究高效能的掘进机械的各种工作机构。特别困难的是,在掘进穿过岩层的石门时,岩层可能是比较软的泥质页岩,也可能是很坚硬的砂岩
In recent years, the development of joint roadheaders has been strengthened in West Germany and other countries, and considerable attention has been given to years of experience. The research results and experience of the joint roadheader were reported two years ago and earlier in the Gluckauf magazine in West Germany. The directional prototype and its main technical features are listed in Table 1. As in the past, the main task was to study the various working mechanisms of high-efficiency boring machines. Particularly difficult is that when digging through rock gates, the rock formations may be soft muddy shales or very hard sandstones.