用机械铲向翻斗车装车的全断面挖沟准备工作水平的方法是人所共知的。工作水平也可用位于铁路线路同一标高的两台正铲型机械铲掘沟来准备。这两种方法,都需耗用大量时间入换翻斗车,势必降低电铲和机车的生产率。为了提高生产效率,我们提出了分层掘沟的新水平采准方法,以正铲装车往铁路车辆中装矿岩。这种方法使岩石采掘量、拆卸和铺设枕轨节的工作量增大。也增加了斜层掘岩工程量。为了克服南部采选公司露天矿的上述缺点,我们设计并使用了以环形堑沟准备采掘水平的新方法。总的来看,尽管这个方法有较高的技术经济效益,但却有许多缺点:电铲需要经常处于开拓工程的内侧;铁路线的曲率半径随着堑沟延深而变小;狭窄的作业条 It is well known that the preparation of a full-face trenching machine with a mechanical shovel to the dump truck can be performed. The working level can also be prepared with two shovel-type mechanical shovels at the same level as the railway line. Both of these methods require a lot of time to switch dumper trucks, which will inevitably reduce the productivity of shovels and locomotives. In order to improve the production efficiency, we propose a new level of horizontal trenching method of grading, loading and unloading to the railway vehicles loaded ore rock. This method increases the amount of rock excavation, the workload of disassembling and laying the sleepers. Also increased the amount of oblique rock excavation project. To overcome the above shortcomings of the southern mining company’s opencast mine, we designed and implemented a new method of preparing the level of excavation for the annular trenches. In general, although this method has high technical and economic benefits, it has many shortcomings: the shovel often needs to be on the inside of the pioneering work; the radius of curvature of the railway line becomes smaller as the trenches deepen; the narrow work Article